Cisco ISE - Line Card ISE Configuration Manual

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

This feature module describes the software configuration for the Cisco 4-Port ATM Internet Services Engine (ISE) line cards in the Cisco 12000 Series Router. The line card comes in two variations: OC-12c/STM-4c and OC-3c/STM-1; otherwise, the features are the same on both cards.

Feature History for the 4-Port ATM ISE Line Card

Release Modification

12.0(25)S The 4-Port OC-12c/STM-4c ATM ISE line card was introduced.

12.0(26)S2 The 4-Port OC-3c/STM-1 ATM ISE line card was integrated into 12.0(26)S.

12.0(27)S1 The 4-Port OC-3c/STM-1 ATM ISE line card was introduced. AToM, Layer 2/Layer 3 features on a single port and enhanced QoS policing features were introduced.

Contents

Finding Support Information for Platforms and Cisco IOS Software Images

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.

• Prerequisites for the 4-Port ATM ISE Line Card, page 2

• Restrictions for the 4-Port ATM ISE Line Card, page 2

• Information About the 4-Port ATM ISE Line Card, page 3

• How to Perform a Basic Configuration of the 4-Port ATM ISE Line Card, page 5

• How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card, page 8

• How to Configure AToM VCs on the 4-Port ATM ISE Line Card, page 35

• Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card, page 76

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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Prerequisites for the 4-Port ATM ISE Line Card

• Configuring Modular QoS CLI, page 84

• Additional References, page 91

• Command Reference, page 92

• Glossary, page 98

Prerequisites for the 4-Port ATM ISE Line Card

There are no prerequisites for using the 4-port ATM ISE line card.

Restrictions for the 4-Port ATM ISE Line Card

Restrictions and limitations for the 4-Port ATM ISE line cards are listed in Tab l e 1 and Table 2.

Table 1 Supported Values for 4-Port ATM ISE Line Card

Feature Limitation

Maximum number of cell packing or policing VCs

508 per port

Maximum number of active VCs3: Layer 2 Layer 3

Range of VPI5 values

10244 per port and card

2047

per port and card

Varies with vc-per-vp value. In Release 12.0(25)S: up to 255 In Release 12.0(27)S: UNI VPIs—up to 255; NNI VPIs—up to 4095

Range of VCI

1. VC=virtual circuit.

2. Hardware limitation.

3. Subject to overall system limitation and configuration.

4. If cell packing or policing are configured, the remaining 516 available VCs can be configured for cell relay over MPLS or AAL5 over MPLS.

5. VPI=virtual path identifier.

6. VCI=virtual channel identifier.

Table 2 Scalability Limitations for the 4-Port ATM ISE Line Card

values

Varies with vc-per-vp value, up to 65,535

Layer 2

Feature

Limitation

Maximum number of AToM Tunnels per port 1024

Maximum number of AToM Tunnels per line card 1024

Maximum number of AToM Tunnels per router 2048

Maximum number of AToM Tunnels per port with features

508

Maximum number of AToM Tunnels per port with cell packing 508

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Information About the 4-Port ATM ISE Line Card

Table 2 Scalability Limitations for the 4-Port ATM ISE Line Card (continued)

Feature

Maximum number of AToM Tunnels per line card with features

Maximum number of AToM Tunnels per line card with cell packing 1024

1. Includes features such as policing

Information About the 4-Port ATM ISE Line Card

The 4-Port ATM ISE line cards, which deliver line rate OC-12c/STM-4c or OC-3c/STM-1 bandwidth, provide enhanced Layer 2 and Layer 3 capabilities for high-speed customer aggregation, backbone connectivity, and peering solutions. These cards perform traffic shaping and per-virtual circuit (VC) queueing, and support per-VC Modified Deficit Round Robin (MDRR) with per-VC low latency queueing (LLQ). They also support Any Transport over MPLS (AToM), enhanced traffic policing, and the ability to configure both AToM VCs and terminated VCs on a single port.

MDRR is implemented on a per-VC basis with up to eight queues per VC, where one of the queues is a low latency queue (LLQ). Both per-VC Weighted Random Early Detection (WRED) and per-VC MDRR are performed in the hardware.

The 4-Port OC-12c/STM-4c ATM ISE line card provides the Cisco 12000 Series Router with four 622-Mbps ATM interfaces. The 4-Port OC-3c/STM-1 ATM ISE line card provides four 155-Mbps ATM interfaces. The cards communicate with the Cisco 12000 Series Router switch fabric.

Layer 2 Limitation

1024

Features of the 4-Port ATM ISE Line Card

The following are the features supported by the 4-Port ATM ISE line cards:

• Traffic shaping on a per-VC and per-virtual path (VP) basis with a minimum granularity of 1 Kbps,

in compliance with I.371 granularity definition.

• Per-VC queueing using configurable per-VC queue limits or per-VC WRED.

• A VC address can be any of the virtual path identifier (VPI) and virtual channel identifier (VCI)

range. User-network interface (UNI) VPIs can be in the range of 0..255; network-to-network interface (NNI) VPIs can be in the range of 0..4095. VCIs can be in the range 0..65,535.

• Per-VC statistics through hardware.

• Per-port statistics through hardware.

• AAL5 [I.362] [I.363] reassembly and segmentation.

• Non-real-time variable bit rate (VBR-nrt) and real time variable bit rate (VBR-rt) traffic shaping

with 99+ percent shaping accuracy.

• Constant bit rate (CBR) traffic shaping with 99+ percent shaping accuracy.

• Unspecified bit rate (UBR) with support for optional peak cell rate (PCR) parameter with 99+

percent shaping accuracy.

• VP tunnel traffic shaping for the full range of VPI on UNI interfaces—up to 256 VP tunnels per port.

• Maximum transmission unit (MTU) of up to 9180 bytes.

• Each VC supports up to 9K MTU.

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Information About the 4-Port ATM ISE Line Card

• F4 and F5 flows of operation, administration, and maintenance (OAM) cells and OAM management

specified as requirements by [UNI 3.x] [I.610].

Layer 3-Specific Features

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

• Supports up to 2047 traffic-shaped VC connections per interface.

• Bidirectional OC-12c/STM-4c line rate for 64-byte packets (two cells) on all four ports. This is an

aggregate line rate of approximately 2.8 million packets per second.

• Bidirectional OC-3c/STM-1 full line rate for any packet size on all four ports.

• Support for up to 120 distinct WRED profiles per interface. These profiles are configurable using

Cisco IOS software.

• ATM VC bundle management.

• MPLS Traffic Engineering (TE), including Single Area (OSPF,ISIS), DS-TE (OSPF,ISIS),

Autobandwidth, TE Metrics (OSPF,ISIS), TE Node Exclusion (OSPF,ISIS), Multiarea (OSPF,ISIS).

• Support for thousands of ACL/xACL entries, including both ingress and egress for interfaces and

subinterfaces.

• Committed Access Rate (CAR), including CAR action continue, including both ingress and egress

for interfaces and subinterfaces.

• Policy-based routing (PBR) for interfaces and subinterfaces.

• Border Gateway Protocol (BGP) policy accounting.

• Unicast reversepath forwarding (uRPF) loose mode.

• Sophisticated MQC classifications based on IP ACL/xACL, IP precedence/DSCP, MPLS EXP, QoS

groups, and more.

• IP and MPLS traffic marking

• QoS Policy Propagation via BGP (QPPB)

• Ingress IP-based traffic shaping.

• Netflow, including sampled ingress/egress Netflow, aggregated Netflow, and MPLS-aware Netflow.

• High Availability, including route processor redundancy (RPR), RPR+, and Stateful Switchover

(SSO).

• ATM OAM F5 continuity check.

• MPLS virtual private network (VPN).

• UNI 3.x and Interim Local Management Interface (ILMI).

• Switched virtual circuit (SVC) support for point-to-point and point-to-multipoint connections.

• Multicast packet replication.

• ATM cell loss priority (CLP) bit setting.

• MPLS VPN Inter-AS.

• MPLS VPN carrier supporting carrier (CsC).

Layer 2-Specific Features

• Supports up to 2047 traffic-shaped VC connections per interface.

1. Subject to overall system limitation and configuration.

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How to Perform a Basic Configuration of the 4-Port ATM ISE Line Card

• Any Transport over Multiprotocol Label Switching (MPLS) [AToM].

• ATM OA M E m u l a t io n

• Cell-based policing

• Experimental bit marking

• Cell packing for port, VC, and VP modes

• Cell relay for port, VC, and VP modes

How to Perform a Basic Configuration of the 4-Port ATM ISE Line Card

The 4-port ATM ISE line cards provide the ability to configure Layer 2 AToM VCs as well as Layer 3 terminated VCs. On any individual ATM interface, you can configure both AToM VCs and terminated VCs as required. The configurations of these are discussed in subsequent sections in this document. This section provides basic ATM interface configuration information and discusses those features that are applicable to both AToM VCs and terminated VCs.

Configuring ATM interfaces and virtual circuits is described in the following sections:

• Configuring an ATM Interface, page 5

• Configuring UNI and NNI Cell Support, page 7

• Troubleshooting Tips, page 7

Configuring an ATM Interface

Use the show running-config command to display current port configuration information. On power up, the interface on a new 4-Port ATM ISE line card is shut down. To enable the interface, you must enter a no shutdown command in configuration mode.

Default Interface Configuration

When the 4-Port ATM ISE line card is enabled (taken out of shutdown) with no additional configuration commands applied, the default interface configuration file parameters, described in Tab le 3, are used.

Table 3 4-Port ATM ISE Line Card Default Configuration Values

Parameter Configuration File Entry Default Value

Maximum transmission unit (MTU) [no] mtu bytes 4470 bytes

Maximum numbers of virtual circuits [no] atm maxvc numvc 2047

Loopback [no] loopback [diagnostic | line] no loopback

Internal clock [no] atm clock internal no atm clock internal

SONET framing [no] atm sonet stm-4 no atm sonet stm-4

2. Subject to overall system limitation and configuration.

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Configuration Basics

After you verify that the new 4-Port ATM ISE line card is installed correctly, use the configure command to configure the new interface. Be prepared with the information that you will need, such as the interface IP address.

The Cisco 12000 Series Router identifies an interface address by its line card slot number and port number, in the format slot/port. Because each 4-Port ATM ISE line card contains four ATM interfaces, the port numbers are 0 to 3. For example, the slot/port address of an ATM interface on a 4-Port ATM ISE line card installed in line card slot 2 is 2/0 to 2/3.

Use the following procedure to create a basic configuration, including enabling an interface and specifying IP routing. You might also need to enter other configuration subcommands, depending on the requirements for your system configuration.

(For descriptions of configuration subcommands and the configuration options available, refer to the appropriate software publications in the “Related Documents” section on page 91.)

SUMMARY STEPS

1. show version

2. show interfaces

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command or Action Purpose

Step 1

Step 2

Step 3

show version

show interfaces

enable

Example:

Router> enable

Step 4

configure terminal

Example:

Router# configure terminal

Step 5

interface atmslot/port

3. enable

4. configure terminal

5. interface atmslot/port

6. no shutdown

7. Ctrl-Z

8. copy running-config startup-config

Confirm that the system recognizes the line card.

Check the status of each port on the line card.

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Enter interface configuration mode for the specified ATM interface.

Example:

Router(config)# interface atm1/3

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Command or Action Purpose

Step 6

Step 7

Step 8

no shutdown

Example:

Router(config-if)# no shutdown

Press Ctrl-Z

copy running-config startup-config

Configuring UNI and NNI Cell Support

You can designate that the cell format for an interface be either User Network Interface (UNI) or Network Node Interface (NNI). The default setting is UNI. Use the atm maxvpi-bits command to change the maximum VPI range from 0..255 (UNI) to 0..4095 (NNI).

Router(config)# interface atm 2/2 Router(config-if)# atm maxvip-bits 12

How to Perform a Basic Configuration of the 4-Port ATM ISE Line Card

Change the state of the interface to up and enable the interface.

Exit configuration mode.

Perform this after completing all desired configuration commands on the interface or subinterface.

Write the new configuration to memory.

To change the interface setting back to NNI, use the no form of this command: no maxvip-bits 12.

This configuration should be entered before the connection is added.

Troubleshooting Tips

To verify the operation of the interfaces configured on the 4-Port ATM ISE line card, use the following commands:

Command Purpose

Router# show version

Router# show gsr

Router# show interfaces atm slot/port

Router# show running-config

Displays the configuration of the system hardware, the software release, the names and sources of configuration files, and the boot images. Verify that the list includes the newly configured 4-Port ATM ISE line card ports and interfaces.

Displays information about the hardware modules installed in the Cisco 12000 Series Router.

Displays information about the ATM interfaces. For example, to display information about slot 2, port 0, enter:

Router# show interfaces atm2/0

Displays information about the currently running configuration in RAM.

To display information about the current state of the ATM network, use the following commands:

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How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Command Purpose

Router# show atm interface atm slot/port

Router# show atm traffic

Displays current ATM-specification information about the 4-Port ATM ISE line card interface.

Displays current ATM statistics.

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

The following configuration tasks are described in this section:

• Configuring Layer 3 Terminated Virtual Circuits, page 8

• Configuring ATM Shaping on Terminated VCs, page 9

• Configuring OAM Management on Terminated VCs, page 11

• Configuring Quality of Service on Terminated VCs, page 14

• Configuring and Managing VC Bundles, page 28

• Configuring Bridged PVCs, page 35

Configuring Layer 3 Terminated Virtual Circuits

A virtual circuit (VC) is a point-to-point connection between two ATM devices. A VC is established for each ATM end node with which the router communicates. The characteristics of the VC are established when it is created and include the following for the 4-Port ATM ISE line cards:

• Quality of service (QoS)

• ATM adaptation layer (AAL) mode

• Encapsulation type (LLC/SNAP, IP MUX, and NLPID)

• Peak and average transmission rates

Permanent virtual circuits (PVCs) configured on the router remain active until the circuit is removed from the configuration. All virtual circuit characteristics apply to PVCs. When a PVC is configured, all configuration options are passed to the 4-Port ATM ISE line card. These PVCs are written to the nonvolatile RAM (NVRAM) as part of the configuration and are used when the Cisco IOS image is reloaded.

When you create a PVC, you create a virtual circuit descriptor (VCD) and attach it to the VPI and VCI. The VCD tells the card which VPI/VCI to use for a particular packet. The 4-Port ATM ISE line card requires this feature to manage the packets for transmission. The number chosen for the VCD is independent of the VPI/VCI used.

A permanent virtual path (PVP) is like a bundle of VCs, transporting all cells with a common VPI, rather than a specific VPI and VCI.

PVCs are created and configured using the pvc command in interface configuration mode. PVPs are created and configured using the atm pvp command in interface configuration mode.

The syntax of the pvc command is as follows:

pvc [name] vpi/vci

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How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

The syntax of the atm pvp command is:

atm pvp vpi

vpi is the ATM network VPI to use for this virtual circuit, in the range of 0 to 255 for UNI or 0 to 4095 for NNI; vci is the ATM network VCI to use for this virtual circuit, in the range of 0 to 655,535.

Troubleshooting Tips

To display information about the connected virtual circuits, use the following commands:

Command Purpose

Router# show atm pvc

Router# show atm vc

Displays current ATM PVC information.

Displays current ATM VC information.

Configuring ATM Shaping on Terminated VCs

The 4-Port ATM ISE line cards support IP traffic shaping on terminated VCs. The following ATM shaping options are available:

Restrictions

• Constant bit rate (CBR)—Supports real-time applications that request a static amount of bandwidth

that is continuously available for the duration of the connection. (See Step 5.)

• Real-time variable bit rate (VBR-rt)—Supports real-time applications that have bursty transmission

characteristics. (See Step 6.)

• Non-real-time variable bit rate (VBR-nrt)—Supports non-real-time applications with bursty

transmission characteristics that tolerate high cell delay, but require low cell loss. (See Step 7.)

• Unspecified bit rate (UBR)—Supports non-real-time applications that tolerate both high cell delay

and cell loss on the network. There are no network service-level guarantees for the UBR service category, and therefore it is a best-effort service. (See Step 8.)

To configure ATM shaping, perform the shaping commands in PVC mode. You should use only one of the shaping commands in Step 5 through Step 8, depending on the type of shaping to be configured.

CDVT

When traffic shaping is configured on a VC, the cell delay variation (CDV) is set for the VC. This value will change according to the shaping class defined. The cell delay variation tolerance (CDVT) values are shown in Table 4.

Table 4 CDVT per Traffic Class for Traffic Shaping

Traffic Class OC-12c/STM-4c Line Card OC-3c/STM-1 Line Card

CBR 70 μsec 70 μsec

UBR 185 μsec 305 μsec

VBR-RT 70 μsec 70 μsec

VBR-NRT 185 μsec 305 μsec

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Note For VBR connections in which the sustainable cell rate (SCR) is not equal to the PCR value, the CDVT

is significantly lower.

Decreased VC Throughput

If you configure a VC on a 4-Port OC-12/STM-4 ATM ISE interface with a peak cell rate (PCR) or sustainable cell rate (SCR) greater than OC-6 (using the ubr, vbr-nrt, vbr-rt, or cbr commands), and attach a traffic policy with MDRR (configured using the bandwidth command) to the interface for specified traffic classes, when traffic on the interface from the specified classes is equal to or greater than the configured PCR or SCR values, frequent queueing and dequeueing changes occur between the MDRR queues and may cause a decreased VC throughput.

Decreased throughput is more likely to occur when the traffic consist of small packets and when a high amount of traffic is sent toward the high-priority queue. Such traffic will increase significantly the frequency of switches between queues, which may cause the nonpriority queues to lose their bandwidth. Therefore, when configuring a VC to more than OC-6, it is recommended to limit the high priority traffic using the police command.

SUMMARY STEPS

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Use either Step 5, Step 6, Step 7 or Step 8 depending on the desired shaping.

1. enable

2. configure terminal

3. interface atmslot/port.subinterface

4. pvc vpi/vci

5. cbr pcr

6. vbr-rt pcr scr

7. vbr-nrt pcr scr

8. ubr pcr

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Example:

Router# configure terminal

Step 3

interface atmslot/port.subinterface

Example:

Router(config)# interface atm1/0.2

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Specifies an ATM interface or subinterface to configure.

Configure subinterfaces so that you can take advantage of access list definitions for the IP traffic.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command or Action Purpose

Step 4

pvc [name] vpi/vci

Example:

Router(config-if)# pvc 0/100

Step 5

cbr pcr

Router(config-if-vc)# cbr 155000

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Specifies a PVC with the specified VPI and virtual circuit identifier (VCI).

Specifies CBR shaping.

The pcr value indicates the peak cell rate. The range is from 38 to 622,000 Kbps.

Note Use either Step 5, Step 6, Step 7, or Step 8.

Step 6

vbr-rt pcr scr burst

Specifies VBR-rt shaping.

The pcr value indicates the peak cell rate, and its range is from 38 to 622,000 Kbps. The scr value indicates the sustainable cell rate, and its range is from 38 to pcr Kbps. The burst value indicates the burst size, in number of cells.

Specifies VBR-nrt shaping.

Step 7

Example:

Router(config-if-vc)# vbr-rt 100000 40000 200000

vbr-nrt pcr scr mbs

The pcr value indicates the peak cell rate, and its range is

Example:

Router(config-if-vc)# vbr-nrt 100000 40000 200000

from 38 to 622,000 Kbps. The scr value indicates the sustainable cell rate, and its range is from 38 to pcr Kbps. The mbs value indicates the maximum burst size, in number of cells.

Step 8

ubr pcr

Specifies UBR shaping.

The pcr value indicates the peak cell rate, and its range is

Example:

Router(config-if-vc)# ubr 100000

from 38 to 622,000 Kbps.

Configuring OAM Management on Terminated VCs

OAM may be enabled for PVC or SVC management on terminated VCs. To configure OAM management for an ATM Layer 3 PVC, perform the following procedure.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface atmslot/port.subinterface [point-to-point | multipoint]

4. pvc vpi/vci

5. oam-pvc manage

6. oam retry up-count down-count retry-frequency

7. oam-pvc manage cc {end | segment} [direction {both | sink | source}] [keep-vc-up [end aisrdi

failure | seg aisrdi failure]]

8. oam retry cc {end | segment} [activation-count [deactivation-count [retry-frequency]]]

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DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

interface atmslot/port.subifnum {point-to-point | multipoint}

Example:

Router(config)# interface atm1/3.2 point-to-point

Step 4

pvc [name] vpi/vci

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specify the new ATM subinterface to configure.

Specify an ATM PVC.

Example:

Router(config-subif)# pvc 10/50

Step 5 oam-pvc manage [frequency]

Example:

Router(config-if-atm-vc)# oam-pvc manage

Step 6

oam retry up-count down-count retry-frequency

Example:

Router(config-if-atm-vc)# oam retry 3 5 1

Enable OAM management.

(Optional) Specify OAM management parameters for re-establishing and removing a PVC connection.

Use the up-count argument to specify the number of consecutive end-to-end F5 OAM loopback cell responses that must be received in order to change a PVC connection state to up. Use the down-count argument to specify the number of consecutive end-to-end F5 OAM loopback cell responses that are not received in order to tear down a PVC. Use the retry-frequency argument to specify the frequency (in seconds) at which end-to-end F5 OAM loopback cells should be transmitted when a change in UP/DOWN state is being verified. For example, if a PVC is up and a loopback cell response is not received after the frequency (in seconds) specified using the oam-pvc command, then loopback cells are sent at the retry-frequency to verify whether or not the PVC is down.

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Command or Action Purpose

Step 7

oam-pvc manage cc {end | segment} [direction {both | sink | source}] [keep-vc-up [end aisrdi failure | seg aisrdi failure]]

Configures ATM OAM F5 continuity check (CC) management to detect connectivity failures at the ATM layer.

Example:

Router(config-if-atm-vc)# oam-pvc manage cc segment direction source

Step 8

oam retry cc {end | segment} [activation-count [deactivation-count [retry-frequency]]]

Configures the retry count and the frequency at which CC activation and deactivation requests are sent to the device at the other end of the PVC or the segment.

Example:

Router(config-if-atm-vc)# oam retry cc segment 10 10 30

OAM Management

By default, end-to-end F5 OAM loopback cell generation is turned off for each PVC. A PVC is determined as down when any of the following is true on that PVC:

• The router does not receive a loopback reply after a configured number of retries of sending

end-to-end F5 OAM loopback cells.

• The router receives a Virtual Circuit-Alarm Indication Signal (VC-AIS) cell.

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

The router receives a Virtual Circuit-Remote Detect Indicator (VC-RDI) cell.

A PVC is determined as up when all the following are true on that PVC:

• The router receives a configured number of successive end-to-end F5 OAM loopback cell replies.

• The router does not receive VC-AIS cell for 3 seconds.

• The router does not receive VC-RDI cell for 3 seconds.

Note the following regarding OAM management:

• When OAM management is not enabled, loopback (LB) cells received by the PVC are looped back

to the sender, and for any received F4/F5-AIS, F4/F5-RDI cells are transmitted via this PVC, but the PVC state is not changed.

The 4-Port ATM ISE line card supports OAM management enabled mode for the entire range of VCs supported, while using the default frequency of 10 seconds on all VCs. The minimum OAM LB cell frequency of 1 second is currently permitted over no more then 50 PVCs (chassis performance limitation), and the default interval of 10 seconds is used for the rest of the PVCs.

OAM F5 Continuity Check

The 4-Port ATM ISE line card also provides OAM support for the use of F5 segment and end-to-end continuity check (CC) cells to detect connectivity failures at the ATM layer. It also generates various Simple Network Management Protocol (SNMP) notifications when CC cells indicate virtual circuit (VC) connectivity failure

ATM OAM F5 CC cells provide an in-service tool optimized to detect connectivity problems at the VC level of the ATM layer. CC cells are sent between a router designated as the source location and a router designated as the sink location. The local router can be configured as the source, the sink, or both.

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How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

The 4-Port ATM ISE line card implements two types of OAM cells: CC cells for fault management and CC cells for activation and deactivation. Fault management cells detect connectivity failures. Activation and deactivation cells initiate the activation or deactivation of continuity checking.

Configuring Quality of Service on Terminated VCs

Quality of Service (QoS) on terminated VCs is configured using the Modular QoS CLI (MQC). MQC allows users to create traffic policies and attach these policies to interfaces. A traffic policy contains a traffic class and one or more QoS features. A traffic class is used to classify traffic, and the QoS features in the traffic policy determine how to treat the classified traffic.

To configure and enable QoS on terminated VCs, you must define a traffic class, create a traffic policy, and attach this traffic policy to the PVC. See the “Configuring Modular QoS CLI” section on page 84 for detailed instructions on how to complete these tasks.

The following tasks use the MQC to configure QoS on terminated VCs:

• Configuring Traffic Policing, page 14

• Configuring a Per-VC Queue Limit, page 16

• Configuring Per-VC WRED, page 18

• Configuring Per-VC MDRR and Low Latency Queueing, page 20

• Configuring the set Commands, page 23

• Troubleshooting Tips, page 27

Configuring Traffic Policing

This task describes how to configure traffic policing using the MQC. Traffic policing can be configured for either ingress or egress traffic.

This task illustrates the use of the match access-group command. For information on other match options, refer to the “Configuring Modular QoS CLI” section on page 84.

When traffic policing is configured, packets coming into interface are evaluated by the token bucket algorithm to determine whether they conform to or exceed the specified parameters. The conform-action, exceed-action, and violate-action parameters in the police command determine what is done with the packets.

SUMMARY STEPS

1. enable

2. configure terminal

3. class-map class-map-name

4. match access-group access-group

5. exit

6. policy-map policy-name

7. class class-name

8. police bps burst-normal burst-max conform-action action exceed-action action violate-action

action

9. exit

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10. exit

11. interface atmslot/port.subifnum

12. pvc vpi/vci

13. service-policy {input | output} policy-name

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

class-map class-map-name

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the user-defined name of the traffic class.

Step 4

Step 5

Step 6

Step 7

Step 8

Step 9

Step 10

Example:

Router(config)# class-map acgroup2

match access-group access-group

Example:

Router(config-cmap)# match access-group 2

exit

policy-map policy-name

Example:

Router(config)# policy-map police

class class-name

Example:

Router(config-pmap)# class acgroup2

Router(config-pmap-c)# police bps burst-normal

burst-max conform-action action exceed-action action violate-action action

Example:

Router(config-pmap)# police 8000 2000 4000 conform-action transmit exceed-action set-qos-transmit 4

exit

Specifies the numbered access list against whose contents packets are checked to determine if they belong to the class.

Exits class-map mode.

Specifies the name of the traffic policy to configure.

Specifies the name of a predefined class, which was defined with the class-map command, to be included in the traffic policy.

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm.

Exits policy-map class mode.

Exits policy-map mode

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Command or Action Purpose

Step 11

Step 12

Step 13

interface atmslot/port.subifnum

Example:

Router(config)# interface atm1/0.1

pvc vpi/vci

Example:

Router(config-subif)# pvc 10/50

service-policy {input | output} policy-name

Example:

Router(config-if-atm-vc)# service-policy input police

The command syntax of the police command allows you to specify the action to be taken on a packet when you enable the action keyword. The actions resulting from the keyword choices are listed in

Table 5.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies the ATM subinterface to configure.

Specifies the ATM PVC to attach the traffic policy to.

Attaches the traffic policy to the PVC.

Table 5 police Command Action Keywords

Keyword Resulting Action

drop Drops the packet.

set-clp-transmit Sets the ATM CLP bit and sends the packet. This is supported

set-discard-class-transmit

new-class

set-dscp-transmit dscp Sets the differentiated services code point (DSCP) value and

set-mpls-exp-imposition-transmit

mpls-exp

set-mpls-exp-topmost-transmit

mpls-exp

set-prec-transmit new-prec Sets the IP precedence and sends the packet.

set-qos-transmit new-qos Sets the QoS group and sends the packet. This is supported for

transmit Sends the packet.

Configuring a Per-VC Queue Limit

for egress only.

Sets the discard-class and sends the packet. This is supported for ingress on terminated VCs only.

sends the packet.

Sets the experimental value at tag imposition and sends the packet. This is supported for ingress on terminated VCs only.

Sets the experimental value on the topmost label and sends the packet. This is supported on terminated VCs only.

ingress only.

Use this task to configure a per-VC queue limit on a single egress or ingress queue.

Restrictions

A queue limit cannot be configured together with WRED.

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SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map policy-name

4. class class-default

5. queue-limit cells cells (for egress queue) or queue-limit packets packets (for ingress queue)

6. exit

7. exit

8. interface atmslot/port.subifnum

9. pvc vpi/vci

10. service-policy {input | output} policy-name

DETAILED STEPS

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Command or Action Purpose

enable

Enables privileged EXEC mode.

• Enter your password if prompted.

Example:

Router> enable

configure terminal

Enters global configuration mode.

Example:

Router# configure terminal

policy-map policy-name

Specifies the name of the traffic policy to configure.

Example:

Router(config)# policy-map qlimit1

class class-default

Specifies to configure the default class.

Example:

Router(config-pmap)# class class-default

queue-limit cells cells or queue-limit packets packets

Specifies the maximum number of cells or packets queued for a traffic class that has a bandwidth configuration or class-default specified. Ingress queues are defined in packets and egress queues are defined in cells.

Example:

Router(config-pmap-c)# queue-limit 576 cells

exit

Exits policy-map class mode.

Exits policy-map mode.

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Command or Action Purpose

Step 8

interface atmslot/port.subifnum point-to-point

Example:

Router(config)# interface atm4/0.1

Step 9

pvc vpi/vci

Example:

Router(config-subif)# pvc 4/11

Step 10

service-policy {input | output} policy-name

Example:

Router(config-if-atm-vc)# service-policy output qlimit1

Configuring Per-VC WRED

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies the ATM subinterface to configure.

Specifies the ATM PVC to attach the traffic policy to.

Attaches the traffic policy to the PVC.

Restrictions

SUMMARY STEPS

Use this task to configure DSCP-based or precedence-based WRED on a VC. WRED can be configured on both ingress or egress queues, where ingress queues are defined in terms of packets and egress queues are defined in terms of cells.

• Random-detect cannot be configured on a class that has priority configured.

• No more than three different Random Early Detection (RED) profiles can be configured on one class

of service (COS) queue.

For precedence-based WRED use Step 7; for DSCP-based WRED use Step 8 or Step 9.

1. enable

2. configure terminal

3. policy-map policy-name

4. class class-name

5. random-detect

6. random-detect exponential-weighting-constant n

7. random-detect precedence precedence min-threshold {cells | packets} max-threshold {cells |

packets} [mark-prob-denominator]

8. random-detect dscp-based

9. random-detect dscp dscpvalue min-threshold {cells | packets} max-threshold {cells | packets}

[mark-probability-denominator]

10. exit

11. exit

12. interface atmslot/port.subifnum

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13. pvc vpi/vci

14. service-policy output policy-name

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

policy-map policy-name

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the name of the traffic policy to configure.

Step 4

Step 5

Step 6

Step 7

Example:

Router(config)# policy-map wred-1

class class-name

Example:

Router(config-pmap)# class class1

random-detect

random-detect exponential-weighting-constant n

Example:

Router(config-pmap-c)# random-detect exponential-weighting-constant 10

random-detect precedence precedence min-threshold {cells | packets} max-threshold {cells | packets} [mark-prob-denominator]

Example:

Router(config-pmap-c)# random-detect precedence 4 500 cells 1100 cells 1

Specifies to configure the first class.

Enables a weighted random early detection (WRED) drop policy for a traffic class that has a bandwidth configuration or class-default specified.

Configures a WRED exponential weighting constant on a per-COS-queue basis.

Specifies the minimum and maximum cell thresholds and, optionally, the mark-probability denominator for the precedence value.

Specify cells for egress and packets for ingress.

Note Use this step to configure precedence-based

WRED.

Step 8

random-detect dscp-based

Indicates that WRED is to use the DSCP value when it calculates the drop probability for the packet.

Note Use this step to configure DSCP-based WRED.

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Command or Action Purpose

Step 9

random-detect dscp dscpvalue min-threshold {cells | packets} max-threshold {cells | packets} [mark-probability-denominator]

Example:

Router(config-pmap-c)# random-detect dscp 1 300 cells 700 cells 1

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies the minimum and maximum cell thresholds and, optionally, the mark-probability denominator for the DSCP value.

Specify cells for egress and packets for ingress.

Note Use this step to configure DSCP-based WRED.

Step 10

Step 11

Step 12

exit

interface atmslot/port.subifnum

Exits policy-map class mode.

Exits policy-map mode.

Specifies the ATM subinterface to configure.

Example:

Router(config)# interface atm1/0.1

Step 13

pvc vpi/vci

Specifies the ATM PVC to attach the policy map to.

Example:

Router(config-subif)# pvc 1/1

Step 14

service-policy output policy-name

Attaches the policy map to the PVC.

Example:

Router(config-if-atm-vc)# service-policy output wred-1

Configuring Per-VC MDRR and Low Latency Queueing

This task configures egress MDRR.

Using egress MDRR, the 4-Port ATM ISE line card supports up to eight queues for classes of traffic per VC. One of the queues is always reserved for a special class called class-default. Up to seven of the classes are normal queues, including the class-default queue. The eighth class is always a low latency queue.

The class, class-default, is always configured, and it consumes one of the eight queues. If not configured explicitly, it is configured implicitly. When the bandwidth command is used, at least 1 percent of traffic must be reserved for the class-default queue. All packets that do not match any user-defined class on the policy map are considered to belong to class-default, and therefore enter the default queue.

The low latency queue, or priority queue, is also always created. All traffic sourced from the router (including ping traffic and multicast traffic) uses this queue, regardless of classification.

Bandwidth percentages are converted into weights in units of ATM cells. The weights are internally proportioned such that the bandwidth is divided accurately among VCs.

The following are recommendations for configuring per-VC MDRR on the 4-Port ATM ISE line card:

• Set the bandwidth to be at least 10 percent in each class. The default class, class-default, should also

have at least 10 percent of the bandwidth allocation; therefore, you should ensure that the bandwidth allocated to all configured classes is less that 90 percent.

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• Set the MTU as low as possible on each subinterface, using the ip mtu command, while still

avoiding fragmentation. Fragmentation causes extreme performance degradation, because it is done in the slow path. Do not decrease the MTU to the point where it causes fragmentation.

Note Changing MTU settings may cause all VCs on the interface or subinterface to be torn down and

set back up.

If none of the classes is a priority class, the maximum number of classes that can be configured with the bandwidth command, excluding the class-default class, is six. When class-default is not specified, at least 1 percent must be allocated to this class.

If priority is not specified on any class, then any form of the bandwidth command can be used. If the priority command is configured without a police command (drop exceed-action), then the only form of the bandwidth command that is allowed on the other classes in the policy map is the bandwidth

remaining command. If a police command is used on the priority queue, then all forms of the bandwidth commands are allowed.

SUMMARY STEPS

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

DETAILED STEPS

Command or Action Purpose

Step 1

enable

1. enable

2. configure terminal

3. policy-map policy-name

4. class class-name

5. priority

6. class class-name

7. bandwidth remaining percent percent

8. class class-default

9. exit

10. exit

11. interface atmslot/port.subifnum

12. pvc vpi/vci

13. service-policy output policy-name

Enables privileged EXEC mode.

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

• Enter your password if prompted.

Enters global configuration mode.

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Command or Action Purpose

Step 3

policy-map policy-name

Example:

Router(config)# policy-map WRED-MDRR-POLICY-1

Step 4

class class-name

Example:

Router(config-pmap)# class class1

Step 5

Step 6

priority

class class-name

Example:

Router(config-pmap)# class class2

Step 7

bandwidth remaining percent percent

Example:

Router(config-pmap-c)# bandwidth remaining percent 50

Step 8

Step 9

Step 10

Step 11

class class-default

exit

interface atmslot/port.subifnum

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies the name of the traffic policy to configure.

Specifies to configure the first class.

Specifies the class as the priority class.

Specifies to configure the second class.

Specifies a minimum bandwidth guarantee to a traffic class.

Here the minimum bandwidth guarantee is based on the remaining bandwidth available. If there is no available bandwidth, the class will receive no bandwidth, regardless of the percent specified.

Explicitly specifies to configure the default class.

Exits policy-map class mode.

Exits policy-map mode.

Specifies the ATM subinterface to configure.

Step 12

Step 13

Example:

Router(config)# interface atm1/0.1

pvc vpi/vci

Specifies the ATM PVC to attach the policy map to.

Example:

Router(config-subif)# pvc 1/1

service-policy output policy-name

Attaches the policy map to the PVC.

Example:

Router(config-if-atm-vc)# service-policy output WRED-MDRR-POLICY-1

Note If the class-default is not explicitly configured, it is implicitly configured. All remaining bandwidth is

allocated to class-default.

Note VCs with a configured bandwidth (using the bandwidth command) are limited to a peak cell rate (PCR)

of 299,520 Kbps on the 4-Port OC-12c/STM-4c ATM ISE line card.

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Examples

Following are additional examples of configuring MDRR:

• Configuring Per-VC MDRR and Low Latency Queueing with Queue Limits

• Configuring Per-VC MDRR and Policed Low Latency Queueing

Configuring Per-VC MDRR and Low Latency Queueing with Queue Limits

In the following example, per-VC MDRR and LLQ are configured with nondefault queue limits.

Configure the policy map as shown in the example:

Router(config)# policy-map MDRRandQlimit Router(config-pmap)# class class1 Router(config-pmap-c)# priority Router(config-pmap-c)# class class2 Router(config-pmap-c)# bandwidth remaining percent 50 Router(config-pmap-c)# queue-limit 576 cells Router(config-pmap-c)# class class-default Router(config-pmap-c)# queue-limit 576 cells

After the policy map has been created, configure it on the VC using the service-policy command.

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Configuring Per-VC MDRR and Policed Low Latency Queueing

If the police command is used with the exceed-action set to drop on the priority queue, then the bandwidth command can be used with either a percent or kbps specified.

The following example uses the bandwidth percent command to guarantee bandwidth to nonpriority classes. Twenty percent of the VC rate is guaranteed to class2.

Router(config)# policy-map MDRR-POLICE-LLQ Router(config-pmap)# class class1 Router(config-pmap-c)# priority Router(config-pmap-c)# police 64000000 conform-action transmit exceed drop Router(config-pmap-c)# class class2 Router(config-pmap-c)# bandwidth percent 20 Router(config-pmap-c)# end Router#

The next example uses the bandwidth remaining percent command, and specifies that 20 percent of the remaining bandwidth is guaranteed to class2.

After the policy map has been created, configure it on the VC using the service-policy command.

Configuring the set Commands

This task illustrates how to configure the toggling of various bits, such as the ATM CLP, the IP DSCP, the IP precedence, and the MPLS experimental. Setting of the ATM CLP bit is only supported on egress queues; setting of all other bits is supported on both ingress and egress queues.

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In this task, use one of either Step 8, Step 9, Step 10, Step 11, or Step 12, depending on what bits you need to configure.

SUMMARY STEPS

1. enable

2. configure terminal

3. class-map class-map-name

4. match ip precedence numbers

5. exit

6. policy-map policy-name

7. class class-name

8. set atm-clp

9. set ip precedence value

10. set ip dscp ip-dscp-value

11. set mpls experimental value

12. set qos-group value

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

class match-any class-name

Example:

Router(config-pmap)# class match-any prec345

Step 4

match ip precedence numbers

13. exit

14. exit

15. interface atmslot/port.subifnum

16. pvc vpi/vci

17. service-policy input policy-name

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the user-defined name of the traffic class. The match-any keyword specifies a logical OR operator for all matching statements under this traffic class.

Specifies up to eight IP precedence values used as match criteria.

Example:

Router(config-cmap)# match ip precedence 3 4 5

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Command or Action Purpose

Step 5

Step 6

exit

policy-map policy-name

Example:

Router(config)# policy-map SET_ATM_CLP

Step 7

class prec345

Example:

Router(config-pmap)# class prec345

Step 8

set atm-clp

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Exits class-map mode.

Specifies the name of the traffic policy to configure.

Specifies the name of a predefined class, which was defined with the class-map command, to be included in the traffic policy.

Sets the ATM cell loss priority bit to 1.

Step 9

Step 10

Step 11

Step 12

Step 13

Step 14

Step 15

Step 16

Example:

Router(config-pmap)# set atm-clp

set ip precedence

set ip dscp ip-dscp-value

Example:

Router(config-pmap-c)# set ip dscp 31

set mpls experimental value

set qos-group value

Example:

Router(config-pmap-c)# set qos-group 10

exit

interface atmslot/port.subifnum

Example:

Router(config)# interface atm1/0.1

pvc vpi/vci

Note Use either Step 8, Step 9, Step 10, Step 11, or

Step 12, depending on what bits you need to

configure.

Specifies the IP precedence of packets within a traffic class. The IP precedence value can be any value between 0 and 7.

Specifies the IP DSCP of packets within a traffic class. The IP DSCP value can be any value between 0 and 63.

Designates the value to which the MPLS bits are set if the packets match the specified policy map.

Specifies a QoS group value to associate with the packet. The QoS group value can be any value between 0 and 99.

Exits policy-map class mode.

Exits policy-map mode.

Specifies the ATM subinterface to configure.

Specifies the ATM PVC to attach the policy map to.

Example:

Router(config-subif)# pvc 10/50

Step 17

service-policy input policy-name

Example:

Router(config-if-atm-vc)# service-policy output SET_ATM_CLP

Attaches the policy map to the PVC.

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Examples

Following are examples of configuring the IP DSCP value and the ATM CLP bit:

• Configuring the IP DSCP Value, page 26

• Configuring the ATM CLP Bit on a Per-Queue Basis with Per-VC MDRR, page 26

• Configuring the ATM CLP Bit on Class-Default Queue with Per-VC MDRR, page 26

• Configuring the ATM CLP Bit by Traffic Policing, page 27

Configuring the IP DSCP Value

This example marks packets of class1 by setting the IP differentiated services code point (DSCP):

Router(config)# policy-map QOS-SET Router(config-pmap)# class class1 Router(config-pmap-c)# set ip dscp 63 Router(config-pmap-c)# class class2 Router(config-pmap-c)# bandwidth percent 30 Router(config-pmap-c)# exit Router(config-pmap)#

In the above example, class1 is configured with a nonqueueing feature. Traffic that is matched to class1 is considered to belong to this class for purposes of the nonqueueing feature, but for purposes of queueing, the packet will go into the default queue.

After the policy map has been created, configure it on the VC using the service-policy command.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Configuring the ATM CLP Bit on a Per-Queue Basis with Per-VC MDRR

This example configures the CLP bit setting on a per-queue basis. Precedence 0 and 1 go to the queue of class prec01 with CLP bit off; precedence 2 goes to the queue of class prec2 with the CLP on; precedence 3, 4, and 5 go to the queue of class prec345 with the CLP on; all other traffic goes to the queue of class-default with the CLP bit off.

Router(config)# class-map match-any prec01 Router(config-cmap)# match ip prec 0 1

Router(config)# class-map match-any prec2 Router(config-cmap)# match ip prec 2

Router(config)# class-map match-any prec345 Router(config-cmap)# match ip prec 3 4 5

Router(config)# policy-map SET_ATM_CLP Router(config-pmap)# class prec01 Router(config-pmap-c)# bandwidth percent 10 Router(config-pmap-c)# class prec2 Router(config-pmap-c)# bandwidth percent 10 Router(config-pmap-c)# set atm-clp Router(config-pmap-c)# class prec345 Router(config-pmap-c)# bandwidth percent 10 Router(config-pmap-c)# set atm-clp Router(config-pmap-c)# exit

After the policy map has been created, configure it on the VC using the service-policy command.

Configuring the ATM CLP Bit on Class-Default Queue with Per-VC MDRR

This example configures the CLP bit setting on part of the traffic of the class-default queue. Precedence 0, 1 go to the queue of class prec01 with the CLP bit off; precedence 3, 4, and 5 go to the queue of class class-default with the CLP on; all other traffic goes to the queue of class-default with the CLP bit off.

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Router(config)# class-map match-any prec01 Router(config-cmap)# match ip prec 0 1

Router(config)# class-map match-any prec345 Router(config-cmap)# match ip prec 3 4 5

Router(config)# policy SET_ATM_CLP Router(config-pmap)# class prec01 Router(config-pmap-c)# bandwidth percent 10 Router(config-pmap-c)# class prec345 Router(config-pmap-c)# set atm-clp Router(config-pmap-c)# exit

After the policy map has been created, configure it on the VC using the service-policy command.

Configuring the ATM CLP Bit by Traffic Policing

This example uses traffic policing to mark packets by setting the ATM CLP bit:

Router(config)# policy-map POLIC_SET_ATM_CLP Router(config-pmap)# class class1 Router(config-pmap-c)# police 64000000 conform-action transmit exceed-action

set-clp-transmit

Router(config-pmap-c)# exit

How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

After the policy map has been created, configure it on the VC using the service-policy command.

Troubleshooting Tips

Use the show class-map class-name command to display the information relating to a traffic class. Use the show policy-map command to display the configuration of a traffic policy and its associated traffic classes. Forms of these commands are listed in the table below.

Command Purpose

Router# show class-map

Router# show class-map class-name

Router# show policy-map

Router# show policy-map policy-map-name

Router# show policy-map interface

Router# show policy-map interface interface-spec

input

Router# show policy-map interface interface-spec output

Router# show policy-map [interface [interface-spec

[input | output] [class class-name]]]]

Displays all traffic class information.

Displays the traffic class information for the user-specified traffic class.

Displays all configured service policies.

Displays the user-specified traffic policy.

Displays configurations and statistics of all input and output policies attached to an interface.

Displays configuration and statistics of the input and output policies attached to a particular interface.

Displays configuration and statistics of the input policy attached to an interface.

Displays configuration and statistics of the output policy attached to an interface.

Displays the configuration and statistics of the class name configured in the policy.

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Configuring and Managing VC Bundles

See the following sections for configuration tasks for the VC bundle management feature. Each task in the list is identified as either required or optional.

• Creating a VC Bundle, page 28

• Applying Bundle-Level Parameters, page 28

• Committing a VC to a Bundle, page 30

• Applying Parameters to Individual VCs, page 30

• VC Bundle Examples, page 32

• Troubleshooting Tips, page 34

Creating a VC Bundle

To create a bundle and enter bundle configuration mode, in which you can assign attributes and parameters to the bundle and all its member VCs, use the following command in subinterface configuration mode:

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command Purpose

Router (config-subif)# bundle bundle-name

Creates the VC bundle specified as bundle-name and enters bundle configuration mode.

Applying Bundle-Level Parameters

Bundle-level parameters can be applied either by assigning VC classes or by directly applying them to the bundle.

Parameters applied through a VC class assigned to the bundle are superseded by those applied at the bundle level. Bundle-level parameters are superseded by parameters applied to an individual VC.

The following sections describe applying bundle-level parameters:

• Configuring Bundle-Level Parameters, page 28

• Configuring VC Class Parameters to Apply to a Bundle, page 29

• Attaching a VC Class to a Bundle, page 29

Configuring Bundle-Level Parameters

Configuring bundle-level parameters is optional if a class is attached to the bundle to configure it.

To configure parameters that apply to the bundle and all its members, use the following commands in bundle configuration mode, as needed:

Command Purpose

Router(config-if-atm-bundle)# protocol protocol {protocol-address | inarp} [[no] broadcast]

Router(config-if-atm-bundle)# encapsulation

aal-encap

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Configures a static map or enables Inverse Address Resolution (Inverse ARP) or Inverse ARP broadcasts for the bundle.

Configures the ATM adaptation layer (AAL) and encapsulation type for the bundle.

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How to Configure Layer 3 Terminated VCs on the 4-Port ATM ISE Line Card

Command Purpose

Router(config-if-atm-bundle)# inarp minutes

Configures the Inverse ARP time period for all VC bundle members.

Router(config-if-atm-bundle)# broadcast

Router(config-if-atm-bundle)# ilmi manage

Router(config-if-atm-bundle)# oam retry [up-count] [down-count] [retry-frequency]

Router(config-if-atm-bundle)# oam-bundle [manage] [frequency]

Enables broadcast forwarding for all VC bundle members.

Enables ILMI management.

Configures the VC bundle parameters related to OAM management.

Enables end-to-end F5 OAM loopback cell generation and OAM management for all VCs in the bundle.

Configuring VC Class Parameters to Apply to a Bundle

Use of a VC class allows you to configure a bundle by applying multiple attributes to it at one time because you apply the class itself to the bundle. Use of a VC class allows you to generalize a parameter across all VCs, after which (for some parameters) you can modify that parameter for individual VCs. (See the “Applying Parameters to Individual VCs” section on page 30 for more information.)

To configure a VC class to contain commands that configure VC members of a bundle when the class is applied to that bundle, use the following command in vc-class configuration mode. To enter vc-class configuration mode, use the vc-class atm command.

Command Purpose

Router(config-vc-class)# oam-bundle [manage] [frequency]

Enables end-to-end F5 OAM loopback cell generation and OAM management for all VCs in the bundle.

In addition to the oam-bundle command, you can add the following commands to a VC class to be used to configure a bundle: bump, precedence, mpls experimental, and protect commands. For more information about these commands, refer to the ATM VC Bundle Management on Cisco 12000 Series

8-Port OC_3 STM-1 ATM Line Cards document.

Attaching a VC Class to a Bundle

To attach a preconfigured VC class containing bundle-level configuration commands to a bundle, use the following command in bundle configuration mode:

Command Purpose

Router(config-if-atm-bundle)# class-bundle

vc-class-name

Configures a bundle with the bundle-level commands contained in the specified VC class.

Parameters set through bundle-level commands contained in the VC class are applied to the bundle and all its VC members. Bundle-level parameters applied through commands configured directly on the bundle supersede those applied through a VC class.

Note that some bundle-level parameters applied through a VC class or directly to the bundle can be superseded by commands that you directly apply to individual VCs in bundle-vc configuration mode. For more information on bundle-vc configuration mode, see “Committing a VC to a Bundle” in the following section.

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Committing a VC to a Bundle

To add a VC to an existing bundle and enter bundle-vc configuration mode, use the following command in bundle configuration mode:

Command Purpose

Router(config-if-atm-bundle)# pvc-bundle pvc-name [vpi/] [vci]

Adds the specified VC to the bundle and enters bundle-vc configuration mode to configure the specified VC bundle member.

For information on how to create a bundle and configure it, see the “Creating a VC Bundle” section on

page 28 and the “Applying Bundle-Level Parameters” section on page 28.

Applying Parameters to Individual VCs

Parameters can be applied to individual VCs either by using VC classes or by directly applying them to the bundle members.

Parameters applied to an individual VC supersede bundle-level parameters. Parameters applied directly to a VC take precedence over the same parameters applied within a class to the VC at the bundle-vc configuration level.

The following should be noted regarding parameters applied to individual VCs:

• Policing in a policy-map is performed on the aggregate traffic of the bundle. In other words, policing

is not per VC, but rather for the whole subinterface.

• MDRR defined using the bandwidth command is applied to each VC separately. In other words, the

weight of the MDRR will be relative to the traffic passing on each VC and not relative to the traffic passing on the bundle.

The following sections describe applying parameters to individual VCs:

• Configuring a VC Bundle Member Directly, page 30

• Configuring VC Class Parameters to Apply to a VC Bundle Member, page 31

• Applying a VC Class to a Discrete VC Bundle Member, page 32

• Configuring a VC Not to Accept Bumped Traffic, page 32

Configuring a VC Bundle Member Directly

Configuring VC bundle members directly is optional if a VC class is attached to the bundle member.

To configure an individual VC bundle member directly, use the following commands in bundle-vc configuration mode:

Command Purpose

Router(config-if-atm-member)# bump {implicit | explicit precedence-level | traffic}

Router(config-if-atm-member)# mpls experimental [other | range]

Router(config-if-atm-member)# precedence [other | range]

Configures the bumping rules for the VC bundle member.

Specifies which MPLS experimental bit values can be mapped to a member of a VC bundle.

Configures the precedence levels that apply to the VC bundle member.

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Command Purpose

Router(config-if-atm-member)# protect {group | vc}

Router(config-if-atm-member)# service-policy {input | output} policy-map-name

Configures the bundle member to be an individually protected VC bundle member.

Attaches a policy map to a member of a VC bundle.

Note Only one traffic policy can be applied to all VCs

belonging to the same interface.

Router(config-if-atm-member)# ubr [pcr]

Configures UBR as the traffic shaping rule for the VC, qualified by an optional peak cell rate (pcr).

Router(config-if-atm-member)# vbr-nrt pcr scr [mbs]

Configures VBR-NRT as the traffic shaping rule for the VC, qualified by peak cell rate, sustainable cell rate (scr), and optional maximum burst cell size (mbs).

Router(config-if-atm-member)# vbr-rt pcr scr [mbs]

Configures VBR-RT as the traffic shaping rule for the VC, qualified by peak cell rate, sustainable cell rate (scr), and optional maximum burst cell size (mbs).

Router(config-if-atm-member)# cbr [pcr]

Configures CBR as the traffic shaping rule for the VC, qualified by an optional peak cell rate (pcr).

Parameters set directly for a VC at the bundle-vc configuration level take precedence over values for these parameters set for the VC at any other level, including application of a VC class at the bundle-vc configuration level.

Configuring VC Class Parameters to Apply to a VC Bundle Member

To configure a VC class to contain commands that configure a specific VC member of a bundle when the class is applied to it, use the following commands in bundle-vc configuration mode, as needed. To enter vc-class configuration mode, use the vc-class atm command in global configuration mode.

Command Purpose

Router(config-vc-class)# oam-bundle [manage] [frequency]

Router(config-vc-class)# bump {implicit | explicit precedence-level | traffic}

Router(config-vc-class)# precedence [other | range]

Router(config-vc-class)# mpls experimental [other | range]

Router(config-vc-class)# protect {group | vc}

Enables end-to-end F5 OAM loopback cell generation and OAM management for all VCs in the bundle.

Configures the bumping rules for the VC.

Configures the precedence levels for the VC.

Specifies which MPLS experimental bit values for a virtual circuit (VC) class can be mapped to a member of the VC bundle.

Configures the VC either to belong to the protected group of the bundle or to be an individually protected VC bundle member.

Router(config-vc-class)# ubr [pcr]

Configures UBR as the traffic shaping rule for the VC, qualified by an optional peak cell rate (pcr).

Router(config-vc-class)# vbr-nrt pcr scr [mbs]

Configures VBR-NRT as the traffic shaping rule for the VC, qualified by peak cell rate, sustainable cell rate (scr), and optional maximum burst cell size (MBS).

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Command Purpose

Router(config-vc-class)# vbr-rt pcr scr [mbs]

Configures VBR-RT as the traffic shaping rule for the VC, qualified by peak cell rate (pcr), sustainable cell rate (scr), and optional maximum burst cell size (mbs).

Router(config-vc-class)# cbr [pcr]

Configures UBR as the traffic shaping rule for the VC, qualified by an optional peak cell rate (pcr).

Applying a VC Class to a Discrete VC Bundle Member

To attach a preconfigured VC class containing bundle-level commands to a bundle member, use the following command in bundle-vc configuration mode:

Command Purpose

Router(config-if-atm-member)# class-vc vc-class-name

Assigns a VC class to a VC bundle member.

Parameters that configure a VC that are contained in a VC class assigned to that VC are superseded by parameters that are directly configured for the VC through discrete commands entered in bundle-vc configuration mode.

Configuring a VC Not to Accept Bumped Traffic

To configure an individual VC bundle member not to accept traffic that otherwise might be directed to it if the original VC carrying the traffic goes down, use the following command in bundle-vc configuration mode:

Command Purpose

Router(config-if-atm-member)# no bump traffic

Configures the VC not to accept any bumped traffic that would otherwise be redirected to it.

VC Bundle Examples

• VC Bundle Configuration on an IP Subinterface Example, page 32

• VC Bundle Configuration Using MPLS and Service Policies Example, page 33

• VC Bundle Configuration Using a VC Class Example, page 33

• CLP Bit Setting on a Per-Experimental Basis with VC Bundling, page 34

VC Bundle Configuration on an IP Subinterface Example

This example configures a VC bundle with eight member VCs on an IP subinterface.

interface ATM5/0.2 point-to-point ip address 1.5.0.1 255.255.255.0 no ip directed-broadcast no atm enable-ilmi-trap bundle b502

pvc-bundle 1/107 precedence 7 pvc-bundle 1/106 precedence 6

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pvc-bundle 1/105 precedence 5 pvc-bundle 1/104 precedence 4 pvc-bundle 1/103 precedence 3 pvc-bundle 1/102 precedence 2 pvc-bundle 1/101 precedence 1 pvc-bundle 1/100 precedence other

VC Bundle Configuration Using MPLS and Service Policies Example

This example configures a VC bundle with three member VCs on a MPLS-enabled subinterface. Each of the bundle members has the same traffic policy attached.

interface ATM5/1.1 point-to-point ip address 1.1.2.1 255.255.255.0 no ip directed-broadcast no atm enable-ilmi-trap bundle b511

oam retry 3 5 1 oam-bundle manage pvc-bundle 1/103 service-policy out high mpls experimental 5-7 pvc-bundle 1/102 service-policy out high mpls experimental 2-4 pvc-bundle 1/101 service-policy out high

mpls experimental 0-1 ! tag-switching ip !

VC Bundle Configuration Using a VC Class Example

This example shows how to configure a VC bundle using VC classes.

interface ATM2/1.1 point-to-point

ip address 2.1.2.1 255.255.255.0

no ip directed-broadcast

no atm enable-ilmi-trap

bundle b211

pvc-bundle lab-control 0/33

class-vc control-class

pvc-bundle lab-premium 0/34

class-vc premium-class vbr-nrt 100000 100000 8000 mpls experimental 0-6

pvc-bundle lab-priority 0/35

class-vc priority-class

pvc-bundle lab-basic 0/36

class-vc basic-class ! tag-switching ip

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CLP Bit Setting on a Per-Experimental Basis with VC Bundling

CLP bit setting can be combined with VC bundling by configuring VC bundling on a group of VCs as desired, creating a policy map with CLP bit setting configured as desired, and then configuring the CLP bit setting.

This example configures VC bundling and CLP bit setting on a per-experimental basis. There are two VCs. Experimental 0 and 1 go to VC 1 with CLP on. Experimental 2 and 3 go to VC 1 with CLP off. Experimental 4 and 5 go to VC 2 with CLP on, and experimental 6 and 7 go to VC 2 with CLP off. This does not require a hierarchical policy, because there is only one queue per VC.

Note This example uses matching conditions based on the match mpls experimental command. This usage

causes CLP bits to be set based on the incoming MPLS experimental bits. You can just as easily use the IP precedence bits to do this matching instead of the MPLS experimental bits.

class-map match-any exp01

match mpls experimental 0 1

class-map match-any exp45

match mpls experimental 4 5

policy set-clp-0145

class exp01

set atm-clp

class exp45

set atm-clp

interface atm4/0.1 point-to-point

ip address 4.0.1.1 255.255.255.0 bundle my-paris2-bundle

pvc-bundle 40/1

precedence 0-3 service-policy output set-clp-0145

pvc-bundle 40/2

precedence 4-7

service-policy output set-clp-0145 ! tag-switching ip

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Troubleshooting Tips

To gather information on VC bundles so as to monitor them or to troubleshoot problems that pertain to their configuration or use, use the following commands in privileged EXEC mode, as needed:

Command Purpose

Router# show atm bundle bundle-name

Router# show atm bundle bundle-name statistics [detail]

Router# show atm map

Router# debug atm bundle adjacency events

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Displays the bundle attributes assigned to each VC bundle member and the current working status of the VC bundle members.

Displays statistics or detailed statistics on the specified VC bundle.

Displays a list of all configured ATM static maps to remote hosts on an ATM network and on ATM bundle maps.

Displays information about ATM bundle adjacency change events.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command Purpose

Router# debug atm bundle errors

Router# debug atm bundle events

Displays information on bundle errors.

Displays a record of bundle events.

Configuring Bridged PVCs

The purpose of bridged permanent virtual circuits (BPVCs) is to allow ATM interfaces in the Cisco high-end router to be used in an edge or aggregation role and connect to a Cisco Catalyst switch or to another remote device that supports bridged-format RFC 1483 PDUs only.

Note Only Ethernet frames using Ethernet v2 format are supported. IEEE 802.3 format is not supported.

To create a BPVC, perform the following steps:

Command Purpose

Step 1

Step 2

Step 3

Router(config)# interface atm 1/0.4 multipoint

Router(config-subif)# pvc 3/45

Router(config-if-atm-vc)# encapsulation

aal5snap bridge

Create a multipoint subinterface.

Create a PVC.

Configure the encapsulation type to “aal5snap bridge”.

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Note Only one bridged PVC is allowed for each ATM subinterface.

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

This section describes how to configure AToM VCs in the following tasks:

• Configuring Layer 2 AToM Virtual Circuits, page 35

• Configuring AToM VCs, page 36

• Configuring ATM Shaping on AToM VCs, page 49

• Configuring Cell-Based Traffic Policing on AToM VCs, page 63

• Configuring Experimental Mapping, page 73

Configuring Layer 2 AToM Virtual Circuits

A virtual circuit (VC) is a point-to-point connection between two ATM devices. A VC is established for each ATM end node with which the router communicates. Permanent virtual circuits (PVCs) configured on the router remain active until the circuit is removed from the configuration. All virtual circuit characteristics apply to PVCs. When a PVC is configured, all configuration options are passed to the 4-Port ATM ISE line card. These PVCs are written to the nonvolatile RAM (NVRAM) as part of the configuration and are used when the Cisco IOS image is reloaded.

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A permanent virtual path (PVP) is like a bundle of VCs, transporting all cells with a common VPI, rather than a specific VPI and VCI.

PVCs are created and configured using the pvc command in interface configuration mode. PVPs are created and configured using the atm pvp command in interface configuration mode.

The syntax of the pvc command is as follows:

pvc [name] vpi/vci l2transport

The syntax of the atm pvp command is:

atm pvp vpi l2transport

vpi is the ATM network VPI to use for this virtual circuit, in the range of 0 to 255 for UNI or 0 to 4095

for NNI; vci is the ATM network VCI to use for this virtual circuit, in the range of 0 to 655,535.

The l2transport keyword indicates that the PVP or PVC is a switched PVP/PVC and not terminated. Once you enter this command, you enter l2transport submode.

Troubleshooting Tips

To display information about the connected virtual circuits, use the following commands:

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command Purpose

Router# show atm pvc

Router# show atm vc

Displays current ATM PVC information.

Displays current ATM VC information.

Configuring AToM VCs

Any Transport over MPLS (AToM) encapsulates Layer 2 frames at the ingress PE and sends them to a corresponding PE at the other end of a pseudowire, which is a connection between the two PE routers. The egress PE removes the encapsulation and sends out the Layer 2 frame.

The successful transmission of the Layer 2 frames between PE routers is due to the configuration of the PE routers. You set up the connection, called a pseudowire, between the routers.

The 4-Port ATM ISE line cards provide a number of configuration options for ATM over MPLS:

• AAL5: Encapsulates ATM AAL5 service data units (SDUs) in MPLS packets and forwards them

across the MPLS network. Each ATM AAL5 SDU is transported as a single packet.

–

Configuring ATM AAL5 over MPLS, page 37

• Cell relay in either VC or VP mode: Allows cells coming into a predefined PVC or PVP on the ATM

interface to be transported over the MPLS backbone to a predefined PVC or PVP on the egress ATM interface. You can use cell relay mode to send single cells or packed cells over the MPLS backbone.

–

Configuring ATM Cell Relay over MPLS on PVCs, page 38

–

Configuring ATM Cell Relay over MPLS on PVPs, page 40

• Cell relay in port mode: Allows a single cell coming into an ATM interface to be packed into an

MPLS packet and transported over the MPLS backbone to an egress ATM interface.

–

Configuring ATM Cell Relay over MPLS on a Port, page 41

• Packed cell relay in either VP, VC, or port mode: Allows you to insert multiple concatenated ATM

cells in an MPLS packet. The packed cell relay feature is more efficient than single cell relay, because each ATM cell is 52 bytes, and each AToM packet is at least 64 bytes.

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–

Configuring ATM Cell Packing over MPLS on PVCs, page 42

–

Configuring ATM Cell Packing over MPLS on PVPs, page 44

–

Configuring ATM Cell Packing over MPLS on a Port, page 45

• OAM Emulation: Allows for sending a remote defect indication (RDI) in response to an alarm

indication signal (AIS) without passing it along the MPLS network to the egress provider edge (PE). It also allows for sending F5 loopback cells of loopback point (with loopback indication equal to 0) in response to F5 loopback cells of source point (with loopback indication equal to 1) without passing them along the MPLS network to the egress PE. In addition, it drops F5 continuity check cells without passing them along the MPLS network to the egress PE.

–

Configuring OAM Emulation on AToM VCs, page 47

Prerequisites

Before configuring AToM, ensure that the network is configured as follows:

• Configure IP routing in the core so that the PE routers can reach each other via IP.

• Configure MPLS in the core so that a label switched path (LSP) exists between the PE routers.

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

• Configure a loopback interface for originating and terminating Layer 2 traffic. Make sure the PE

routers can access the other router’s loopback interface.

Configuring ATM AAL5 over MPLS

ATM AAL5 over MPLS encapsulates ATM AAL5 SDUs in MPLS packets and forwards them across the MPLS network. Each ATM AAL5 SDU is transported as a single packet. Perform this task to enable ATM AAL5 over MPLS.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface atmslot/port

4. pvc vpi/vci l2transport

5. encapsulation aal5

6. xconnect peer-router-id vcid encapsulation mpls

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DETAILED STEPS

Command Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 4

pvc vpi/vci l2transport

Example:

Router(config-if)# pvc 1/200 l2transport

Step 5

encapsulation aal5

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies an ATM interface.

Assigns a virtual path identifier (VPI) and virtual circuit identifier (VCI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

Specifies ATM AAL5 encapsulation for the PVC. Make sure you specify the same encapsulation type on the PE and CE routers.

Example:

Router(config-atm-l2trans-pvc)# encapsulation aal5

Step 6

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Example

Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# pvc 1/200 l2transport Router(config-atm-l2trans-pvc)# encapsulation aal5 Router(config-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls

Configuring ATM Cell Relay over MPLS on PVCs

Perform this task to configure ATM Cell Relay on permanent virtual circuits (PVCs).

Restrictions

Binds the attachment circuit to a pseudowire VC.

The cell relay function can only be configured when the ATM VC is configured for AAL0 encapsulation. It has no meaning if the VC is configured with AAL5 encapsulation.

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SUMMARY STEPS

1. enable

2. configure terminal

3. interface atmslot/port

4. pvc vpi/vci l2transport

5. encapsulation aal0

6. xconnect peer-router-id vcid encapsulation mpls

DETAILED STEPS

Command Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Step 3

Step 4

Step 5

Step 6

Example:

Router# configure terminal

interface atmslot/port

Example:

Router(config)# interface atm1/0

pvc vpi/vci l2transport

Example:

Router(config-if)# pvc 0/100 l2transport

encapsulation aal0

Example:

Router(config-atm-l2trans-pvc)# encapsulation aal0

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Specifies an ATM interface.

Assigns a VPI and VCI. The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

For ATM Cell Relay, this command specifies raw cell encapsulation for the interface. Make sure you specify the same encapsulation type on the PE and CE routers.

Binds the attachment circuit to a pseudowire VC or VP.

Example

Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# pvc 0/100 l2transport Router(config-atm-l2trans-pvc)# encapsulation aal0

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Router(config-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls

Configuring ATM Cell Relay over MPLS on PVPs

Perform this task to configure ATM Cell Relay on permanent virtual paths (PVPs).

Restrictions

The cell relay function can only be configured when the ATM VP is configured for AAL0 encapsulation. It has no meaning if the VP is configured with AAL5 encapsulation.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface atmslot/port

4. atm pvp vpi l2transport

5. xconnect peer-router-id vcid encapsulation mpls

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 4

atm pvp vpi l2transport

Example:

Router(config-if)# atm pvp vpi 1 l2transport

Step 5

xconnect peer-router-id vcid encapsulation mpls

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies an ATM interface.

Specifies that the PVP is dedicated to transporting ATM cells. The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

Binds the attachment circuit to a pseudowire VC or VP.

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

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Example

Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# atm pvp vpi 1 l2transport Router(config-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls

Configuring ATM Cell Relay over MPLS on a Port

Port mode cell relay allows a single cell coming into an ATM interface to be packed into an MPLS packet and transported over the MPLS backbone to an egress ATM interface.

To configure port mode, you issue the xconnect command from an ATM main interface and specify the destination address and the VC ID. The syntax and semantics of the xconnect command are the same as for all other transport types. Each ATM port is associated with one unique pseudowire VC label.

Perform this task to transport ATM over MPLS in port mode:

Restrictions

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

SUMMARY STEPS

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

The cell relay function can only be configured when the ATM interface is configured for AAL0 encapsulation. It has no meaning if the interface is configured with AAL5 encapsulation.

1. enable

2. configure terminal

3. interface atmslot/port

4. xconnect peer-router-id vcid encapsulation mpls

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

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Command or Action Purpose

Step 3

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 4

xconnect peer-router-id vcid encapsulation mpls

Router(config-if)# xconnect 10.0.0.1 123 encapsulation mpls

Example

Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# xconnect 10.0.0.1 123 encapsulation mpls

Configuring ATM Cell Packing over MPLS on PVCs

Specifies an ATM interface.

Binds the attachment circuit to the interface.

Restrictions

SUMMARY STEPS

Perform this task to configure ATM cell packing on permanent virtual circuits (PVCs).

• The cell packing function can only be configured when the ATM VC is configured for AAL0

encapsulation. It has no meaning if the VC is configured with AAL5 encapsulation.

• In cell packing, only cells from the same VC/VP can be packed into one MPLS packet. Cells from

different connections cannot be concatenated into the same MPLS packet.

• The number of cells that can be packed varies from 2 to 28.

1. enable

2. configure terminal

3. interface atmslot/port

4. atm mcpt-timers [timer1-timeout timer2-timeout timer3-timeout]

5. pvc vpi/vci l2transport

6. encapsulation aal0

7. cell-packing cells mcpt-timer timer

8. xconnect peer-router-id vcid encapsulation mpls

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 4

atm mcpt-timers [timer1-timeout timer2-timeout timer3-timeout]

Example:

Router(config-if)# atm mcpt-timers 100 200 1000

Step 5

pvc vpi/vci l2transport

Example:

Router(config-if)# pvc 0/100 l2transport

Step 6

encapsulation aal0

Example:

Router(config-atm-l2trans-pvc)# encapsulation aal0

Step 7

cell-packing cells mcpt-timer timer

Example:

Router(config-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1

Step 8

xconnect peer-router-id vcid encapsulation mpls

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies an ATM interface.

Sets up the cell-packing timers, which specify how long the PE router can wait for cells to be packed into an MPLS packet.

You can set up to three timers. For each timer, you specify the maximum cell packing timeout (MCPT). This value gives the cell packing function a limited amount of time to complete. If the timer expires before the maximum number of cells are packed into an AToM packet, the packet is sent anyway. The range of acceptable values is from 2 to 4095.

Assigns a virtual path identifier (VPI) and virtual circuit identifier (VCI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

For ATM Cell Relay, this command specifies raw cell encapsulation for the interface. Make sure you specify the same encapsulation type on the PE and CE routers.

Enables cell packing and specifies the cell packing parameters.

The cells value represents the maximum number of cells to be packed into an MPLS packet. The range is from 2 to 28.

The timer value allows you to specify which timer to use.

Binds the attachment circuit to a pseudowire VC.

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Example

Router> enable

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# atm mcpt-timers 100 200 1000 Router(config-if)# pvc 0/100 l2transport Router(config-atm-l2trans-pvc)# encapsulation aal0 Router(config-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1 Router(config-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls

Configuring ATM Cell Packing over MPLS on PVPs

Perform this task to configure ATM cell packing on permanent virtual paths (PVPs).

Restrictions

• The cell packing function can only be configured when the ATM VP is configured for AAL0

encapsulation. It has no meaning if the VP is configured with AAL5 encapsulation.

• In cell packing, only cells from the same VC/VP can be packed into one MPLS packet. Cells from

different connections cannot be concatenated into the same MPLS packet

• The number of cells that can be packed varies from 2 to 28.

SUMMARY STEPS

DETAILED STEPS

Command Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

interface atmslot/port

1. enable

2. configure terminal

3. interface atmslot/port

4. atm mcpt-timers [timer1-timeout timer2-timeout timer3-timeout]

5. atm pvp vpi l2transport

6. cell-packing cells mcpt-timer timer

7. xconnect peer-router-id vcid encapsulation mpls

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies an ATM interface.

Example:

Router(config)# interface atm1/0

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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command Purpose

Step 4

atm mcpt-timers [timer1-timeout timer2-timeout timer3-timeout]

Sets up the cell-packing timers, which specify how long the PE router can wait for cells to be packed into an MPLS packet.

You can set up to three timers. For each timer, you specify the

Example:

Router(config-if)# atm mcpt-timers 100 200 1000

maximum cell packing timeout (MCPT). This value gives the cell packing function a limited amount of time to complete. If the timer expires before the maximum number of cells are packed into an AToM packet, the packet is sent anyway. The range of values is from 2 to 4095.

Step 5

atm pvp vpi l2transport

Specifies that the PVP is dedicated to transporting ATM cells. The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

Enables cell packing and specifies the cell packing parameters.

Step 6

Example:

Router(config-if)# atm pvp vpi 1 l2transport

cell-packing cells mcpt-timer timer

The cells value represents the maximum number of cells to be packed into an MPLS packet. The range is from 2 to 28.

The timer value allows you to specify which timer to use.

Binds the attachment circuit to a pseudowire VC or VP.

Step 7

Example:

Router(cfg-if-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1

xconnect peer-router-id vcid encapsulation mpls

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Example:

Router(cfg-if-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Example

Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# atm mcpt-timers 100 200 1000 Router(config-if)# atm pvp vpi 1 l2transport Router(cfg-if-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1 Router(cfg-if-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls

Configuring ATM Cell Packing over MPLS on a Port

Port mode cell packing allows multiple cells coming into an ATM interface to be packed into an MPLS packet and transported over the MPLS backbone to an egress ATM interface.

Perform this task to configure cell packing ATM over MPLS in port mode.

Restrictions

• In cell packing, only cells from the same VC/VP can be packed into one MPLS packet. Cells from

different connections cannot be concatenated into the same MPLS packet

Cisco IOS Release 12.0(27)S

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

• The number of cells that can be packed varies from 2 to 28.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface atmslot/port

4. no ip address

5. no ip directed-broadcast

6. atm clock internal

7. atm mcpt-timers [timer1-timeout timer2-timeout timer3-timeout]

8. no atm enable-ilmi-trap

9. no atm ilmi-keepalive

10. cell-packing cells mcpt-timer timer

11. xconnect

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 4

Step 5

Step 6

no ip address

no ip directed-broadcast

atm clock internal

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies an ATM interface.

Disables IP processing.

Disables translation of a directed broadcast to physical broadcasts.

Causes the ATM interface to generate the transmit clock internally.

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Command or Action Purpose

Step 7

atm mcpt-timers [timer1-timeout timer2-timeout timer3-timeout]

Example:

Router(config-if)# atm mcpt-timers 100 200 1000

Step 8

Step 9

Step 10

no atm enable-ilmi-trap

no atm ilmi-keepalive

cell-packing cells mcpt-timer timer

Example:

Router(config-if)# cell-packing 10 mcpt-timer 1

Step 11

xconnect peer-router-id vcid encapsulation mpls

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Sets up the cell-packing timers, which specify how long the PE router can wait for cells to be packed into an MPLS packet.

Disables ILMI traps.

Disables ILMI keepalives.

Enables cell packing and specifies the cell packing parameters.

The cells value represents the maximum number of cells to be packed into an MPLS packet. The range is from 2 to 28.

The timer value allows you to specify which timer to use.

Binds the attachment circuit to a pseudowire VC or VP.

Example:

Router(config-if)# xconnect 13.13.13.13 100 encapsulation mpls

Example

Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# no ip address Router(config-if)# no ip directed-broadcast Router(config-if)# atm clock internal Router(config-if)# atm mcpt-timers 100 200 1000 Router(config-if)# no atm enable-ilmi-trap Router(config-if)# no atm ilmi-keepalive Router(config-if)# cell-packing 10 mcpt-timer 1

Configuring OAM Emulation on AToM VCs

If Operation, Administration, and Maintenance (OAM) Emulation is not configured, the OAM method is set to transparent pass-through on AToM VCs. OAM Emulation provides the ability to send a remote defect indication (RDI) in response to an alarm indication signal (AIS) without passing it along the MPLS network to the egress PE. It also allows for sending F5 loopback cells of loopback point (with loopback indication equal to 0) in response to F5 loopback cells of source point (with loopback indication equal to 1) without passing them along the MPLS network to the egress PE. In addition, it drops F5 continuity check cells without passing them along the MPLS network to the egress PE.

Restrictions

OAM Emulation can be enabled only on an AAL5 VC.

Cisco IOS Release 12.0(27)S

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

SUMMARY STEPS

1. enable

2. configure terminal

3. interface atmslot/port

4. pvc vpi/vci l2transport

5. encapsulation aal5

6. oam emulation-enable

7. oam-pvc manage [frequency]

8. xconnect peer-router-id vcid encapsulation mpls

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Example:

Router# configure terminal

interface atmslot/port

Example:

Router(config)# interface atm1/0

pvc [name] vpi/vci l2transport

Example:

Router(config-if)# pvc 10/50 l2transport

encapsulation aal5

oam emulation-enable

oam-pvc manage [frequency]

Example:

Router(config-if-l2trans-pvc)# oam-pvc manage 0

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Specifies an ATM interface to configure.

Specifies a PVC with the specified VPI and virtual circuit identifier (VCI) to configure.

Sets encapsulation to be AAL5.

Enables OAM emulation.

Enables end-to-end F5 OAM loopback cell generation and OAM management for an ATM PVC or VC. Frequency is the time delay (0 to 600 seconds) between transmitting OAM loopback cells.

Binds the attachment circuit to a pseudowire VC.

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Note OAM Emulation should be configured at both ends of the VC.

Example

Router> enable Router# configure terminal Router(config)# interface atm1/0 Router(config-if)# pvc 10/50 l2transport Router(config-if-l2trans-pvc)# encapsulation aal5 Router(config-if-l2trans-pvc)# oam emulation-enable Router(config-if-l2trans-pvc)# oam-pvc manage 0 Router(config-atm-l2trans-pvc)# xconnect 13.13.13.13 100 encapsulation mpls

Troubleshooting Tips

To troubleshoot AToM VCs, use the following commands:

Command Purpose

Router# show mpls l2transport vc

Router# show mpls l2transport vc detail

Displays information about AToM VCs that have been enabled to route Layer 2 packets on the router.

Displays detailed information about the VCs that have been assigned VC IDs.

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Configuring ATM Shaping on AToM VCs

The 4-Port ATM ISE line cards support both VP and VC traffic shaping for AToM. The following ATM shaping options are available:

• Constant bit rate (CBR)—Supports real-time applications that request a static amount of bandwidth

that is continuously available for the duration of the connection. Use the command cbr pcr.

• Real-time variable bit rate (VBR-rt)—Supports real-time applications that have bursty transmission

characteristics. Use the command vbr-rt pcr scr.

• Non-real time variable bit rate (VBR-nrt)—Supports non-real-time applications with bursty

transmission characteristics that tolerate high cell delay, but require low cell loss. Use the command vbr-nrt pcr scr.

• Unspecified bit rate (UBR)—Supports non-real-time applications that tolerate both high cell delay

and cell loss on the network. There are no network service-level guarantees for the UBR service category, and therefore it is a best-effort service. Use the command ubr pcr.

The following tasks illustrate how to configure the ATM shaping queue size and traffic shaping for CBR, UBR, VBR-rt and VBR-nrt classes of service on AToM VCs and VP tunnels in various transport modes.

• Configuring Cell Relay over MPLS on PVCs, page 50

• Configuring Cell Relay over MPLS on PVPs, page 52

• Configuring Cell Packing over MPLS on PVCs, page 55

• Configuring Cell Packing over MPLS on PVPs, page 57

• Configuring AAL5 over MPLS on PVCs, page 60

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How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Restrictions

Table 6 CDVT per Traffic Class for Traffic Shaping

Traffic Class OC-12c/STM-4c Line Card OC-3c/STM-1 Line Card

CBR 70 μsec 70 μsec

UBR 185 μsec 300 μsec

VBR-RT 70 μsec 70 μsec

VBR-NRT 185 μsec 300 μsec

Note For VBR connections in which the SCR is not equal to the PCR value, the CDVT is significantly lower.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Configuring Cell Relay over MPLS on PVCs

This task illustrates the configuration of CBR traffic shaping in cell relay over MPLS VC mode.

SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map policy-map-name

4. class class-default

5. queue-limit number-of-cells cells

6. exit

7. exit

8. interface atmslot/port

9. atm clock internal

10. pvc vpi/vci l2transport

11. encapsulation aal0

12. cbr pcr

13. service-policy output policy-map-name

14. xconnect peer-router-id vcid encapsulation mpls

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

policy-map policy-map-name

Example:

Router(config)# policy-map out_cbr

Step 4

class class-default

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the name of the service policy to configure with the shaping queue size.

Specifies to configure the default class.

Step 5

Step 6

Step 7

Step 8

Step 9

Step 10

Example:

Router(config-pmap)# class class-default

queue-limit number-of-cells cells

Example:

Router(config-pmap-c)# queue-limit 200 cells

exit

Example:

Router(config-pmap-c)# exit

exit

Example:

Router(config-pmap)# exit

interface atmslot/port

Example:

Router(config)# interface atm1/0

atm clock internal

Example:

Router(config)# atm clock internal

pvc [name] vpi/vci l2transport

Example:

Router(config-if)# pvc 21/21 l2transport

Specifies or modifies the maximum number of cells the queue can hold for a class policy configured in a policy map.

Exits class mode.

Exits policy-map mode.

Specifies an ATM interface or subinterface to configure.

Causes the ATM interface to generate the transmit clock internally.

Specifies a PVC with the specified VPI and virtual circuit identifier (VCI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

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How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Command or Action Purpose

Step 11

encapsulation aal0

Example:

Router(config-atm-l2trans-pvc)# encapsulation aal0

Step 12

cbr pcr

Router(cfg-if-atm-l2trans-pvc)# cbr 1000

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

For ATM Cell Relay, this command specifies raw cell encapsulation for the interface. Make sure you specify the same encapsulation type on the PE and CE routers.

Specifies CBR shaping.

The pcr value indicates the peak cell rate. The range is from 38 to 622,000 Kbps.

Note In place of the cbr command, you can use the ubr,

vbr-rt, or vbr-nrt commands to configure UBR,

VBR-rt, or VBR-nrt shaping in the same way.

Step 13

Step 14

Example

service-policy output policy-map-name

Example:

Router(config-pmap-c)# service-policy output out_cbr

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Router> enable Router# configure terminal Router(config)# policy-map out_cbr Router(config-pmap)# class class-default Router(config-pmap-c)# queue-limit 200 cells Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# interface atm1/0 Router(config)# atm clock internal Router(config-if)# pvc 21/21 l2transport Router(config-atm-l2trans-pvc)# encapsulation aal0 Router(cfg-if-atm-l2trans-pvc)# cbr 1000 Router(config-pmap-c)# service-policy output out_cbr Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Attaches the queue-limit service policy to the PVC.

Binds the attachment circuit to a pseudowire VC.

Configuring Cell Relay over MPLS on PVPs

This task illustrates the configuration of UBR traffic shaping in cell relay over MPLS in VP mode.

SUMMARY STEPS

1. enable

2. configure terminal

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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

3. policy-map policy-map-name

4. class class-default

5. queue-limit number-of-cells cells

6. exit

7. exit

8. interface atmslot/port

9. atm clock internal

10. atm pvp vpi l2transport

11. ubr pcr

12. service-policy output policy-map-name

13. xconnect peer-router-id vcid encapsulation mpls

DETAILED STEPS

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Command or Action Purpose

enable

Enables privileged EXEC mode.

• Enter your password if prompted.

Example:

Router> enable

configure terminal

Enters global configuration mode.

Example:

Router# configure terminal

policy-map policy-map-name

Specifies the name of the service policy to configure with the shaping queue size.

Example:

Router(config)# policy-map out_ubr

class class-default

Specifies to configure the default class.

Example:

Router(config-pmap)# class class-default

queue-limit number-of-cells cells

Specifies or modifies the maximum number of cells the queue can hold for a class policy configured in a policy

Example:

Router(config-pmap-c)# queue-limit 100 cells

exit

map.

Exits class mode.

Example:

Router(config-pmap-c)# exit

Step 7

exit

Example:

Router(config-pmap)# exit

Exits policy-map mode.

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How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Command or Action Purpose

Step 8

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 9

atm clock internal

Example:

Router(config)# atm clock internal

Step 10

atm pvp vpi l2transport

Example:

Router(config-if)# atm pvp 100 l2transport

Step 11

ubr pcr

Example:

Router(config-if-vc)# ubr 2000

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies an ATM interface or subinterface to configure.

Causes the ATM interface to generate the transmit clock internally.

Specifies a PVP with the specified virtual path identifier (VPI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

Specifies UBR shaping.

The pcr value indicates the peak cell rate and its range is from 38 to 622,000 Kbps.

Step 12

Step 13

Example

service-policy output policy-map-name

Example:

Router(config-pmap-c)# service-policy output out_ubr

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Router> enable Router# configure terminal Router(config)# policy-map out_ubr Router(config-pmap)# class class-default Router(config-pmap-c)# queue-limit 100 cells Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# interface atm1/0 Router(config)# atm clock internal Router(config-if)# atm pvp 100 l2transport Router(config-if-vc)# ubr 2000 Router(config-pmap-c)# service-policy output out_ubr Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Note In place of the ubr command, you can use the cbr,

vbr-rt, or vbr-nrt commands to configure CBR,

VBR-rt, or VBR-nrt shaping in the same way.

Attaches the queue-limit service policy to the PVC.

Binds the attachment circuit to a pseudowire VC.

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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Configuring Cell Packing over MPLS on PVCs

This task illustrates the configuration of VBR-RT traffic shaping in cell packing over MPLS VC mode.

SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map policy-map-name

4. class class-default

5. queue-limit number-of-cells cells

6. exit

7. exit

8. interface atmslot/port

9. atm clock internal

10. atm mcpt-timers timer1-timeout timer2-timeout timer3-timeout

11. pvc vpi/vci l2transport

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

policy-map policy-map-name

Example:

Router(config)# policy-map out_vbr-rt

Step 4

class class-default

12. encapsulation aal0

13. cell-packing cells mcpt-timer timer

14. vbr-rt pcr scr burst

15. service-policy output policy-map-name

16. xconnect peer-router-id vcid encapsulation mpls

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the name of the service policy to configure with the shaping queue size.

Specifies to configure the default class.

Example:

Router(config-pmap)# class class-default

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How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Command or Action Purpose

Step 5

queue-limit number-of-cells cells

Example:

Router(config-pmap-c)# queue-limit 300 cells

Step 6

exit

Example:

Router(config-pmap-c)# exit

Step 7

exit

Example:

Router(config-pmap)# exit

Step 8

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 9

atm clock internal

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies or modifies the maximum number of cells the queue can hold for a class policy configured in a policy map.

Exits class mode.

Exits policy-map mode.

Specifies an ATM interface or subinterface to configure.

Causes the ATM interface to generate the transmit clock internally.

Step 10

Step 11

Step 12

Step 13

Example:

Router(config)# atm clock internal

atm mcpt-timers [timer1-timeout timer2-timeout timer3-timeout]

Example:

Router(config-if)# atm mcpt-timers 100 1000 5000

pvc [name] vpi/vci l2transport

Example:

Router(config-if)# pvc 21/21 l2transport

encapsulation aal0

Example:

Router(config-atm-l2trans-pvc)# encapsulation aal0

cell-packing cells mcpt-timer timer

Sets up the cell-packing timers, which specify how long the PE router can wait for cells to be packed into an MPLS packet.

Specifies a PVC with the specified VPI and virtual circuit identifier (VCI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

For ATM Cell Relay, this command specifies raw cell encapsulation for the interface. Make sure you specify the same encapsulation type on the PE and CE routers.

Enables cell packing and specifies the cell packing parameters.

Example:

Router(config-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1

Cisco IOS Release 12.0(27)S

The cells value represents the maximum number of cells to be packed into an MPLS packet. The range is from 2 to 28.

The timer value allows you to specify which timer to use.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command or Action Purpose

Step 14

vbr-rt pcr scr burst

Example:

Router(config-if-vc)# vbr-rt 2000 1000 100

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Specifies VBR-rt shaping.

The pcr value indicates the peak cell rate, and its range is from 38 to 622000 Kbps. The scr value indicates the sustainable cell rate, and its range is from 38 to pcr Kbps. The burst value indicates the burst size, in number of cells.

Note In place of the vbr-rt command, you can use the

ubr, cbr, or vbr-nrt commands to configure UBR,

CBR, or VBR-nrt shaping in the same way.

Step 15

Step 16

Example

service-policy output policy-map-name

Example:

Router(config-pmap-c)# service-policy output out_vbr-rt

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Router> enable Router# configure terminal Router(config)# policy-map out_vbr-rt Router(config-pmap)# class class-default Router(config-pmap-c)# queue-limit 300 cells Router(config-pmap-c)# exit Router(config-pmap)# exit Router(config)# interface atm1/0 Router(config)# atm clock internal Router(config-if)# atm mcpt-timers 100 1000 5000 Router(config-if)# pvc 21/21 l2transport Router(config-atm-l2trans-pvc)# encapsulation aal0 Router(config-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1 Router(config-if-vc)# vbr-rt 2000 1000 100 Router(config-pmap-c)# service-policy output out_vbr-rt Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Attaches the queue-limit service policy to the PVC.

Binds the attachment circuit to a pseudowire VC.

Configuring Cell Packing over MPLS on PVPs

The following task illustrates the configuration of VBR-NRT traffic shaping in cell packing over MPLS in VP mode:

SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map policy-map-name

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4. class class-default

5. queue-limit number-of-cells cells

6. exit

7. exit

8. interface atmslot/port

9. atm clock internal

10. atm pvp vpi l2transport

11. cell-packing cells mcpt-timer timer

12. vbr-nrt pcr scr mbs

13. service-policy output policy-map-name

14. xconnect peer-router-id vcid encapsulation mpls

DETAILED STEPS

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Command or Action Purpose

enable

Enables privileged EXEC mode.

• Enter your password if prompted.

Example:

Router> enable

configure terminal

Enters global configuration mode.

Example:

Router# configure terminal

policy-map policy-map-name

Specifies the name of the service policy to configure with the shaping queue size.

Example:

Router(config)# policy-map out_vbr-nrt

class class-default

Specifies to configure the default class.

Example:

Router(config-pmap)# class class-default

queue-limit number-of-cells cells

Specifies or modifies the maximum number of cells the queue can hold for a class policy configured in a policy

Example:

Router(config-pmap-c)# queue-limit 400 cells

exit

map.

Exits class mode.

Example:

Router(config-pmap-c)# exit

Step 7

exit

Example:

Router(config-pmap)# exit

Cisco IOS Release 12.0(27)S

Exits policy-map mode.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command or Action Purpose

Step 8

interface atmslot/port

Example:

Router(config)# interface atm1/0

Step 9

atm clock internal

Example:

Router(config)# atm clock internal

Step 10

atm pvp vpi l2transport

Example:

Router(config-if)# atm pvp 100 l2transport

Step 11

cell-packing cells mcpt-timer timer

Example:

Router(config-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1

Step 12

vbr-nrt pcr scr mbs

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Specifies an ATM interface or subinterface to configure.

Causes the ATM interface to generate the transmit clock internally.

Specifies a PVP with the specified virtual path identifier (VPI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

Enables cell packing and specifies the cell packing parameters.

The cells value represents the maximum number of cells to be packed into an MPLS packet. The range is from 2 to 28.

The timer value allows you to specify which timer to use.

Specifies VBR-nrt shaping.

Step 13

Step 14

Example

Example:

Router(config-if-vc)# vbr-nrt 3000 2000 200

service-policy output policy-map-name

Example:

Router(config-pmap-c)# service-policy output out_vbr-nrt

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

The pcr value indicates the peak cell rate, and its range is from 38 to 622000 Kbps. The scr value indicates the sustainable cell rate, and its range is from 38 to pcr Kbps. The mbs value indicates the maximum burst cell size, in number of cells.

Note In place of the vbr-nt command, you can use the

cbr, vbr-rt, or ubr commands to configure CBR,

VBR-rt, or UBR shaping in the same way.

Attaches the queue-limit service policy to the PVC.

Binds the attachment circuit to a pseudowire VC.

Router> enable Router# configure terminal Router(config)# policy-map out_vbr-nrt Router(config-pmap)# class class-default Router(config-pmap-c)# queue-limit 400 cells Router(config-pmap-c)# exit

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Router(config-pmap)# exit Router(config)# interface atm1/0 Router(config)# atm clock internal Router(config-if)# atm pvp 100 l2transport Router(config-atm-l2trans-pvc)# cell-packing 10 mcpt-timer 1 Router(config-if-vc)# vbr-nrt 3000 2000 200 Router(config-pmap-c)# service-policy output out_vbr-nrt Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Configuring AAL5 over MPLS on PVCs

This task illustrates the configuration of VBR-RT traffic shaping in AAL5 over MPLS VC mode.

SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map policy-map-name

4. class class-default

5. queue-limit number-of-cells cells

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

6. exit

7. exit

8. interface atmslot/port

9. atm clock internal

10. pvc vpi/vci l2transport

11. encapsulation aal5

12. vbr-rt pcr scr burst

13. service-policy output policy-map-name

14. xconnect peer-router-id vcid encapsulation mpls

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Example:

Router# configure terminal

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Command or Action Purpose

Step 3

policy-map policy-map-name

Example:

Router(config)# policy-map out_vbr-rt

Step 4

class class-default

Example:

Router(config-pmap)# class class-default

Step 5

queue-limit number-of-cells cells

Example:

Router(config-pmap-c)# queue-limit 500 cells

Step 6

exit

Example:

Router(config-pmap-c)# exit

Step 7

exit

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Specifies the name of the service policy to configure with the shaping queue size.

Specifies to configure the default class.

Specifies or modifies the maximum number of cells the queue can hold for a class policy configured in a policy map.

Exits class mode.

Exits policy-map mode.

Step 8

Step 9

Step 10

Step 11

Example:

Router(config-pmap)# exit

interface atmslot/port

Example:

Router(config)# interface atm1/0

atm clock internal

Example:

Router(config)# atm clock internal

pvc [name] vpi/vci l2transport

Example:

Router(config-if)# pvc 21/21 l2transport

encapsulation aal5

Example:

Router(config-atm-l2trans-pvc)# encapsulation aal5

Specifies an ATM interface or subinterface to configure.

Causes the ATM interface to generate the transmit clock internally.

Specifies a PVC with the specified VPI and virtual circuit identifier (VCI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

Specifies ATM AAL5 encapsulation for the PVC. Make sure you specify the same encapsulation type on the PE and CE routers.

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Command or Action Purpose

Step 12

vbr-rt pcr scr burst

Example:

Router(config-if-vc)# vbr-rt 10000 8000 256

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies VBR-rt shaping.

Note In place of the vbr-rt command, you can use the

ubr, cbr, or vbr-nrt commands to configure UBR,

CBR, or VBR-nrt shaping in the same way.

Step 13

service-policy output policy-map-name

Example:

Router(config-pmap-c)# service-policy output out_vbr-rt

Step 14

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-vc)# xconnect 2.2.2.2. 121 encapsulation mpls

Example

Router> enable Router# configure terminal Router(config)# policy-map out_vbr-rt

Troubleshooting Tips

Use the following show commands to display the cell relay and cell packing counters for troubleshooting purposes:

Command Purpose

Router# show atm pvp

Router# show atm pvc

Router# show atm cell-packing

Router# show interface atmslot/port

Router# show mpls l2transport vc detail

Router# show tag alpha-atom atm port port-no vcid

vcid

Displays information about configured PVPs.

Displays information about configured PVCs.

Displays the cell-packing counters.

Displays ATM error counters for a particular interface.

Displays the status of any configured VCs. This command can be run on the RP or the line card (by using the exec slot command).

Verifies the status of the AToM connection. You should use this to debug whether traffic entered a particular connection and was switched by the alpha. The vcid specified here is not the RP VC ID, but rather the line card CONN ID, which you can determine by running the command show controller atm 0 vcc.

Attaches the queue-limit service policy to the PVC.

Binds the attachment circuit to a pseudowire VC.

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How to Configure AToM VCs on the 4-Port ATM ISE Line Card

See the “Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card” section on page 76 for more information on the output from these commands.

Configuring Cell-Based Traffic Policing on AToM VCs

Traffic policing is configured using the Modular QoS CLI. In order to configure traffic policing, you need to do the following:

• Define a traffic class to classify the traffic (See the “Defining a Traffic Class” section on page 84 for

more detailed information.)

• Create a traffic policy with QoS features that determine how to treat classified traffic

• Attach the traffic policy to a PVC

For Layer 2 traffic, you can configure traffic policies that will guarantee a particular quality of service (QoS) traffic class. This is done using the police rate command in policy-map class configuration mode.

The supported policing configurations are shown in Tab l e 7.

Table 7 Supported Policing Configurations

Conformance Definition GCRA1 PCR Flow

Action GCRA SCR Flow Action

CBR CLP(0+1) Discard N/A N/A

VBR.1 CLP(0+1) Discard CLP(0+1) Discard

VBR.2 CLP(0+1) Discard CLP(0) Discard

VBR.3 CLP(0+1) Discard CLP(0) Tagging

UBR.1 CLP(0+1) Discard N/A N/A

1. GCRA=Generic Cell Rate Algorithm

If single-bucket policing is used, there is a single policy definition using the rate and burst tolerance parameters. For a two-bucket policer, the rate and burst tolerance are taken from the parent policy, and the SCR and ATM maximum burst size (MBS) values are taken from the child policy.

This section describes some of the most common tasks that are necessary to configure QoS traffic policing on AToM VCs. For more detailed information regarding MQC, see the “Configuring Modular

QoS CLI” section on page 84.

• Configuring CBR or UBR.1 Policing, page 64

• Configuring VBR.1 Policing, page 65

• Configuring VBR.2 Policing, page 67

• Configuring VBR.3 Policing, page 69

• Attaching a Service Policy to a PVC, page 72

• Troubleshooting Tips, page 73

Restrictions

The following restrictions apply to policing on the 4-port ATM ISE line card:

• The service-policy command must be used in l2transport mode. The EXP bit setting applies

uniformly for CLP0 and CLP1 cells.

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• Policing is supported on the 508 channels that can be used for cell packing or cell relay. The rest of

the channels cannot be policed. The FPGA does not police on AAL5 channels or in port mode.

• When removing a two-level policy, you must remove the child service-policy before removing the

parent service-policy.

• For VBR.1 and VBR.2 policies, the correct total number of cells dropped is obtained by summing

the statistics collected by the first and second bucket-exceed counters. The statistic of the first bucket-exceed counter sometimes remains zero and cannot be used to represent the result of the first bucket policing. This is due to the design of the policing function in the hardware, where the first and second buckets operate in parallel and not in serial.

• UBR.2 is not supported.

• The policer is correct to an accuracy of 99 percent.

• The range of CDVT on the 4-port ATM ISE line card is 1..1,000,000. The default value is 50,000.

It is recommended that you use a minimum CDVT value greater than 50, otherwise policing accuracy will be less than 99 percent.

• It is also recommended to use an MBS value of greater than 10 cells, otherwise policing accuracy

will be less than 99% for the SCR bucket.

• The cell-based policer’s burst tolerance on the 4-port ATM ISE line card is 1 second. If you

configure a PCR and SCR such that the MBS exceeds the limitation that can be configured on the hardware, the policy will be rejected. You will be notified of the maximum MBS value that can be configured with the given PCR and SCR values.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Configuring CBR or UBR.1 Policing

This task describes how to configure CBR or UBR.1 policing.

SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map policy-map-name

4. class class-default

5. policy rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

DETAILED STEPS

Command or Action Purpose

Step 1

Step 2

enable

Example:

Router> enable

configure terminal

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Example:

Router# configure terminal

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Command or Action Purpose

Step 3

policy-map policy-map-name

Example:

Router(config)# policy-map cbr

Step 4

class class-default

Example:

Router(config-pmap)# class class-default

Step 5

police rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

Example:

Router(config-pmap-c)# police rate 100000 cps delay-tolerance 5 conform-action transmit exceed-action drop

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Specifies the name of the service policy to configure.

Specifies the name of a predefined class, which was defined with the class-map command, to be included in the service policy. You can include the default class, class-default, in the service policy.

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on page 16.

After you configure the policy map, you must attach it to a PVC using the service-policy command as described in the “Attaching a Service Policy to a PVC” section on page 72.

Configuring VBR.1 Policing

This task describes how to configure VBR.1 policing.

SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map child-vbr1

4. class class-default

5. police rate scr cps atm-mbs mbs cells conform-action transmit exceed-action drop

6. exit

7. exit

8. policy-map vbr1

9. class class-default

10. set mpls experimental mpls-exp-value

11. policy rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

12. service-policy child-vbr1

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DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

policy-map child-vbr1

Example:

Router(config)# policy-map child-vbr1

Step 4

class class-default

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the name of the child service policy to configure.

Specifies to configure the default class referred to as class-default.

Step 5

Step 6

Step 7

Step 8

Step 9

Example:

Router(config-pmap)# class class-default

police rate scr cps atm-mbs mbs cells conform-action transmit exceed-action drop

Example:

Router(config-pmap-c)# police rate 200000 cps atm-mbs 1024 cells conform-action transmit exceed-action drop

exit

Example:

Router(config-pmap-c)# exit

exit

Example:

Router(config-pmap)# exit

policy-map vbr1

Example:

Router(config)# policy-map vbr1

class class-default

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on page 16.

Exits class mode.

Exits policy-map mode.

Specifies the name of the parent service policy to configure.

Specifies to configure the default class.

Example:

Router(config-pmap)# class class-default

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Command or Action Purpose

Step 10

set mpls experimental mpls-exp-value

Example:

Router(config-pmap-c)# set mpls experimental 4

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

(Optional) Specifies the value used to set the MPLS EXP bits defined by the policy map. Valid values are numbers from 0 to 7.

Step 11

police rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

Example:

Router(config-pmap-c)# police rate 500000 cps delay-tolerance 1000 conform-action transmit exceed-action drop

Step 12

service-policy child-vbr1

Example:

Router(config-pmap-c)# service-policy child-vbr1

After you configure the policy map, you must attach it to a PVC using the service-policy command as described in the “Attaching a Service Policy to a PVC” section on page 72.

Configuring VBR.2 Policing

This task describes how to configure VBR.2 policing.

SUMMARY STEPS

1. enable

2. configure terminal

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on page 16.

Attaches the child service policy to the VBR1 policy map.

3. class-map match-all clp0

4. match not atm clp

5. exit

6. policy-map child-vbr1

7. class clp0

8. police rate scr cps atm-mbs mbs cells conform-action transmit exceed-action drop

9. exit

10. exit

11. policy-map vbr2

12. class class-default

13. set mpls experimental mpls-exp-value

14. policy rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

15. service-policy child-vbr1

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DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Example:

Router# configure terminal

Step 3

class-map match-all class-map-name

Example:

Router(config)# class-map match-all cpl0

Step 4

match not match-criteria

Example:

Router(config-cmap)# match not atm clp

Step 5

exit

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the user-defined name of the traffic class. Use match-all to specify a logical AND operator for all matching statements under this traffic class.

Specifies that CLP1 is used as an unsuccessful match criterion, meaning that CLP1 cells will pass and CLP0 cells will be discarded.

Exits class-map mode.

Step 6

Step 7

Step 8

Step 9

Example:

Router(config-cmap)# exit

policy-map child-vbr2

Example:

Router(config)# policy-map child-vbr1

class class-map-name

Example:

Router(config-pmap)# class clp0

police rate scr cps atm-mbs mbs cells conform-action transmit exceed-action drop

Example:

Router(config-pmap-c)# police rate 100 cps atm-mbs 1024 cells conform-action transmit exceed-action drop

exit

Example:

Router(config-pmap-c)# exit

Specifies the name of the child service policy to configure.

Specifies to configure the class defined in Step 3.

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on page 16.

Exits class mode.

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Command or Action Purpose

Step 10

exit

Example:

Router(config-pmap)# exit

Step 11

policy-map vbr2

Example:

Router(config)# policy-map vbr2

Step 12

class class-default

Example:

Router(config-pmap)# class class-default

Step 13

set mpls experimental mpls-exp-value

Example:

Router(config-pmap-c)# set mpls experimental 4

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Exits policy map mode.

Specifies the name of the parent service policy to configure.

Specifies to configure the default class.

(Optional) Specifies the value used to set the MPLS EXP bits defined by the policy map. Valid values are numbers from 0 to 7.

Step 14

police rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

Example:

Router(config-pmap-c)# police rate 2500000 cps delay-tolerance 10 conform-action transmit exceed-action drop

Step 15

service-policy child-vbr2

Example:

Router(config-pmap-c)# service-policy child-vbr2

After you configure the policy map, you must attach it to a PVC using the service-policy command as described in the “Attaching a Service Policy to a PVC” section on page 72.

Configuring VBR.3 Policing

This task describes how to configure VBR.2 policing.

SUMMARY STEPS

1. enable

2. configure terminal

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on page 16.

Attaches the child service policy to the VBR1 policy map.

3. class-map match-all clp0

4. match not atm clp

5. exit

6. policy-map child-vbr3

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7. class clp0

8. police rate scr cps atm-mbs mbs cells conform-action transmit exceed-action transmit

9. exit

10. exit

11. policy-map vbr3

12. class class-default

13. set mpls experimental mpls-exp-value

14. policy rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

15. service-policy child-vbr3

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Step 3

Step 4

Step 5

Step 6

Step 7

Example:

Router# configure terminal

class-map match-all class-map-name

Example:

Router(config)# class-map match-all cpl0

match not match-criteria

Example:

Router(config-cmap)# match not atm clp

exit

Example:

Router(config-cmap)# exit

policy-map child-vbr3

Example:

Router(config)# policy-map child-vbr1

class class-map-name

Example:

Router(config-pmap)# class clp0

Specifies the user-defined name of the traffic class. Use match-all to specify a logical AND operator for all matching statements under this traffic class.

Specifies a single match criterion value to use as an unsuccessful match criterion.

Exits class-map mode.

Specifies the name of the child service policy to configure.

Specifies to configure the class defined in Step 3.

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Command or Action Purpose

Step 8

police rate scr cps atm-mbs mbs cells conform-action transmit exceed-action drop

Example:

Router(config-pmap-c)# police rate 100000 cps atm-mbs 1024 cells conform-action transmit exceed-action drop

Step 9

exit

Example:

Router(config-pmap-c)# exit

Step 10

exit

Example:

Router(config-pmap)# exit

Step 11

policy-map vbr3

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on page 16.

Exits class mode.

Exits policy map mode.

Specifies the name of the parent service policy to configure.

Step 12

Step 13

Step 14

Step 15

Example:

Router(config)# policy-map vbr3

class class-default

Example:

Router(config-pmap)# class class-default

set mpls experimental mpls-exp-value

Example:

Router(config-pmap-c)# set mpls experimental 4

police rate pcr cps delay-tolerance cdvt conform-action transmit exceed-action drop

Example:

Router(config-pmap-c)# police rate 250000 cps delay-tolerance 10 conform-action transmit exceed-action drop

service-policy child-vbr3

Example:

Router(config-pmap-c)# service-policy child-vbr3

Specifies to configure the default class.

(Optional) Specifies the value used to set the MPLS EXP bits defined by the policy map. Valid values are numbers from 0 to 7.

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on page 16.

Attaches the child service policy to the VBR1 policy map.

After you configure the policy map, you must explicitly attach it to a PVC using the service-policy command as described in the “Attaching a Service Policy to a PVC” section on page 72.

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Attaching a Service Policy to a PVC

After you define a service policy with the desired QoS configuration, you must attach it to a PVC as described in this task.

SUMMARY STEPS

1. enable

2. configure terminal

3. interface atmslot/port

4. atm clock internal

5. pvc vpi/vci l2transport

6. encapsulation aal0

7. xconnect peer-router-id vcid encapsulation mpls

8. service-policy input policy-map-name

DETAILED STEPS

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Command or Action Purpose

enable

Enables privileged EXEC mode.

• Enter your password if prompted.

Example:

Router> enable

configure terminal

Enters global configuration mode.

Example:

Router# configure terminal

interface atmslot/port

Specifies an ATM interface to configure.

Example:

Router(config)# interface atm1/0

atm clock internal

Causes the ATM interface to generate the transmit clock internally.

Example:

Router(config)# atm clock internal

pvc vpi/vci l2transport

Assigns a virtual path identifier (VPI) and virtual circuit identifier (VCI). The l2transport keyword indicates that

Example:

Router(config-if)# pvc 1/200 l2transport

encapsulation aal0

the PVC is a switched PVC and not a terminated PVC.

For ATM Cell Relay, this command specifies raw cell encapsulation for the interface. Make sure you specify the

Example:

Router(config-atm-l2trans-pvc)# encapsulation aal0

same encapsulation type on the PE and CE routers.

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Command or Action Purpose

Step 7

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Step 8

service-policy input policy-map-name

Example:

Router(config-atm-l2trans-pvc)# service-policy input vbr1

Troubleshooting Tips

Use the following show commands to display the counters for conformance and drop cells for VP and VC connections:

Command Purpose

Router# show policy-map policy-map-name

Router# show policy-map interface atmslot/port vp

vpi

Router# show policy-map interface atmslot/port vc vpi/vci

Router# show policy-map interface atmslot/port vc vpi/vci [input | output]

Displays the user-specified traffic policy.

Displays the packet statistics of all classes that are configured for all service policies on the specified interface.

Displays the packet statistics of all classes that are configured for all service policies on a specific PVC on the interface.

Displays the packet statistics of all classes that are configured for all input or output service policies on a specific PVC on the interface.

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Binds the attachment circuit to a pseudowire VC or VP.

Attaches a service policy to a VC and specifies the direction in which the policy should be applied.

Configuring Experimental Mapping

You can configure the experimental bits on PVCs, PVPs, and a port. The following tasks describe how to set the experimental bits in various situations:

• Configuring Experimental Bits on PVCs, page 73

• Configuring Experimental Bits on a Port, page 75

Configuring Experimental Bits on PVCs

This task describes how to configure the experimental bits in the MPLS header on a PVC.

SUMMARY STEPS

1. enable

2. configure terminal

3. policy-map policy-map-name

4. class class-map-name

5. set mpls experimental mpls-exp-value

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6. exit

7. exit

8. interface atmslot/port

9. pvc vpi l2transport

10. service-policy input policy-map-name

11. xconnect peer-router-id vcid encapsulation mpls

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Example:

Router# configure terminal

policy-map policy-map-name

Example:

Router(config)# policy-map atm-policy

class class-map-name

Example:

Router(config-pmap)# class atm-class

set mpls experimental mpls-exp-value

Example:

Router(config-pmap-c)# set mpls experimental 4

exit

Example:

Router(config-pmap-c)# exit

exit

Example:

Router(config-pmap)# exit

interface atmslot/port

Specifies the name of the child service policy to configure.

Specifies to configure the default class referred to as class-default.

(Optional) Specifies the value used to set the MPLS EXP bits defined by the policy map. Valid values are numbers from 0 to 7.

Exits class mode.

Exits policy-map mode.

Specifies an ATM interface to configure.

Example:

Router(config)# interface atm1/0

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Command or Action Purpose

Step 9

pvc vpi/vci l2transport

Example:

Router(config-if)# pvc 1/200 l2transport

Step 10

service-policy input policy-map-name

Example:

Router(config-atm-l2trans-pvc)# service-policy input atm-policy

Step 11

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Configuring Experimental Bits on a Port

How to Configure AToM VCs on the 4-Port ATM ISE Line Card

Assigns a virtual path identifier (VPI) and virtual circuit identifier (VCI). The l2transport keyword indicates that the PVC is a switched PVC and not a terminated PVC.

Attaches a service policy to a VC and specifies the direction in which the policy should be applied.

Binds the attachment circuit to a pseudowire VC or VP.

SUMMARY STEPS

DETAILED STEPS

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Step 2

configure terminal

This task describes how to configure the experimental bits in the MPLS header on a port.

1. enable

2. configure terminal

3. policy-map policy-map-name

4. class class-map-name

5. set mpls experimental mpls-exp-value

6. exit

7. exit

8. interface atmslot/port

9. service-policy input policy-map-name

10. xconnect peer-router-id vcid encapsulation mpls

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Example:

Router# configure terminal

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Command or Action Purpose

Step 3

policy-map policy-map-name

Example:

Router(config)# policy-map atm-policy

Step 4

class class-map-name

Example:

Router(config-pmap)# class atm-class

Step 5

set mpls experimental mpls-exp-value

Example:

Router(config-pmap-c)# set mpls experimental 4

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Specifies the name of the child service policy to configure.

Specifies to configure the default class referred to as class-default.

(Optional) Specifies the value used to set the MPLS EXP bits defined by the policy map. Valid values are numbers from 0 to 7.

Step 6

Step 7

Step 8

Step 9

Step 10

exit

Example:

Router(config-pmap-c)# exit

exit

Example:

Router(config-pmap)# exit

interface atmslot/port

Example:

Router(config)# interface atm1/0

service-policy input policy-map-name

Example:

Router(config-if)# service-policy input atm-policy

xconnect peer-router-id vcid encapsulation mpls

Example:

Router(config-atm-l2trans-pvc)# xconnect

13.13.13.13 100 encapsulation mpls

Exits class mode.

Exits policy-map mode.

Specifies an ATM interface to configure.

Attaches a service policy to a VC and specifies the direction in which the policy should be applied.

Binds the attachment circuit to a pseudowire VC or VP.

Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card

The following sections provide information to help you troubleshoot ATM errors on the 4-port ATM ISE line cards:

• Troubleshooting Commands, page 77

• Obtaining Per-VC Counters, page 81

• Debugging Unexpected TX Drops on a VC, page 82

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• Upgrading the FPGA Image, page 83

Troubleshooting Commands

Use the following commands to troubleshoot ATM errors:

• show interfaces atm

• show controller traffic

• show controller atm

show interfaces atm

The most common symptoms of ATM-level errors are incrementing numbers in one of the error counters (displayed in boldface) in the show interfaces command:

Router# show interfaces atm1/1 ATM1/1 is up , line protocol is up Hardware is PM622 OC-12c ATM, address is 0008.200b.b0ab (bia 008.200b.b0ab) MTU 4470 bytes, sub MTU 4470, BW 622000 Kbit, DLY 80 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ATM, loopback not set Encapsulation(s): AAL5, PVC mode 2047 maximum active VCs, 4 current VCCs VC idle disconnect time: 300 seconds Last input never, output 00:00:02, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts (0 IP multicast) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 packets output, 56 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out

Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card

Each of the error counters is described in Tab le 8.

Table 8 show interfaces Error Counter Descriptions

Error Counter Description

Giants The number of packet reassemblies that failed because of a packet size greater than

Input Errors The total number of packet reassemblies that failed because of errors other than

CRC The number of packet reassemblies that failed because of an invalid AAL5 CRC32

Ignored The total number of packet reassemblies that failed because of complete buffer

the maximum allowed packet size (18,104 bytes).

resource exhaustion (not including cells received on nonexisting VC).

trailer.

exhaustion on the SAR.

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Table 8 show interfaces Error Counter Descriptions (continued)

Error Counter Description

Abort The number of packet reassemblies that failed because of receiving a trailer length

Output errors The total number of packets that were not transmitted because of any error other

show controller traffic

Any packets received on nonexistence VCs will be displayed in the show atm traffic RP command.

router# show atm traffic 3523 Input packets 3510 Output packets 0 Broadcast packets 0 Packets received on non-existent VC 0 Packets attempted to send on non-existent VC 3507 OAM cells received F5 InEndloop: 0, F5 InSegloop: 0, F5 InAIS: 0, F5 InRDI: 0 F4 InEndloop: 3507, F4 InSegloop: 0, F4 InAIS: 0, F4 InRDI: 0 3507 OAM cells sent F5 OutEndloop: 0, F5 OutSegloop: 0, F5 OutAIS: 0 F5 OutRDI: 0 F4 OutEndloop: 3507, F4 OutSegloop: 0, F4 OutRDI: 0 F4 OutAIS: 0 0 OAM cell drops

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

of 0.

than resource exhaustion. This includes malformed packets, CRC errors, and so on.

show controller atm

To display the ATM statistics on the line card, use the line card show controller atm privileged EXEC command. The available show controller atm counters are described in Table 9 on page 79.

Router# exec slot 1 show controller atm 1 traffic

VCID InPkts InBytes PktsInSW InOams OutPkts OutBytes 1 78278986 4227058178 0 0 82600440 4460416714 SAR Counters: tx_packets : 82600440 tx_bytes : 4460416714 tx_total_resource_errs: 0 tx_total_other_errs : 0 tx_wred_thresh_drops : 0 tx_wred_random_drops : 0 rx_packets : 78278986 rx_bytes : 4227058178 rx_total_resource_errs: 0 rx_total_other_errs : 0 rx_buffer_exhaust_errs: 0 rx_CRC32_errors : 0 rx_packet_abort_errs : 0 rx_trailer_len_errs : 0 rx_mps_errors : 0 rx_reassembly_timeout: 0

The following are per-SAR counters: Reassembly SAR:

sys_rx_unopen_vc_cls : 89169 sys_tx_unopen_vc_cls : 0 sys_ecc_errors : 0 sys_ecc_and_addr : 0xFFFFFFF sys_ecc_or_addr : 0x00000000

Segmentation SAR:

sys_rx_unopen_vc_cls : 0 sys_tx_unopen_vc_cls: 0 sys_ecc_errors : 0 sys_ecc_and_addr : 0xFFFFFFFF sys_ecc_or_addr : 0x00000000

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Table 9 show controller atm Counters

Counter Description Comments

tx_packets A 64-bit counter of the number of packets

transmitted on this interface, including OAM cells. This should be approximately the total number of packets on all the VCs on this interface. (If traffic stops for a few seconds, these numbers should be exactly equal.)

tx_bytes A 64-bit counter of the bytes transmitted on this

interface, including OAM cells and AAL5 header encapsulations (such as AAL5SNAP). This should be approximately the total number of bytes transmitted on each of the VCs.

tx_total_resource_errs The total number of packets that were not

transmitted because of any resource exhaustion error. This does not necessarily imply an error, because this counter includes tx_wred_thresh_drops and tx_wred_random_drops, as well as packet drops due to complete buffer exhaustion on the SAR. This should be equal to the sum of the number of resource errors that occur on all the VCs.

tx_total_other_errs The total number of packets that were not

transmitted because of any error other than resource exhaustion, but not including no-vc drops. This includes malformed packets, CRC errors, and so on. This should be approximately the total number of tx_other_errors that occur on all the VCs on this interface.

tx_wred_thresh_drops The total number of WRED maximum threshold

drops on this interface. This counter is included in the tx_total_resource_errs counter.

tx_wred_random_drops The total number of WRED random drops on this

interface. This counter is included in the tx_total_resource_errs counter.

rx_packets The total number of packets reassembled on this

interface by the SAR, including OAM cells.

rx_bytes The total number of bytes reassembled on this

interface by the SAR, including AAL5 encapsulation bytes.

Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card

Packets output in the show interface command should have the same value, excluding OAM cells.

Output bytes in the show interface command should have the same value, excluding OAM cells.

Buffer exhaustion should not occur if you have not oversubscribed the queue thresholds on the interface. See the

“Debugging Unexpected TX Drops on a VC” section on page 82.

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Table 9 show controller atm Counters (continued)

Counter Description Comments

rx_total_resource_errs The total number of packet reassemblies that

failed due to resource exhaustion. This error includes rx_buffer_exhaust_errs.

rx_total_other_errs The total number of packet reassemblies that

failed because of errors other than resource exhaustion (not including no-vc cells), including rx_crc32_errors, rx_packet_abort_errs, rx_trailer_len_errs, rx_mps_errors, and rx_reassembly_timeout.

rx_buffer_exhast_errs The total number of packet reassemblies that

failed because of complete buffer exhaustion on the SAR. This is included in rx_total_resource_errs.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

This error is not likely to occur on the 4-port ATM IS E li n e c ar d R X SAR, because it works in unidirectional mode with 64M buffers available only for reassemblies.

Same value as Input Errors in the show interface command.

This error is not likely to occur on the 4-port ATM IS E li n e c ar d R X SAR, because it works in unidirectional mode with 64M buffers available only for reassemblies.

rx_packet_abort_errs The number of packet reassemblies that failed

because of receiving a trailer length of 0. This is included in rx_total_other_errs.

rx_mps_errors The number of packet reassemblies that failed

because of a packet size greater than the maximum allowed packet size. This is included in rx_total_other_errs.

rx_crc32_errors The number of packet reassemblies that failed

because of an invalid AAL5 CRC32 trailer. This is included in rx_total_other_errs.

rx_trailer_len_errs The number of packet reassemblies that failed

because of a packet whose AAL5 trailer had an invalid trailer length. This is included in rx_total_other_errs.

rx_reassembly_timeout The number of packet reassemblies that failed

because of timing out before receiving the last cell of a packet. This is included in rx_total_other_errs.

Same value as Ignored in the show interface command.

Same value as Abort in the show interface command.

Same value as Giants in the show interface command.

Same value as CRC in the show interface command.

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Table 9 show controller atm Counters (continued)

Counter Description Comments

sys_rx_unopen_vc_cls Packets received on nonexistent VC. Also available in the

sys_ecc_errors Total number of single bit errors detected on the

reassembly SAR.

Note These counters are only cleared when the line card is reloaded.

Obtaining Per-VC Counters

To display per-VC counters, first you must determine what connection ID is associated with the VC. This procedure differs slightly, depending on the version of Cisco IOS you are running. The following procedure describes how to display the per-VC counters in Cisco IOS release 12.0(27)S or later.

Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card

show atm traffic command on the RP.

Step 1 Retrieve the VCD by using the show atm pvc command on the RP.

router# show atm pvc

VCD/ Peak Avg/Min Burst Interface Name VPI VCI TYPE Encaps Kbps Kbps Cells Sts 0/0.1 2 1 100 PVC SNAP 23000 N/A UP

In this example, the VCD for the VC whose VCI/VPI are 1/100 is 2.

Step 2 Use the show controller atm command to get the connection ID for VCD 2:

router# exec slot 0 show controller atm 0 traffic ========= Line Card (Slot 0) =========

VCID CONNID InPkts InBytes PktsInSW InOams OutPkts OutBytes 2 1 0 0 0 0 0 0

For the example above, the connID for VC 1/100 is 1.

Step 3 Now specify the connID in the show controller atm traffic command and view the VC statistics:

Router# exec slot 0 show controller atm 0 traffic 1

========= Line Card (Slot 1) ======= VCID: 2, CONNID: 1, VPI: 1, VCI: 100 Rx Total Stats: rx_packets : 0 rx_bytes : 0 rx_resource_err: 0 rx_other_err : 0 rx_sw_packets : 0 rx_oam_cells : 0

Tx Stats:

COSQ #0 (ChID=010D) tx_packets : 0 tx_bytes : 0 tx_resource_err: 0 tx_other_err : 0

tx_queue_depth : 0 tx_avg_q_depth: 0.0000 tx_random_drop : 0 tx_thresh_drop: 0

COSQ #1 (ChID=010E)

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tx_packets : 0 tx_bytes : 0 tx_resource_err: 0 tx_other_err : 0 tx_queue_depth : 0 tx_avg_q_depth: 0.0000 tx_random_drop : 0 tx_thresh_drop: 0

COSQ #7 (ChID=010F)

tx_packets : 0 tx_bytes : 0 tx_resource_err: 0 tx_other_err : 0 tx_queue_depth : 0 tx_avg_q_depth: 0.0000

Tx Total Stats:

tx_packets : 0 tx_bytes : 0 tx_resource_err: 0 tx_other_err : 0

Counters are available per queue opened on the specified VC. Each queue is linked to a class in the policy map attached to this VC. To associate a queue number to a class, use the command show policy interface (for example,

show policy interface atm1/1.3).

Descriptions of the counters shown in this command are described in Table 9 on page 79 and Tab le 1 0 .

Table 10 show controller atm VC Counter Descriptions

Counter Description

tx_queue_depth Current queue depth (in number of cells).

tx_avg_q_depth Current average queue depth (in number of cells) as calculated by the WRED

algorithm.

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

The following procedure describes how to display the per-VC counters in Cisco IOS releases 12.0(26)S and 12.0(25)S.

Step 1 Retrieve the VCD by using the show atm pvc command on the RP.

router# show atm pvc

VCD/ Peak Avg/Min Burst Interface Name VPI VCI TYPE Encaps Kbps Kbps Cells Sts 0/0.1 2 1 100 PVC SNAP 23000 N/A UP

In this example, the VCD for the VC whose VCI/VPI are 1/100 is 2.

Step 2 Now specify the VCD in the show controller atm traffic command (2 in the following example), and

view the VC statistics:

Router# exec slot 0 show controller atm 0 traffic 2

See the previous procedure for a description of the command output.

Debugging Unexpected TX Drops on a VC

Each interface is served by an egress SAR. All VCs transmitted by this interface share a pool of approximately 950,000 TX cell buffers available in the SAR.

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Improper queueing configuration, using the queue-limit or random-detect commands, allows for long queues to build up in the SAR. In this case, if some VCs are oversubscribed, their queues might eventually exhaust the TX cell buffer pool. When no TX cell buffers are available, no VC can enqueue outbound packets, including such VCs that are not oversubscribed; that is, VC isolation is not maintained. This can be confirmed by checking the following counters while tx_resource_err is incrementing:

• the tx_queue_depth counter should be zero and

• the tx_random_drops and tx_thresh_drops should be constant, not incrementing.

In a properly configured system, the tx_resource_err counter of a VC should only be incrementing when this specific VC is oversubscribed and dropping packets because the queue limit is being exceeded or because of WRED operation. This can be confirmed by checking the following counters while tx_resource_err is incrementing:

• If queue limit is configured on the VC, the tx_queue_depth counter should be non-zero, up to the

configured queue limit at maximum.

• If WRED is configured, then tx_queue_depth should be non-zero, and either tx_random_drops or

tx_thresh_drops (or both) will also be incrementing.

Troubleshooting ATM Errors on the 4-Port ATM ISE Line Card

Note The above will be observable easily on a VC that is constantly oversubscribed, so that (some of) its

queues are never completely drained. However, if the traffic sent to the VC is highly bursty, then the queues might be building up momentarily, but be completely drained by the time the counters are displayed. In this case, tx_resource_err will increment, even though the queue depth might be small (or zero) at the time it is displayed. It is therefore recommended to sample the counters several times before drawing conclusions.

Upgrading the FPGA Image

If the line card does not boot and you receive an error message indicating that there is a problem with the Field-Programmable Gate Array (FPGA) image (or if the line card alphanumeric LED display remains frozen in IOS STRT state), you need to upgrade the FPGA image using the update-fpga option in the diag command.

Note The diag command and the update-fpga option are documented in the Field Diagnostics for the Cisco

12000 Series Internet Router publication.

When the Cisco IOS image boots, it verifies that a compatible FPGA image is running on the router. The major version number of the FPGA image must be the same as that expected by the Cisco IOS image; the minor version number on the FPGA image must be the same as or greater than the minor version number expected by the Cisco IOS image. For example, if the Cisco IOS image expects a minimum FPGA image of 03.02, the software will verify that the actual major version number of the FPGA image in the line card bootflash is 03, and that the minor version number is 02 or above.

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Configuring Modular QoS CLI

The Modular QoS CLI (MQC) is a CLI structure that allows users to create traffic policies and attach these policies to interfaces. A traffic policy contains a traffic class and one or more QoS features. A traffic class is used to classify traffic, while the QoS features in the traffic policy determine how to treat the classified traffic.

Modular QoS CLI configuration includes the following three steps:

• Defining a Traffic Class, page 84

• Creating a Traffic Policy, page 85

• Attaching a Traffic Policy to a PVC, page 90

Defining a Traffic Class

The class-map command is used to create a traffic class. To create a traffic class containing match criteria, use the class-map command to specify the traffic class name, then use a match command in class map configuration mode.

The syntax of the class-map command is as follows:

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

class-map [match-any | match-all] class-name no class-map [match-any | match-all] class-name

The class-map match-all command is used when all the match criteria in the traffic class must be met for a packet to match the specified traffic class. The class-map match-any command is used when the first possible match criterion from a list of match criteria must be met for a packet to match the specified traffic class. If neither match-all nor match-any is specified, the traffic class will behave in a manner consistent with class-map match-all command.

For additional information on using the match-any and match-all options, see the “Using the class-map

match-any and class-map match-all Commands” section on page 85.

Command Purpose

Router(config)# class-map class-map-name

Router(config)# class-map match-all

class-map-name

Router(config)# class-map match-any

class-map-name

Router(config-cmap)# match access-group

access-group

Router (config-cmap)# match any

Router (config-cmap)# match ip dscp number

Specifies the user-defined name of the traffic class.

Specifies a logical AND operator for all matching statements under this traffic class.

Specifies a logical OR operator for all matching statements under this traffic class.

Specifies the numbered access list against whose contents packets are checked to determine if they belong to the class.

Specifies that all packets will be matched.

Specifies up to eight differentiated services code point (DSCP) values used as match criteria. The value of each service code point is between 0 and 63.

Router (config-cmap)# match ip precedence number

Specifies up to eight IP precedence values used as match criteria.

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Command Purpose

Router(config-cmap)# match mpls experimental

mpls-values

Router(config-cmap)# match qos-group

qos-group-value

Specifies the MPLS values to use as match criteria against which packets are checked to determine if they belong to the class.

Specifies the number of the QoS group index used as a match criterion against which packets are checked to determine if they belong to the class.

Using the class-map match-any and class-map match-all Commands

This section illustrates the difference between the class-map match-any command and the class-map match-all command. The match-any and match-all options determine how packets are evaluated when

multiple match criteria exist. Packets must either meet all of the match criteria (match-all) or one of the match criteria (match-any) in order to be considered a member of the traffic class.

The following example shows a traffic class configured with the class-map match-all command:

Router(config)# class-map match-all john Router(config-cmap)# match qos-group 4 Router(config-cmap)# match access-group 101

Configuring Modular QoS CLI

If a packet arrives on a router with traffic class john configured on the interface, the packet is evaluated to see if it matches the IP protocol, QoS group 4, and access group 101. If both of these match criteria are met, the packet matches traffic class john.

The following example shows a traffic class configured with the class-map match-any command:

Router(config)# class-map match-any george Router(config-cmap)# match qos-group 4 Router(config-cmap)# match access-group 101

In traffic class george, the match criteria are evaluated consecutively until a successful match criterion is located. The packet is first evaluated to the see whether IP protocol can be used as a match criterion. If IP protocol can be used as a match criterion, the packet is matched to traffic class george. If IP protocol is not a successful match criterion, then QoS group 4 is evaluated as a match criterion. Each matching criterion is evaluated to see if the packet matches that criterion. Once a successful match occurs, the packet is classified as a member of traffic class george. If the packet matches none of the specified criteria, the packet is classified as a member of the default class.

Note that the class-map match-all command requires that all the match criteria must be met in order for the packet to be considered a member of the specified traffic class. However, only one match criterion must be met for the packet in the class-map match-any command to be classified as a member of the traffic class.

Creating a Traffic Policy

To configure a traffic policy, use the policy-map command to specify the traffic policy name, then use the following configuration commands to associate a traffic class, which was configured with the class-map command, with one or more QoS policies. The traffic class is associated with the traffic policy when the class command is used. The class command has to be issued immediately after entering policy map configuration mode. After entering the class command, you are automatically in policy map class configuration mode, which is where the QoS policies for the traffic policy are defined.

The QoS policies that can be applied in the traffic policy in policy map class configuration mode are detailed below.

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Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Configuring Modular QoS CLI

The syntax of the policy-map command is:

policy-map policy-name no policy-map policy-name

The syntax of the class command is:

class class-name no class class-name

In addition to any user-defined classes, a pre-existing class named class-default exists. All packets that do not match any of the user-defined classes belong to class-default.

Commands for Egress Traffic

The following commands can be used to configure a traffic policy for egress traffic:

Command or Action Purpose

enable

Example:

Router> enable

configure terminal

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Example:

Router# configure terminal

policy-map policy-name

Example:

Router(config)# policy-map policy1

class class-name

Example:

Router(config-pmap)# class class1 Router(config-pmap)# class class-default

bandwidth {bandwidth-kbps | percent percent}

bandwidth remaining percent percent

Example:

Router(config-pmap-c)# bandwidth percent 20

Router(config-pmap-c)# bandwidth remaining percent 4

Specifies the name of the traffic policy to configure.

Specifies the name of a predefined class, which was defined with the class-map command, to be included in the service policy. You can include the default class, class-default, in the traffic policy.

Specifies a minimum bandwidth guarantee to a traffic class.

A minimum bandwidth guarantee can be specified in kilobits per second ( bandwidth (

bandwidth-kbps) or as a percentage of the overall available

percent percent). In this case, the bandwidth specified

cannot exceed the available bandwidth remaining after the priority class is accounted for.

Alternatively, the minimum bandwidth guarantee can be based on the remaining bandwidth available (

remaining percent percent). If

there is no available bandwidth, then the class will receive no bandwidth, regardless of the percent specified.

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command or Action Purpose

police bps burst-normal burst-max conform-action action exceed-action action

Specifies a bandwidth usage and conformance policy by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on

Example:

Router(config-pmap-c)# police 8000 2000 4000 conform-action transmit exceed-action drop

priority

page 16.

Specifies the class as the priority class.

In order to specify the maximum bandwidth allowed by the priority class, use the police command with the exceed-action set to drop. If no maximum bandwidth is specified for the priority class, remaining classes will not have a minimum bandwidth guarantee.

queue-limit cells cells

Specifies the maximum number of cells queued for a traffic class that has a bandwidth configuration or class default specified.

Example:

Router(config-pmap-c)# queue-limit 576 cells

random-detect

Enables a weighted random early detection (WRED) drop policy for a traffic class that has a bandwidth configuration or class default specified.

random-detect dscp-based

Indicates that WRED is to use the DSCP value when it calculates the drop probability for the packet.

random-detect dscp dscpvalue min-threshold cells max-threshold cells

[mark-probability-denominator]

Specifies the minimum and maximum cell thresholds and, optionally, the mark-probability denominator for the DSCP value.

Configuring Modular QoS CLI

Example:

Router(config-pmap-c)# random-detect dscp 1 300 cells 700 cells 1

random-detect precedence precedence min-threshold cells max-threshold cells [mark-prob-denominator

Example:

Router(config-pmap-c)# random-detect precedence 4 500 cells 1100 cells 1

random-detect exponential-weighting-constant n

Example:

Router(config-pmap-c)# random-detect exponential-weighting-constant 1

set atm-clp

Note Use either the random-detect dscp-based command with

the random-detect dscp command or use the random-detect precedence command alone. Do not use the random-detect precedence command with either of the

DSCP commands.

Specifies the minimum and maximum cell thresholds and, optionally, the mark-probability denominator for the precedence value.

Note Use either the random-detect dscp-based command with

the random-detect dscp command or use the random-detect precedence command alone. Do not use the random-detect precedence command with either of the

DSCP commands.

Configures a WRED exponential weighting constant on a per COS queue basis.

Sets the ATM cell loss priority bit to 1.

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Configuring Modular QoS CLI

Command or Action Purpose

set ip dscp ip-dscp-value

Specifies the IP DSCP of packets within a traffic class. The IP DSCP value can be any value between 0 and 63.

Example:

Router(config-pmap-c)# set ip dscp 31

set ip precedence

Specifies the IP precedence of packets within a traffic class. The IP precedence value can be any value between 0 and 7.

set mpls experimental value

Designates the value to which the MPLS bits are set if the packets match the specified policy map.

Note If no limit is set on the bandwidth available for the priority class, no other classes will have a minimum

bandwidth guarantee. To limit the bandwidth available for the priority class, use the police command with the exceed-action set to drop.

Note If you configure eight traffic classes for egress MDRR, one class must be explicitly configured as the

priority class, and one is, by default, the class class-default.

Note You can configure either per-VC queue limits or random-detect, but not both on the same queue.

Note For any one service-policy, you cannot combine different bandwidth commands.

Commands for Ingress Traffic

The following commands can be used to configure a traffic policy for ingress traffic:

Command or Action Purpose

enable

Example:

Router> enable

configure terminal

Example:

Router# configure terminal

policy-map policy-name

Enables privileged EXEC mode.

• Enter your password if prompted.

Enters global configuration mode.

Specifies the name of the traffic policy to configure.

Example:

Router(config)# policy-map policy1

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Command or Action Purpose

class class-name

Specifies the name of a predefined class, which was defined with the class-map command, to be included in the traffic policy. You can

Example:

Router(config-pmap)# class class1 Router(config-pmap)# class class-default

police bps burst-normal burst-max conform-action action exceed-action action

include the default class, class-default, in the traffic policy.

Specifies a bandwidth usage and conformance policy by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on

Example:

Router(config-pmap-c)# police 8000 2000 4000 conform-action transmit exceed-action drop

police rate bps [burst mbs peak-rate peak] conform-action action exceed-action action violate-action action

page 16.

Specifies a maximum bandwidth usage by a traffic class through the use of a token bucket algorithm. For a description of the conform-action and exceed-action keywords, see Table 5 on

page 16.

Example:

Router(config-pmap-c)# police rate 64000000 conform-action transmit exceed-action drop

shape average mean-rate [burst-size [excess-burst-size]

Shapes ingress traffic to the indicated bit rate according to the algorithm specified.

Configuring Modular QoS CLI

Example:

Router(config-pmap-c)# shape average 2000

queue-limit number-of-packets

Example:

Router(config-pmap-c)# queue-limit 100

random-detect

random-detect dscp-based

random-detect dscp dscpvalue min-threshold cells max-threshold cells

[mark-probability-denominator]

Example:

Router(config-pmap-c)# random-detect dscp 1 300 cells 700 cells 1

Specifies the maximum number of packets queued for a traffic class.

Note This command is only allowed when the shape command is

used.

Enables a weighted random early detection (WRED) drop policy for a traffic class.

Note This command is only allowed when the shape command is

used.

Indicates that WRED is to use the DSCP value when it calculates the drop probability for the packet.

Specifies the minimum and maximum packet thresholds and, optionally, the mark-probability denominator for the DSCP value.

Note Use either the random-detect dscp-based command with

the random-detect dscp command or use the random-detect precedence command alone. Do not use the random-detect precedence command with either of the

DSCP commands.

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Configuring Modular QoS CLI

Command or Action Purpose

random-detect precedence precedence min-threshold packets max-threshold packets [mark-prob-denominator

Specifies the minimum and maximum cell thresholds and, optionally, the mark-probability denominator for the precedence value.

Example:

Router(config-pmap-c)# random-detect precedence 4 500 packets 1100 packets 1

set ip dscp ip-dscp-value

Example:

Router(config-pmap-c)# set ip dscp 31

set atm-clp

set ip precedence value

Example:

Router(config-pmap-c)# set ip precedence 5

set mpls experimental [imposition | topmost]

value

Example:

Router(config-pmap-c)# set mpls experimental 4

set qos-group value

Note Use either the random-detect dscp-based command with

the random-detect dscp command or use the random-detect precedence command alone. Do not use the random-detect precedence command with either of the

DSCP commands.

Specifies the IP DSCP of packets within a traffic class. The IP DSCP value can be any value between 0 and 63.

Sets the ATM cell loss priority bit to 1.

Specifies the IP precedence of packets within a traffic class. The IP precedence value can be any value between 0 and 7.

Designates the value to which the MPLS experimental bits are set if the packets match the specified policy map.

Specifies a QoS group value to associate with the packet. The QoS group value can be any value between 0 and 99.

Example:

Router(config-pmap-c)# set qos-group 45

Attaching a Traffic Policy to a PVC

Use the service-policy interface configuration command to attach a traffic policy to a VC and to specify the direction in which the policy should be applied (either on packets coming into the interface or packets leaving the interface).

Use the no form of the command to detach a traffic policy from a VC. The service-policy command syntax is as follows:

service-policy {input | output} policy-map-name no service-policy {input | output} policy-map-name

Cisco IOS Release 12.0(27)S

Software Configuration of ATM ISE Line Cards for Cisco 12000 Series Routers

Additional References

The following sections provide references related to the 4-port ATM ISE line card.

Cisco ISE - Line Card ISE Configuration Manual

Specifications and Main Features

Frequently Asked Questions

User Manual