Huawei Quidway S6700 Configuration Guide

Quidway S6700 Series Ethernet Switches

V100R006C00

Configuration Guide - Reliability

Issue 01

Date 2011-07-15

HUAWEI TECHNOLOGIES CO., LTD.

No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS" without warranties, guarantees or representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendations in this document do not constitute the warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang Shenzhen 518129 People's Republic of China

Website: http://www.huawei.com

Email: support@huawei.com

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

i

DANGER

WARNING

CAUTION

TIP

NOTE

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability About This Document

About This Document

Intended Audience

This document provides the basic concepts, configuration procedures, and configuration examples in different application scenarios of the reliability supported by the S6700.

This document describes how to configure the reliability.

This document is intended for:

l Data configuration engineers

l Commissioning engineers

l Network monitoring engineers

l System maintenance engineers

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol

Description

Indicates a hazard with a high level of risk, which if not avoided, will result in death or serious injury.

Indicates a hazard with a medium or low level of risk, which if not avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation, which if not avoided, could result in equipment damage, data loss, performance degradation, or unexpected results.

Indicates a tip that may help you solve a problem or save time.

Provides additional information to emphasize or supplement important points of the main text.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

ii

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability About This Document

Command Conventions

The command conventions that may be found in this document are defined as follows.

Convention Description

Boldface The keywords of a command line are in boldface.

Italic Command arguments are in italics.

[ ] Items (keywords or arguments) in brackets [ ] are optional.

{ x | y | ... } Optional items are grouped in braces and separated by

vertical bars. One item is selected.

[ x | y | ... ] Optional items are grouped in brackets and separated by

vertical bars. One item is selected or no item is selected.

{ x | y | ... }

[ x | y | ... ]

&<1-n> The parameter before the & sign can be repeated 1 to n times.

# A line starting with the # sign is comments.

*

Change History

Updates between document issues are cumulative. Therefore, the latest document issue contains all changes made in previous issues.

Changes in Issue 01 (2011-07-15)

Initial commercial release.

Optional items are grouped in braces and separated by vertical bars. A minimum of one item or a maximum of all items can be selected.

Optional items are grouped in brackets and separated by vertical bars. Several items or no item can be selected.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

iii

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability Contents

1 DLDP Configuration

About This Chapter

This chapter describes the principle, configuration procedure, and configuration example of the Device Link Detection Protocol (DLDP).

1.1 Introduction to DLDP

This section describes the concept of DLDP.

1.2 Configuring DLDP Functions

This section describes how to configure DLDP functions.

1.3 Resetting the DLDP Status

This section describes how to reset the DLDP status.

1.4 Maintaining DLDP

This section describes how to maintain DLDP.

1.5 Configuration Examples

This section provides a configuration example of DLDP.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

1

XGE0/0/1

XGE0/0/2

SwitchA

SwitchB

XGE0/0/1

SwitchA

RX

TX

RX

TX

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

1.1 Introduction to DLDP

This section describes the concept of DLDP.

On a network, unidirectional link faults often occur. That is, the local device can receive packets from the remote device through the link layer, but the remote device cannot receive packets from the local device.

Take the fiber as an example. The fault of unidirectional link may be caused by crossed connection of fibers or disconnection of one fiber.

Figure 1-1 Crossed connection of fibers

Figure 1-2 Disconnection of one fiber

DLDP can detect the link status of fibers or copper twisted pairs. If a unidirectional link exists, DLDP automatically disables the interface or prompts the user to manually disable the interface. This prevents network faults. Currently, the S6700 supports DLDP detection for up to 256 neighbors.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

As a link layer protocol, DLDP works with the physical layer protocol to detect the link status. The auto negotiation mechanism on the physical link detects physical signals and faults on the physical link, and DLDP identifies the remote device and unidirectional link and disables

2

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

unreachable interfaces. The auto negotiation mechanism and DLDP work together to detect and close unidirectional links on the physical and logical interfaces. If the interfaces on both ends of the link work normally on the physical layer, DLDP checks the connection and packet exchange between the two interfaces on the link layer. This process cannot be implemented through the auto negotiation mechanism.

1.2 Configuring DLDP Functions

This section describes how to configure DLDP functions.

1.2.1 Establishing the Configuration Task

Applicable Environment

On a network, unidirectional link faults often occur. To prevent network faults caused by unidirectional links, you can enable DLDP on interfaces at two ends of a pair of fibers or a copper twisted pair to monitor the link status. If a unidirectional link exists, DLDP automatically disables the interface connected to the link or prompts you to manually disable the interface.

Unidirectional links can be tested only when the devices on both ends of the fibers and copper twisted pairs support DLDP functions.

Pre-configuration Tasks

Before configuring DLDP, complete the following task:

l Configuring the interfaces at both ends to work in non-auto-negotiation mode

Data Preparation

To configure DLDP, you need the following data.

No.

1 Type and number of each interface

2 (Optional)Name of the interface group

3 (Optional) Interval for sending Advertisement packets

4 (Optional) Value of the Delay Down timer

Data

1.2.2 Enabling DLDP

Procedure

Step 1 Run:

system-view

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

3

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

The system view is displayed.

Step 2 Run:

dldp enable

DLDP is enabled globally.

Step 3 Run:

interface interface-type interface-number

The Ethernet interface view is displayed.

Or run:

port-group port-group-name

The interface group view is displayed.

Step 4 Run:

dldp enable

DLDP is enabled on the interface.

By default, DLDP is disabled globally and on each interface.

----End

1.2.3 (Optional) Setting the Operating Mode of DLDP

Context

If DLDP works in normal mode, the system can identify only one type of unidirectional link, that is, the crossed connection of fibers. In this mode, the system does not use any timer, so it cannot detect that a bidirectional link changes to a unidirectional link.

If DLDP works in enhanced mode, the system can identify two types of unidirectional links, that is, the crossed connection of fibers and the connection where one fiber is disconnected. To detect the unidirectional link caused by disconnection of one fiber, you need to manually set the rate and full-duplex mode of the interconnected ports; otherwise, DLDP does not take effect even if it is enabled. When a bidirectional link changes to a unidirectional link, the port where the Tx fiber receives optical signals is in Disable state, and the port where the Tx fiber receives no optical signals is in Inactive state.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

dldp work-mode { enhance | normal }

The operation mode of DLDP is set.

By default, the operation mode of DLDP is enhance mode.

----End

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

4

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

1.2.4 (Optional) Enabling DLDP Compatible Mode

Context

If the S6700 needs to work with the following Huawei switches to provide the DLDP function, this task is required. The software versions of the following switches must support the DLDP function:

l S8500

l S7800

l S6500

l S5600

l S5100–EI

l S3900

l S3500

l S3100

Procedure

Step 1 Run:

Step 2 Run:

Step 3 Run:

system-view

The system view is displayed.

bpdu mac-address mac-address [ mac-address-mask ]

The S6700 is configured to use the BPDU MAC address 010F-E200-0001 to send DLDP packets.

The MAC addresses used for sending DLDP packets on the S6700 and on the old Huawei switches are different. Therefore, the S6700 must be configured to use BPDU MAC address 10F-E200-0001 to send DLDP packets.

interface interface-type interface-number

The interface view is displayed.

Or run:

port-group port-group-name

The port group view is displayed.

Step 4 Run:

dldp compatible-mode enable

The DLDP compatible mode is enabled.

If two devices are connected by using two links, the DLDP compatible mode must be enabled or disabled on both the two interfaces.

If devices at both ends are S6700s, the interfaces at both ends must use the same DLDP compatible mode. That is, you must enable or disable the DLDP compatible mode simultaneously on the interfaces.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

5

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

Step 5 Run:

dldp compatible-mode local-mac

The DLDP packets sent in the DLDP compatible mode contain MAC addresses.

After the DLDP compatible mode is enabled on the S6700, the peer device of the S6700 may discover multiple neighbors, causing DLDP flapping. The dldp compatible-mode local-mac command can prevent this problem.

NOTE

At least one bit in the MAC address must be 0, and the MAC address cannot be a multicast MAC address.

----End

1.2.5 (Optional) Setting the Interval for Sending Advertisement Packets

Context

Procedure

Step 1 Run:

Step 2 Run:

Do as follows on the S6700 that needs to run DLDP.

system-view

The system view is displayed.

dldp interval time

The interval for sending Advertisement packets is set.

By default, the interval for sending Advertisement packets is 5 seconds.

The interval for sending Advertisement packets must be smaller than one third of the STP convergence time. If the interval is too long, STP loops occur before a unidirectional link is shut down on a DLDP interface. If the interval is too short, traffic on the network increases.

NOTE

Ensure that the interval for sending Advertisement packets is the same on the local and remote devices that are connected through fibers or copper twisted pairs.

----End

1.2.6 (Optional) Setting the Delay Down Timer

Procedure

Step 1 Run:

system-view

The system view is displayed.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

6

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

Step 2 Run:

dldp delaydown-timer time

The Delay Down timer is set.

By default, the Delay Down timer is 1 second.

If DLDP receives a Port-Down event when it is in Active, Advertisement, or Probe state, DLDP will enter Inactive state and clear the neighbor information. In certain cases, the port is Down for a very short time. For example, failure of the Tx fiber on a port may cause jitter of optical signals on the Rx fiber, that is, the port becomes Down and then becomes Up again. To prevent the neighbor information from being deleted immediately in this case, DLDP first enters the DelayDown state and starts the DelayDown timer. Before the DelayDown timer times out, DLDP retains the neighbor information and responds to only Port-Up events.

l If DLDP does not receive any Port-Up event when the DelayDown timer times out, it deletes

the neighbor information and enters the Inactive state.

l If DLDP receives the Port-Up event before the DelayDown timer times out, it returns to the

previous state.

The Delay Down timer applies to all DLDP interfaces.

----End

1.2.7 (Optional) Setting the Interface Blocking Mode

Context

When a unidirectional link is detected, DLDP blocks the corresponding interface in either of the following ways:

l Manual mode: This mode can prevent DLDP from blocking the interface immediately to

affect packet forwarding when the network performance is poor. It is a compromise mode used to prevent an interface from being blocked because of incorrect judgment of the system. In this mode, DLDP detects the unidirectional link, and the network administrator blocks the interface manually. When the DLDP state machine detects a unidirectional link, the system records the log and sends trap messages to prompt you the network administrator to block the interface manually. Then the DLDP state machine changes to the Disable state.

l Automatic mode: It is the default mode. When a unidirectional link is detected, the DLDP

state machine changes to the Disable state, and the system records the log, sends trap messages, and sets the interface state to Blocking.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

dldp unidirectional-shutdown { auto | manual }

The mode of blocking interfaces when a unidirectional link fault is detected is set.

By default, DLDP automatically blocks the interface when a unidirectional link fault is detected.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

7

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

An interface in DLDP Down state still sends RecoverProbe packets periodically. If correct RecoverEcho packets are received, it indicates that the unidirectional link changes to the bidirectional link and the DLDP status becomes Up.

----End

1.2.8 (Optional) Setting the Authentication Mode of DLDP Packets

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

dldp authentication-mode { md5 md5-password | none | simple simple-password }

The DLDP authentication mode used between the interfaces of the S6700 and the remote device is set.

By default, the DLDP authentication mode used between the interfaces of the S6700 and the remote device is none. That is, DLDP packets are not authenticated.

NOTE

Ensure that the local and remote devices use the same authentication mode and same authentication password; otherwise, the DLDP authentication fails. DLDP works normally only after the DLDP authentication succeeds.

----End

1.2.9 Checking the Configuration

Procedure

Step 1 Run the display dldp [ interface interface-type interface-number ] command to check the DLDP

configuration and neighbor entries.

----End

Example

Run the display dldp command, and you can view the operation mode of DLDP, interval for sending Advertisement packets, value of the Delay Down timer, interface disabling mode, and authentication mode of DLDP packets.

<Quidway> display dldp DLDP global status : enable DLDP interval : 5s DLDP work-mode : enhance DLDP authentication-mode : simple, password is 123 DLDP unidirectional-shutdown : auto DLDP delaydown-timer : 2s The number of enabled ports is 2. The number of global neighbors is: 2.

Interface XGigabitEthernet0/0/1

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

8

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

DLDP port state : advertisement DLDP link state : up The neighbor number of the port is 1. Neighbor mac address : 0000-0000-0100 Neighbor port index : 21 Neighbor state : two way Neighbor aged time : 13

Interface XGigabitEthernet0/0/2 DLDP port state : advertisement DLDP link state : up The neighbor number of the port is 1. Neighbor mac address : 0000-0000-1100 Neighbor port index : 22 Neighbor state : two way Neighbor aged time : 12

1.3 Resetting the DLDP Status

This section describes how to reset the DLDP status.

1.3.1 Establishing the Configuration Task

Applicable Environment

When a unidirectional link is detected, the corresponding interface enters the Disable state. The system prompts you to disable the interface or sets the interface state to DLDP Down automatically according to the configuration. To enable the interface to detect unidirectional links again, you can reset the DLDP state of the interface. The DLDP status of the interface after recovery depends on the physical status of the interface. If the physical status is Down, the DLDP status of the interface changes to Inactive. If the physical status is Up, the DLDP status changes to Active.

Pre-configuration Tasks

None.

Data Preparation

To reset the DLDP status, you need the following data.

No.

1 Type and number of each interface

2 Name of the interface group

Data

1.3.2 Resetting the DLDP Status Globally

Context

The dldp reset command takes effect only when DLDP is enabled globally and on interfaces.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

9

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

When you reset the DLDP status globally, the DLDP status is reset for all the disabled interfaces on the S6700.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

dldp reset

The DLDP status is reset globally.

----End

1.3.3 Resetting the DLDP Status of an Interface

Context

Procedure

Step 1 Run:

Step 2 Run:

If you reset the DLDP status on an interface or interface group, the DLDP status is reset for the interface or all the disabled interfaces in the interface group.

The dldp reset command takes effect only when DLDP is enabled globally and on interfaces.

system-view

The system view is displayed.

interface interface-type interface-number

The Ethernet interface view is displayed.

Or run:

port-group port-group-name

The interface group view is displayed.

Step 3 Run:

dldp reset

The DLDP status is reset on the interface or interface group.

----End

1.3.4 Checking the Configuration

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

10

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

Procedure

Step 1 Run the display dldp [ interface interface-type interface-number ] command to check the DLDP

configuration and neighbor entries.

----End

Example

Run the display dldp command, and you can view the status of an interface after the DLDP status is reset.

<Quidway> display dldp DLDP global status : enable DLDP interval : 5s DLDP work-mode : enhance DLDP authentication-mode : simple, password is 123 DLDP unidirectional-shutdown : auto DLDP delaydown-timer : 2s The number of enabled ports is 2. The number of global neighbors is: 2.

Interface XGigabitEthernet0/0/1 DLDP port state : advertisement DLDP link state : up The neighbor number of the port is 1. Neighbor mac address : 0000-0000-0100 Neighbor port index : 21 Neighbor state : two way Neighbor aged time : 13

Interface XGigabitEthernet0/0/2 DLDP port state : advertisement DLDP link state : up The neighbor number of the port is 1. Neighbor mac address : 0000-0000-1100 Neighbor port index : 22 Neighbor state : two way Neighbor aged time : 12

1.4 Maintaining DLDP

This section describes how to maintain DLDP.

1.4.1 Clearing the Statistics of DLDP

Context

CAUTION

Statistics of DLDP cannot be restored after you clear them. So, confirm the action before you use the command.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

11

SwitchB

XGE0/0/1

SwitchA

RX

TX

RX

TX

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

Procedure

Step 1 Run the reset dldp statistics [ interface interface-type interface-number ] command in the user

view to clear the statistics of DLDP packets on an interface.

----End

1.5 Configuration Examples

This section provides a configuration example of DLDP.

1.5.1 Example for Configuring DLDP

Networking Requirements

As shown in Figure 1-3, two S6700s are connected through a pair of optical fibers. On a fiber, RX indicate the receive end, and TX indicates the transmit end. DLDP is enabled on the interconnected interfaces. If the Rx fiber on Switch A fails, Switch A cannot receive optical signals. In this case, XGE 0/0/1 of Switch A becomes Down and cannot send or receive any packets. However, the Tx fiber on Switch B still sends optical signals, and Switch B can receive optical signals because the Tx fiber on Switch A is working normally. Therefore, the link status on Switch B is still Up. If Switch B does not receive any DLDP packet from Switch A within the neighbor aging time, XGE 0/0/1 of Switch B changes to unidirectional state. To prevent network faults, DLDP disables XGE 0/0/1 of Switch B.

Figure 1-3 Disconnection of one fiber

Configuration Roadmap

The configuration roadmap is as follows:

1. Configure the interfaces at both ends to work in non-auto-negotiation mode.

2. Enable DLDP.

3. Set the operation mode of DLDP.

4. Set the interval for sending Advertisement packets.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

12

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

5. Set the Delay Down timer.

6. Set the mode of disabling the interface when a unidirectional link is detected.

7. Set the authentication mode of DLDP packets.

Data Preparation

To complete the configuration, you need the following data:

l Type and number of each interface

l Interval for sending Advertisement packets

l Value of the Delay Down timer

Procedure

Step 1 Configure the interface on Switch A to work in non-auto negotiation mode.

<Quidway> system-view [Quidway] sysname SwitchA [SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] undo negotiation auto [SwitchA-XGigabitEthernet0/0/1] quit

Step 2 Enable DLDP globally

[SwitchA] dldp enable

Step 3 Enable DLDP on the interface.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] dldp enable [SwitchA-XGigabitEthernet0/0/1] quit

Step 4 Configure DLDP to work in enhanced mode.

[SwitchA] dldp work-mode enhance

Step 5 Set the interval for sending Advertisement packets to 80 seconds.

[SwitchA] dldp interval 80

Step 6 Set the timeout interval of the DelayDown timer to 4 seconds.

[SwitchA] dldp delaydown-timer 4

Step 7 Configure DLDP to automatically shut down the interface where a unidirectional link is detected.

[SwitchA] dldp unidirectional-shutdown auto

Step 8 Set the authentication mode of DLDP packets to simple password authentication and set the

password to 123456.

[SwitchA] dldp authentication-mode simple 12345

Repeat the preceding steps on Switch B.

Step 9 Verify the configuration.

After the configuration, run the display dldp command in the interface view, and you can find that the DLDP status of the interface is advertisement.

[SwitchA] display dldp interface xgigabitethernet 0/0/1

Interface XGigabitEthernet0/0/1 DLDP port state: advertisement DLDP link state: up The neighbor number of the port is: 1. Neighbor mac address:0018-2000-0083

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

13

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 1 DLDP Configuration

Neighbor port index:27 Neighbor state:two way Neighbor aged time:185

Remove the Rx fiber from Switch A to simulate a unidirectional link between XGE 0/0/1 of Switch A and XGE 0/0/1 of Switch B, as shown in Figure 1-3. You find that DLDP blocks the XGE 0/0/1 interface of Switch B.

# Run the display dldp on Switch A, and you can find that the DLDP status of XGE 0/0/1 is inactive. Run the display dldp on Switch B, and you can find that the DLDP status of XGE 0/0/1 is disable.

[SwitchA] display dldp interface xgigabitethernet 0/0/1

Interface XGigabitEthernet0/0/1 DLDP port state: inactive DLDP link state: down The neighbor number of the port is: 0 [SwitchB] display dldp interface xgigabitethernet 0/0/1

Interface XGigabitEthernet0/0/1 DLDP port state: disable DLDP link state: up The neighbor number of the port is: 0

----End

Configuration Files

l Configuration file of Switch A

# sysname SwitchA # dldp enable dldp interval 80 dldp delaydown-timer 4 dldp authentication-mode simple 12345 # interface XGigabitEthernet0/0/1 dldp enable undo negotiation auto # return

l Configuration file of Switch B

# sysname SwitchB # dldp enable dldp interval 80 dldp delaydown-timer 4 dldp authentication-mode simple 12345 # interface XGigabitEthernet0/0/1 dldp enable undo negotiation auto # return

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

14

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

2 Smart Link and Monitor Link Configuration

About This Chapter

This chapter describes the principle, configuration procedure, and configuration example of the Smart Link and Monitor Link.

2.1 Smart Link and Monitor Link

This section describes the concepts of Smart Link and Monitor Link.

2.2 Configuring a Smart Link Group

This section describes how to create a Smart Link group, enable the Smart Link group, configure the master and slave interfaces, enable the revertive switching, and configure functions related to Flush packets.

2.3 Configuring a Flow Control Policy in a Smart Link Group

This section describes how to configure the advanced functions of the Smart Link group, such as lock of data flows and manual switchover between links.

2.4 Configuring a Monitor Link Group

This section describes how to create a Monitor Link group, configure the uplink and downlink interfaces, and enable the revertive switching.

2.5 Maintaining the Smart Link

This section describes how to debug the Smart Link.

2.6 Configuration Examples

This section provides several configuration examples of the Smart Link.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

15

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

2.1 Smart Link and Monitor Link

This section describes the concepts of Smart Link and Monitor Link.

The dual-homing networking is often used. In this networking, STP blocks redundant links, providing redundancy. When the active link fails, the traffic is switched to the standby link. Although this scheme can implement redundancy, the performance cannot meet the requirements of users. Route convergence is performed within several seconds even if the Rapid Spanning Tree Protocol (RSTP) is used. The convergence speed is unfavorable for the high-end Ethernet switch used on the core of the carrier-class network.

To address the preceding problem, Huawei introduces Smart Link in dual-homing networking to implement redundancy of active and standby links and fast transition. In this manner, the high performance is ensured and the configuration is simplified. In addition, cooperation of interfaces is used.

The Monitor Link is introduced as a supplement to the Smart Link. This technology supports the association of interfaces. A Monitor Link group consists of an uplink interface and several downlink interfaces. If the uplink interface fails, the Monitor Link group automatically disables the downlink interfaces. When the uplink interface recovers, the downlink interfaces also recover.

2.2 Configuring a Smart Link Group

This section describes how to create a Smart Link group, enable the Smart Link group, configure the master and slave interfaces, enable the revertive switching, and configure functions related to Flush packets.

2.2.1 Establishing the Configuration Task

Applicable Environment

As shown in Figure 2-1, each device at the access and convergence layer is connected to two uplink devices. This networking mode provides higher security and reduces the duration of service interruption caused by the link failure.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

16

SwitchD

SwitchB

SwitchA

SwitchC

IP/MPLS

core

network

Smart Link group

SwitchE

User

1

Active link

Inactive link

User

3

User

2

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Figure 2-1 Application scenario of the Smart Link

Pre-configuration Tasks

Data Preparation

As shown in Figure 2-1, Switch D and Switch E are connected to user devices, and both are connected to Switch B and Switch C. Configure the Smart Link on Switch D and Switch E and add the two uplink interfaces to the respective Smart Link group to avoid loops. In this manner, interrupted services can be restored in milliseconds.

Before configuring the basic functions of a Smart Link group, complete the following task:

l Ensuring that the Multiple Spanning Tree Protocol (MSTP), Rapid Ring Protection

Protocol (RRPP), and Smart Ethernet Protection (SEP) are not enabled on the master and slave interfaces of the Smart Link group

To configure basic functions of the Smart Link group, you need the following data.

No.

Data

1 Number of the interface added to the Smart Link group

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

17

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

No. Data

2 ID of the Smart Link group

3 IDs of VLANs bound to the instance

4 Control VLAN ID contained in the Flush packet

5 (Optional) Password contained in the Flush packet

2.2.2 Creating and Enabling a Smart Link Group

Context

Do as follows on the S6700.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

A Smart Link group is created and the Smart Link group view is displayed.

The S6700 supports a maximum of 16 Smart Link groups.

Step 3 (Optional)Run:

protected-vlan reference-instance { instance-id1 [ to instance-id2 ] }&<1-10>

An instance is bound to the Smart Link group as the protected instance. The functions of the Smart link group take effect only on the VLANs bound to the protected instance. For details about STP instance configuration, see Configuring and Activating an MST Region.

NOTE

By default, a Smart Link group protects all VLANs and the protected-vlan reference-instance command is applicable only to multicast services.

----End

2.2.3 Configuring the Master and Slave Interfaces in a Smart Link Group

Context

The slave interface of a Smart Link group is blocked when the group is started.

An interface cannot be added to a Smart Link group in the following situations:

l The interface is a Rapid Ring Protection Protocol (RRPP) interface.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

18

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

l Spanning Tree Protocol (STP) is enabled on the interface.

l The interface has been added to an Eth-Trunk.

l The interface has been added to a Monitor Link group.

l The interface has been added to another Smart Link group.

l STP is configured on the interface.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

interface interface-type interface-number

The system view is displayed.

Step 3 Run:

stp disable

STP is disabled on the interface.

Step 4 Run:

quit

Return to the interface view.

Step 5 Run:

smart-link group group-id

The Smart Link group view is displayed.

Step 6 Run:

port interface-type interface-number master

An interface is added to the Smart Link group and is specified as the master interface.

Step 7 Run:

port interface-type interface-number slave

Another interface is added to the Smart Link group and is specified as the slave interface.

A Smart Link group consists of a master interface and a slave interface. By default, a Smart Link group does not have interfaces.

----End

2.2.4 Enabling the Sending of Flush Packets

Context

When the active and standby links of the Smart Link group switch, the existing forwarding entries no longer apply to the new topology. All the MAC address entries and ARP entries on the network need to be updated. Then the Smart Link group sends Flush packets to ask other devices to update the MAC address table and ARP entries.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

19

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Because manufacturers define the format of Flush packets differently, the Flush packets described here are used only for the intercommunication between Huawei S-series switches. In addition, the function of receiving Flush packets must be enabled on the remote switch.

If you run flush send control-vlan vlan-id [ password simple password ] command in the Smart Link group view, the Smart Link group is enabled to send Flush packets that contain the specified control VLAN ID and password. The VLAN ID specified by vlan-id must already exist on the S6700. If the specified VLAN ID does not exist on the S6700, Flush packets cannot be sent.

Do as follows on the S6700.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

The Smart Link group view is displayed.

Step 3 Run:

flush send control-vlan vlan-id [ password simple password ]

The S6700 is enabled to send Flush packets, and the control VLAN ID and password contained in Flush packets are set.

A control VLAN cannot be a VLAN mapping a load-balancing instance.

The control VLAN ID and password contained in Flush packets on both devices must be the same. That is, the control VLAN ID and password in Flush packets sent by the device must be the same as the control VLAN ID and password in Flush packets received by the device.

NOTE

After the flush send control-vlan command is run, the interface cannot be added to the control VLAN. You need to configure the interface to allow the packets of the control VLAN to pass through.

----End

2.2.5 (Optional) Configuring Load Balancing in a Smart Link Group

Context

Do as follows on the S6700.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

stp region-configuration

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

20

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

The Multiple Spanning Tree (MST) region view is displayed.

Step 3 Run:

instance instance-id vlan { vlan-id1 [ to vlan-id2 ] }&<1-10>

The mapping between an instance and VLANs is set.

A domain supports up to 49 instances, among which Instance 0 is the default instance and does not need to be created.

By default, all VLANs are mapped to instance 0.

Step 4 Run:

active region-configuration

The configuration of the MST region is activated.

After configuring the domain name, VLAN mapping table, or MSTP revision level, you must run the active region-configuration command for the configuration to take effect.

Step 5 Run:

quit

Return to the system view.

Step 6 Run:

smart-link group group-id

The Smart Link group view is displayed.

Step 7 Run:

load-balance instance { instance-id1 [ to instance-id2 ] } &<1-10> slave

Packets of the VLANs bound to the specified instance are sent from the slave interface to implement load balancing.

----End

2.2.6 (Optional) Enabling Revertive Switching and Setting the WTR Time

Context

When the active link in a Smart Link group fails, the traffic is automatically switched to the standby link. The original active link does not preempt the traffic but remains blocked after recovering from the fault. To switch the traffic back to the active link, you can adopt either of the following methods:

l Enable the revertive switching of a Smart Link group. The switching is automatically

performed after the revertive switching timer times out.

l Run the smart-link manual switch command to perform the link switching forcibly.

NOTE

The link switching is performed only when the two member interfaces in a group are both Up.

Do as follows on the S6700.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

21

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

The Smart Link group view is displayed.

Step 3 Run:

restore enable

Revertive switching is enabled for the Smart Link group.

By default, the revertive switching of the Smart Link group is disabled.

Step 4 (Optional) Run:

timer wtr wtr-time

The wait to recover (WTR) time of the Smart Link group is set.

By default, the WTR time of a Smart Link group is 60 seconds.

----End

2.2.7 (Optional) Enabling the Receiving of Flush Packets

Context

An interface receives Flush packets only when it is configured with the control VLAN ID and added to this VLAN.

Do as follows on SwitchA, SwitchB, and SwitchC shown in Figure 2-1.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

interface interface-type interface-number

The view of the downlink interface of the SwitchA, SwitchB, or SwitchC is displayed.

Step 3 Run:

smart-link flush receive control-vlan vlan-id [ password simple password ]

The interface is enabled to receive Flush packets, and the control VLAN ID and password contained in Flush packets are set.

The password is optional. If no password is specified, no password is used for authentication. When the control VLAN ID is changed, the password must also be changed.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

22

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

The control VLAN ID and password contained in Flush packets on both devices must be the same. That is, the control VLAN ID and password in Flush packets sent by the device must be the same as the control VLAN ID and password in Flush packets received by the device.

----End

2.2.8 (Optional) Setting the Holdtime of the Smart Link Switchover

Context

If the Smart Link switchover is performed because of temporary interruption, packet forwarding and system performance are affected. To address this problem, you can set the holdtime of the Smart Link switchover. If the interface of the Smart Link group repeatedly alternates between Up and Down states, the status of the Smart Link group is not immediately changed, but is changed according to the Up or Down status obtained by an interface of the Smart Link group until the holdtime expires. In this manner, Smart Link switchover caused by link interruption is suppressed.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

The Smart Link group view is displayed.

Step 3 Run:

smart-link hold-time hold-time

The holdtime of the Smart Link switchover is set.

----End

2.2.9 Enabling the Functions of the Smart Link Group

Context

After the functions of the Smart Link group are enabled, the standby interface in the group is blocked. After the functions of the Smart Link group are disabled, the blocked standby interface is recovered.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

23

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

The Smart Link group view is displayed.

Step 3 Run:

smart-link enable

The functions of the Smart Link group are enabled.

----End

2.2.10 Checking the Configuration

Procedure

l Run the display smart-link group { all | group-id } command to check information about

a Smart Link group.

l Run the display smart-link flush command to check information about the received Flush

packets.

----End

Example

Run the display smart-link group { all | group-id } command to check information about a Smart Link group. The following information is displayed:

<Quidway> display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Wtr-time is: 30 sec. Load-Balance Instance: 1 to 2 There is no protected-vlan reference-instance DeviceID: 0018-2000-0083 Control-vlan ID: 20 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------- XGigabitEthernet0/0/1 Master Active 1 2008/11/21 16:37:20 UTC +05:00 XGigabitEthernet0/0/2 Slave Inactive 2 2008/11/21 17:45:20 UTC +05:00

If the configuration is correct, the following information is displayed:

l The functions of the Smart Link group are enabled. Therefore, "Smart link group was

enabled" is displayed.

l The status of the interfaces in the Smart Link group is displayed, including the role of each

interface in the group, number of sent Flush packets, and time when the last Flush packets are sent. As shown in the preceding information, XGE 0/0/1 is the master interface in the Smart Link group; this interface is in the Forwarding state; it sent a Flush packet at 16:37 on 2008-11-21.

l The control VLAN ID contained in the sent Flush packets is 20.

Run the display smart-link flush command, and you can view information about received Flush packets.

<Quidway> display smart-link flush Receive flush packets count: 1191 Receive last flush interface: XGigabitEthernet0/0/1 Receive last flush packet time: 16:48:53 UTC+05:00 2009/02/23 Receive last flush packet source mac: 0018-0202-0088 Receive last flush packet control vlan ID: 20

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

24

SwitchA

SwitchE

SwitchB SwitchC

Smart Link

group

Active link

SwitchD

Inactive link

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

2.3 Configuring a Flow Control Policy in a Smart Link Group

This section describes how to configure the advanced functions of the Smart Link group, such as lock of data flows and manual switchover between links.

2.3.1 Establishing the Configuration Task

Applicable Environment

As shown in Figure 2-2, the basic functions and revertive switching of the Smart Link group are enabled on Switch D. During maintenance, the active link in the Smart Link group needs to be inspected. To prevent the inspection from affecting normal services, you need to configure a flow control policy for the Smart Link group. Through the configuration, you can forcibly lock the data flows to the standby link and switch them back to the active link after the inspection is complete.

Figure 2-2 Data flow control policy

Pre-configuration Tasks

Before configuring a flow control policy for the Smart Link group, complete the following task:

l 2.2 Configuring a Smart Link Group

Data Preparation

None.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

25

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

2.3.2 Locking Data Flows on the Master Interface

Context

CAUTION

If data flows are locked on the master interface, they cannot be switched to the slave interface automatically when the master interface fails. As a result, traffic is interrupted.

Do as follows on SwitchD shown in Figure 2-2.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

The Smart Link group view is displayed.

Step 3 Run:

smart-link lock

Data flows are locked on the master interface.

----End

2.3.3 Locking Data Flows on the Slave Interface

Context

CAUTION

If data flows are locked on the slave interface, they cannot be switched to the master interface automatically when the slave interface fails. As a result, traffic is interrupted.

Do as follows on SwitchD shown in Figure 2-2.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

26

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

The Smart Link group view is displayed.

Step 3 Run:

smart-link force

Data flows are locked on the slave interface.

----End

2.3.4 Switching Data Flows Manually

Context

Do as follows on SwitchD shown in Figure 2-2.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

smart-link group group-id

The Smart Link group view is displayed.

Step 3 Run:

smart-link manual switch

Data flows are switched to the other link.

To implement active/standby switchover between links, ensure that:

l The master interface and slave interface exist and are both in Up state.

l The smart-link command is not run to lock data streams.

The smart-link manual switch command can be repeatedly used in the Smart Link group view. Each time you run the command, the active/standby switchover is performed between links. Packet loss occurs during the switchover. The duration is measured in milliseconds.

----End

2.3.5 Checking the Configuration

Procedure

Step 1 Run the display smart-link group { all | group-id } command to check information about a

Smart Link group.

----End

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

27

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Example

Run the display smart-link group { all | group-id } command. If lock is displayed, it indicates that data flows are locked on the master interface. If force is displayed, it means that data flows are locked on the slave interface.

<Quidway> display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Link status:lock Wtr-time is: 30 sec. Load-Balance Instance: 1 to 2 There is no protected-vlan reference-instance DeviceID: 0018-2000-0083 Control-vlan ID: 20 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------- XGigabitEthernet0/0/1 Master Active 1 2008/11/21 16:37:20 UTC +05:00 XGigabitEthernet0/0/2 Slave Inactive 2 2008/11/21 17:45:20 UTC +05:00

2.4 Configuring a Monitor Link Group

This section describes how to create a Monitor Link group, configure the uplink and downlink interfaces, and enable the revertive switching.

2.4.1 Establishing the Configuration Task

Applicable Environment

As shown in Figure 2-3, the uplink of Switch A is faulty. Although Smart Link is enabled on Switch C, link switching is not performed because the active link is not faulty. In this case, services are interrupted. To enable the Smart Link group to respond more quickly to the faults of the uplink, you need to configure the Monitor Link function on the device connected to the active link to monitor the status of the uplink. When a fault occurs on an uplink, the active link of the Smart Link group is rapidly blocked. In this way, the Smart Link group can detect the fault and switch the traffic to the standby link to reduce the service interruption duration.

When the uplink interface belongs to a Smart Link group, the uplink interface is considered as faulty only if the maser and slave interfaces of the Smart Link group are in standby state (including the Down state).

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

28

IP/MPLS

core

network

SwitchB

SwitchA

SwitchC

Smart Link group

Monitor Link group

User1

GE0/0/1

GE0/0/2

GE0/0/3

GE0/0/1

GE0/0/2

GE0/0/2GE0/0/1

User2

Active link

Inactive link

Monitor Link group

Smart Link group

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Figure 2-3 Application scenario of the Monitor Link

Pre-configuration Tasks

Data Preparation

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

As shown in Figure 2-3, the link between Switch A and Router breaks. Although Smart Link is enabled on Switch C and Switch D, link switching is not performed because the active link does not fail. In this case, services are interrupted. To enable the Smart Link group to respond more quickly to the faults of the uplink, you need to configure the Monitor Link function on the device connected to the active link Monitor Link to monitor the status of the uplink. When a fault occurs, the active link of the Smart Link group is blocked quickly. The Smart Link group can then detect the fault and switch the traffic to the inactive link. This shortens the service interruption duration.

Before configuring the basic functions of the Monitor Link group, complete the following tasks:

l 2.2 Configuring a Smart Link Group

l Ensuring that no interface in the Monitor Link group is added to an Eth-Trunk, Smart Link

group and other Monitor Link group.

To configure the basic functions of the Monitor Link group, you need the following data.

29

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

No. Data

1 ID of the Monitor Link group

2 Number of each interface added to the Monitor Link group

3 Revertive switching interval of the Monitor Link group

4 ID of the Smart Link group

2.4.2 Creating a Monitor Link Group

Context

Do as follows on SwitchA and SwitchB.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

monitor-link group group-id

A Monitor Link group is created and the Monitor Link group view is displayed.

----End

2.4.3 Configuring the Uplink and Downlink Interfaces in a Monitor Link Group

Context

Do as follows on SwitchA and SwitchB.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

monitor-link group group-id

The Monitor Link group view is displayed. The S6700 supports a maximum of 16 Monitor Link groups.

Step 3 Run:

port interface-type interface-number { downlink [ downlink-id ] | uplink }

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

30

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

An interface is configured as the uplink interface or downlink interface of the Monitor Link group.

Or run:

smart-link group group-id uplink

An interface cannot be added to a Monitor Link group in the following situations:

l The interface is added to an Eth-Trunk.

l The interface is added to a Smart Link group.

l The interface is added to another Monitor Link group.

A Smart Link group is configured as the uplink interface of the Monitor Link group.

NOTE

The status of the uplink interface determines the status of the Monitor Link group. Therefore, after the downlink interface is added to the Monitor Link group, the result of the shutdown or undo shutdown command can be retained before the status of the uplink interface changes. When the status of the uplink interface changes, the status of the downlink interfaces changes as follows:

l When an uplink interface in Up state is added to the Monitor Link group or when an uplink interface

in Down state becomes Up, all the downlink interfaces in the Monitor Link group become Up.

l When an uplink interface is deleted from the Monitor Link group or when an uplink interface in Up

state becomes Down, all the downlink interfaces in the Monitor Link group become Down.

To add a Smart Link group to a Monitor Link group, you need to delete the existing uplink interface of the Monitor Link group. The Smart Link group and common interfaces are incompatible when serving as the uplink interface for a Monitor Link group.

----End

2.4.4 Setting the Revertive Switching Interval of a Monitor Link group

Context

Do as follows on SwitchA and SwitchB.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

monitor-link group group-id

The Monitor Link group view is displayed.

Step 3 Run:

timer recover-time recover-time

The interval of revertive switching is set.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

31

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

By default, the revertive switching of a Monitor Link group is enabled and the interval of revertive switching is 3 seconds.

----End

2.4.5 Checking the Configuration

Procedure

Step 1 Run the display monitor-link group { all | group-id } command to check information about a

Monitor Link group.

----End

Example

Run the display monitor-link group { all | group-id } [ | count ] [ | { begin | include | exclude } regular-expression ], and you can view basic information about the interfaces in the

Monitor Link group, including the role and status of the interfaces and the time when the interfaces become Up or Down for the last time.

<Quidway> display monitor-link group 1 Monitor Link group 1 information : Recover-timer is 5 sec. Member Role State Last-up-time Last-downtime GigabitEthernet0/0/1 UpLk UP 0000/00/00 00:00:00 UTC+00:00 0000/00/00 00:00:00 UTC+00:00 GigabitEthernet0/0/2 DwLk[1] DOWN 0000/00/00 00:00:00 UTC+00:00 0000/00/00 00:00:00 UTC+00:00

2.5 Maintaining the Smart Link

This section describes how to debug the Smart Link.

2.5.1 Debugging the Smart Link

Context

NOTE

Debugging affects the performance of the system. So, after debugging, run the undo debugging all command to disable it immediately.

Procedure

l Run the debugging smart-link { all | error | event | fsm-machine } [ group group-id ] to

enable debugging of the Smart Link.

l Run the debugging smart-link flush { all | receive | send } command to enable debugging

of Flush packets.

----End

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

32

SwitchC

SwitchB

XGE0/0/1

XGE0/0/2

SwitchA

XGE0/0/1

Smart Link group

Active link

Inactive link

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

2.6 Configuration Examples

This section provides several configuration examples of the Smart Link.

2.6.1 Example for Configuring Basic Functions of Smart Link

Networking Requirements

As shown in Figure 2-4, the user-side network is connected to the metropolitan area network (MAN) in dual-homing mode to guarantee the reliability of the network. In addition, ensure rapid switching of traffic over the standby link when the active link fails so that the duration of service interruption is limited to several milliseconds.

Figure 2-4 Networking for configuring basic functions of Smart Link

Configuration Roadmap

Data Preparation

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

The configuration roadmap is as follows:

1. Configure the Smart Link group on Switch A and add the uplink interfaces to the Smart Link group.

2. Enable revertive switching on Switch A.

3. Enable Switch A to send Flush packets.

4. Enable Switch B and Switch C to receive Flush packets.

5. Enable the Smart Link group on Switch A.

To complete the configuration, you need the following data:

33

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

l Smart Link group ID

l Number of the uplink interface of Switch A

l Control VLAN ID and password contained in Flush packets

Procedure

Step 1 On Switch A, configure the control VLAN and add interfaces to the control VLAN.

<SwitchA> system-view [SwitchA] vlan batch 10 [SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] port link-type trunk [SwitchA-XGigabitEthernet0/0/1] port trunk allow-pass vlan 10 [SwitchA-XGigabitEthernet0/0/1] quit [SwitchA] interface xgigabitethernet 0/0/2 [SwitchA-XGigabitEthernet0/0/2] port link-type trunk [SwitchA-XGigabitEthernet0/0/2] port trunk allow-pass vlan 10 [SwitchA-XGigabitEthernet0/0/2] quit

The configurations of Switch B and Switch C are similar to the configuration of Switch A, and are not mentioned here.

Step 2 Add the STP-disabled uplink interface to the Smart Link group and specify it as the master or

slave interface.

# Configure SwitchA.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] stp disable [SwitchA-XGigabitEthernet0/0/1] quit [SwitchA] interface xgigabitethernet 0/0/2 [SwitchA-XGigabitEthernet0/0/2] stp disable [SwitchA-XGigabitEthernet0/0/2] quit [SwitchA] smart-link group 1 [SwitchA-smlk-group1] port xgigabitethernet 0/0/1 master [SwitchA-smlk-group1] port xgigabitethernet 0/0/2 slave

Step 3 Enable revertive switching and set the WTR time.

# Configure Switch A.

[SwitchA-smlk-group1] restore enable [SwitchA-smlk-group1] timer wtr 30

Step 4 Enable the function of sending Flush packets.

# Configure Switch A.

[SwitchA-smlk-group1] flush send control-vlan 10 password simple 123

Step 5 Enable the Smart Link group on Switch A.

[SwitchA-smlk-group1] smart-link enable [SwitchA-smlk-group1] quit

Step 6 Enable the function of receiving Flush packets.

# Configure Switch B.

<SwitchB> system-view [SwitchB] interface xgigabitethernet 0/0/1 [SwitchB-XGigabitEthernet0/0/1] smart-link flush receive control-vlan 10 password

simple 123 [SwitchB-XGigabitEthernet0/0/1] quit

# Configure Switch C.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

34

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

<SwitchC> system-view [SwitchC] interface xgigabitethernet 0/0/1 [SwitchC-XGigabitEthernet0/0/1] smart-link flush receive control-vlan 10 password

simple 123 [SwitchC-XGigabitEthernet0/0/1] quit

Step 7 Verify the configuration.

# Run the display smart-link group command to view information about the Smart Link group on Switch A. If the following information is displayed, the configuration is successful.

l The Smart Link group is enabled.

l The control VLAN ID is 10.

l XGE 0/0/1 is the master interface and is in Active state, and XGE 0/0/2 is the slave interface

and is in Inactive state.

[SwitchA] display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Wtr-time is: 30 sec. There is no Load-Balance There is no protected-vlan reference-instance DeviceID: 0025-9e80-2494 Control-vlan ID: 10 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------

XGigabitEthernet0/0/1 Master Active 1 0000/00/00 00:00:00 UTC+00 :00 XGigabitEthernet0/0/2 Slave Inactive 0 0000/00/00 00:00:00 UTC+00 :00

# Run the shutdown command to shut down XGEt 0/0/1, and you can find that XGE 0/0/1 is in Inactive state and XGE 0/0/2 is in Active state.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] undo shutdown [SwitchA-XGigabitEthernet0/0/1]display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Wtr-time is: 30 sec. There is no Load-Balance There is no protected-vlan reference-instance DeviceID: 0025-9e80-2494 Control-vlan ID: 10 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------

XGigabitEthernet0/0/1 Master Inactive 1 0000/00/00 00:00:00 UTC+00 :00 XGigabitEthernet0/0/2 Slave Active 1 0000/00/00 00:00:00 UTC+00 :00

# Run the undo shutdown command to shut down XGE 0/0/1, and you can find that XGE 0/0/1 is in Active state and XGE 0/0/2 is in Inactive state.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] undo shutdown [SwitchA-XGigabitEthernet0/0/1] display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled There is no Load-Balance There is no protected-vlan reference-instance DeviceID: 0025-9e80-2494 Control-vlan ID: 10 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

35

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

XGigabitEthernet0/0/1 Master Active 2 0000/00/00 00:00:00 UTC+00 :00 XGigabitEthernet0/0/2 Slave Inactive 1 0000/00/00 00:00:00 UTC+00 :00

----End

Configuration Files

l Configuration file of Switch A

# sysname Switch A # vlan batch 10 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 10 stp disable # smart-link group 1 restore enable smart-link enable port XGigabitEthernet0/0/1 master port XGigabitEthernet0/0/2 slave timer wtr 30 flush send control-vlan 10 password simple 123 # return

l Configuration file of Switch B

# sysname SwitchB # vlan batch 10 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 smart-link flush receive control-vlan 10 password simple 123 # return

l Configuration file of Switch C

# sysname SwitchC # vlan batch 10 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 smart-link flush receive control-vlan 10 password simple 123 # return

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

36

MAN

SwitchC

SwitchB

XGE0/0/1

XGE0/0/2

Active link

Inactive link

SwitchA

XGE0/0/1

Smart Link

group

VLAN

100 500

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

2.6.2 Example for Configuring Load Balancing Between Active and Standby Links of a Smart Link Group

Networking Requirements

As shown in Figure 2-5, packets of VLAN 100 and VLAN 500 are transmitted through the standby link, and packets of other VLANs are transmitted through the active link. To ensure network reliability, the customer network is dual-homed to the MAN. Packets of VLAN 100 and VLAN 500 are transmitted through the standby link, and packets of other VLANs are transmitted through the active link. When the active link fails, packets on the active link can be switched to the standby link quickly. When the standby link fails, packets of VLAN 100 and VLAN 500 can be switched to the active link quickly. The service interruption duration is restricted to millisecond level.

Figure 2-5 Networking diagram for configuring load balancing between active and standby links of a Smart Link group

Configuration Roadmap

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

The configuration roadmap is as follows:

1. On Switch A, configure Smart Link multi-instance and add the uplink interfaces to the Smart Link group.

2. Configure load balancing on Switch A.

3. Enable revertive switching on Switch A.

4. Enable Switch A to send Flush packets.

5. Enable Switch B and Switch C to receive Flush packets.

6. Enable Smart Link on Switch A.

37

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Data Preparation

To complete the configuration, you need the following data:

l IDs of instances and IDs of the VLANs bound to the instances on Switch A

l ID of a Smart Link group

l Numbers of the uplink interfaces on Switch A

l Control VLAN ID and password contained in Flush packets

Procedure

Step 1 On Switch A, configure the control VLAN and add the uplink interfaces to the control VLAN.

<SwitchA> system-view [SwitchA] vlan batch 10 100 500 [SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] port link-type trunk [SwitchA-XGigabitEthernet0/0/1] port trunk allow-pass vlan 10 100 500 [SwitchA] interface xgigabitethernet 0/0/2 [SwitchA-XGigabitEthernet0/0/2] port link-type trunk [SwitchA-XGigabitEthernet0/0/2] port trunk allow-pass vlan 10 100 500 [SwitchA-XGigabitEthernet0/0/2] quit

The configurations of Switch B and Switch C are similar to the configuration of Switch A, and are not mentioned here.

Step 2 Configure VLAN mapping on Switch A.

[SwitchA] stp region-configuration [SwitchA-mst-region] instance 10 vlan 100 500 [SwitchA-mst-region] active region-configuration [SwitchA-mst-region] quit

Step 3 Add the uplink interfaces to the Smart Link group and specify the master and slave interfaces.

Ensure that STP is disabled on the uplink interfaces.

# Configure Switch A.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] stp disable [SwitchA-XGigabitEthernet0/0/1] quit [SwitchA] interface xgigabitethernet 0/0/2 [SwitchA-XGigabitEthernet0/0/2] stp disable [SwitchA-XGigabitEthernet0/0/2] quit [SwitchA] smart-link group 1 [SwitchA-smlk-group1] port xgigabitethernet 0/0/1 master [SwitchA-smlk-group1] port xgigabitethernet 0/0/2 slave

Step 4 Configure load balancing on Switch A.

[SwitchA-smlk-group1] load-balance instance 10 slave

Step 5 Enable the revertive switching and set the wait-to-restore (WTR) time.

# Configure Switch A.

[SwitchA-smlk-group1] restore enable [SwitchA-smlk-group1] timer wtr 30

Step 6 Enable the sending of Flush packets.

# Configure Switch A.

[SwitchA-smlk-group1] flush send control-vlan 10 password simple 123

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

38

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Step 7 Enable Smart Link on Switch A.

[SwitchA-smlk-group1] smart-link enable [SwitchA-smlk-group1] quit

Step 8 Enable the receiving of Flush packets.

# Configure Switch B.

<SwitchB> system-view [SwitchB] interface xgigabitethernet 0/0/1 [SwitchB-XGigabitEthernet0/0/1] smart-link flush receive control-vlan 10 password

simple 123 [SwitchB-XGigabitEthernet0/0/1] quit

# Configure Switch C.

<SwitchC> system-view [SwitchC] interface xgigabitethernet 0/0/1 [SwitchC-XGigabitEthernet0/0/1] smart-link flush receive control-vlan 10 password

simple 123 [SwitchC-XGigabitEthernet0/0/1] quit

Step 9 Verify the configuration.

# Run the display smart-link group command to view information about the Smart Link group on Switch A. If the following information is displayed, it indicates that the configuration is successful.

l The Smart Link function is enabled.

l The control VLAN ID is 10.

l XGE 0/0/1 is the master interface and is in Active state, and XGE 0/0/2 is the slave interface

and is in Inactive state. The load balancing function is configured.

[SwitchA] display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Wtr-time is: 30 sec. Load-Balance Instance: 10 There is no protected-vlan reference-instance DeviceID: 0025-9e80-2494 Control-vlan ID: 10 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------

XGigabitEthernet0/0/1 Master Active 1 0000/00/00 00:00:00 UTC+00 :00 XGigabitEthernet0/0/2 Slave Inactive 0 0000/00/00 00:00:00 UTC+00 :00

# Run the shutdown command to shut down XGE 0/0/1, and you can find that XGE 0/0/1 is in Inactive state and XGE 0/0/2 is in Active state.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] shutdown [SwitchA-XGigabitEthernet0/0/1] display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Wtr-time is: 30 sec. Load-Balance Instance: 10 There is no protected-vlan reference-instance DeviceID: 0025-9e80-2494 Control-vlan ID: 10 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------

XGigabitEthernet0/0/1 Master Inactive 1 0000/00/00 00:00:00 UTC+00 :00

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

39

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

XGigabitEthernet0/0/2 Slave Active 1 0000/00/00 00:00:00 UTC+00 :00

# Run the undo shutdown command to enable XGE 0/0/1 and wait for 30 seconds. Then you can find that XGE 0/0/1 is in Active state and XGE 0/0/2 is in Inactive state.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] shutdown [SwitchA-XGigabitEthernet0/0/1] display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Wtr-time is: 30 sec. Load-Balance Instance: 10 There is no protected-vlan reference-instance DeviceID: 0025-9e80-2494 Control-vlan ID: 10 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------

XGigabitEthernet0/0/1 Master Active 2 0000/00/00 00:00:00 UTC+00 :00 XGigabitEthernet0/0/2 Slave Inactive 1 0000/00/00 00:00:00 UTC+00 :00

----End

Configuration Files

l Configuration file of Switch A

# sysname SwitchA # vlan batch 10 100 500 # stp region-configuration instance 10 vlan 10 100 500 active region-configuration # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 100 500 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 10 100 500 stp disable # smart-link group 1 load-balance instance 10 slave restore enable smart-link enable port XGigabitEthernet0/0/1 master port XGigabitEthernet0/0/2 slave timer wtr 30 flush send control-vlan 10 password simple 123 # return

l Configuration file of Switch B

# sysname SwitchB # vlan batch 10 100 500 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 100 500

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

40

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

smart-link flush receive control-vlan 10 password simple 123 # return

l Configuration file of Switch C

# sysname SwitchC # vlan batch 10 100 500 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 100 500 smart-link flush receive control-vlan 10 password simple 123 # return

2.6.3 Example for Applying the Smart Link Functions

Networking Requirements

As shown in Figure 2-6, Switch C on the MAN is connected to user networks. It accesses the backbone network through uplink devices Switch A and Switch B in dual-homed mode.

Switch A and Switch C are connected to uplink devices in dual-homed mode. One out of each link pair needs to be blocked to prevent loops. When the active link fails, the data flows can be rapidly switched to the standby link to ensure normal services.

In addition, a monitoring mechanism is required to prevent service interruption caused by faults of the uplink. This monitoring mechanism enables the downlink to quickly detect the fault of the uplink. When the uplink fails, link switching can be performed immediately to shorten the duration of service interruption.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

41

IP/MPLS

core

network

SwitchB

SwitchA

SwitchC

Smart Link group

Monitor Link group

User1

XGE0/0/1

XGE0/0/2

XGE0/0/3

XGE0/0/1

XGE0/0/3

XGE0/0/2

XGE0/0/1

User2

Active link

Inactive link

Monitor Link group

Smart Link group

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Figure 2-6 Networking of Smart Link application

Configuration Roadmap

Data Preparation

The configuration roadmap is as follows:

1. Configure Smart Link groups on Switch A and Switch C, and add uplink interfaces to the groups.

2. Configure Monitor Link groups on Switch A and Switch B.

3. Enable Switch A and Switch C to send Flush packets.

4. Enable Switch A and Switch C to receive Flush packets.

To complete the configuration, you need the following data:

l Numbers of interfaces on Switch A, Switch B, and Switch C

l IDs of the Smart Link groups

l Control VLAN ID and password contained in Flush packets

l IDs of the Monitor Link groups and the numbers of the downlinks

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

42

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

Procedure

Step 1 Configure the same control VLAN on Switch A, Switch B, and Switch C. Add the interfaces of

the Smart Link group or Monitor Link group to this VLAN.

The configuration procedures are not mentioned here. For details, see "VLAN Configuration" in the Quidway S6700 Series Ethernet Switches Configuration Guide - Ethernet.

Step 2 Create Smart Link groups and enable the functions of the groups.

# Configure Switch A.

<SwitchA> system-view [SwitchA] smart-link group 1 [SwitchA-smlk-group1] quit

# Configure Switch C.

<SwitchC> system-view [SwitchC] smart-link group 2 [SwitchC-smlk-group2] quit

Step 3 Add interfaces to Smart Link groups and specify the master and slave interfaces of each Smart

Link group

# Configure Switch A.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] stp disable [SwitchA-XGigabitEthernet0/0/1] quit [SwitchA] interface xgigabitethernet 0/0/2 [SwitchA-XGigabitEthernet0/0/2] stp disable [SwitchA-XGigabitEthernet0/0/2] quit [SwitchA]smart-link group 1 [SwitchA-smlk-group1] port xgigabitethernet 0/0/1 master [SwitchA-smlk-group1] port xgigabitethernet 0/0/2 slave

# Configure Switch C.

[SwitchC] interface xgigabitethernet 0/0/1 [SwitchC-XGigabitEthernet0/0/1] stp disable [SwitchC-XGigabitEthernet0/0/1] quit [SwitchC] interface xgigabitethernet 0/0/2 [SwitchC-XGigabitEthernet0/0/2] stp disable [SwitchC-XGigabitEthernet0/0/2] quit [SwitchC] smart-link group 2 [SwitchC-smlk-group2] port xgigabitethernet 0/0/1 master [SwitchC-smlk-group2] port xgigabitethernet 0/0/2 slave

Step 4 Enable revertive switching and set the interval of revertive switching.

# Configure Switch A.

[SwitchA-smlk-group1] restore enable [SwitchA-smlk-group1] timer wtr 30

# Configure Switch C.

[SwitchC-smlk-group2] restore enable [SwitchC-smlk-group2] timer wtr 30

Step 5 Enable the sending and receiving of Flush packets.

# Configure Switch A.

[SwitchA-smlk-group1] flush send control-vlan 10 password simple 123 [SwitchA-smlk-group1] quit [SwitchA] interface xgigabitethernet 0/0/3

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

43

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

[SwitchA-XGigabitEthernet0/0/3] smart-link flush receive control-vlan 10 password simple 123 [SwitchA-XGigabitEthernet0/0/3] quit

# Configure Switch B.

<SwitchB> system-view [SwitchB] interface xgigabitethernet 0/0/3 [SwitchB-XGigabitEthernet0/0/3] smart-link flush receive control-vlan 10 password

simple 123 [SwitchB-XGigabitEthernet0/0/3] quit

# Configure Switch C.

[SwitchC-smlk-group2] flush send control-vlan 10 password simple 123 [SwitchC-smlk-group2] quit

Step 6 Enabling the Functions of the Smart Link Group

# Configure Switch A.

[SwitchA] smart-link group 1 [SwitchA-smlk-group1] smart-link enable [SwitchA-smlk-group1] quit

# Configure Switch C.

[SwitchC] smart-link group 2 [SwitchC-smlk-group2] smart-link enable [SwitchC-smlk-group2] quit

Step 7 Create Monitor Link groups and add the uplink and downlink interfaces to the Monitor Link

groups.

# Configure Switch A.

[SwitchA] monitor-link group 1 [SwitchA-mtlk-group1] smart-link group 1 uplink [SwitchA-mtlk-group1] port xgigabitethernet 0/0/3 downlink 1

# Configure Switch B.

[SwitchB] monitor-link group 2 [SwitchB-mtlk-group2] port xgigabitethernet 0/0/1 uplink [SwitchB-mtlk-group2] port xgigabitethernet 0/0/3 downlink 1

Step 8 Set the revertive switching interval of the Monitor Link groups.

# Configure Switch A.

[SwitchA-mtlk-group1] timer recover-time 10 [SwitchA-mtlk-group1] quit

# Configure Switch B.

[SwitchB-mtlk-group2] timer recover-time 10 [SwitchB-mtlk-group2] quit

Step 9 Verify the configuration.

[SwitchA] display smart-link group 1 Smart Link group 1 information : Smart Link group was enabled Wtr-time is: 30 sec. There is no Load-Balance There is no protected-vlan reference-instance DeviceID: 0025-9e80-2494 Control-vlan ID: 10 Member Role State Flush Count Last-Flush-Time

----------------------------------------------------------------------

XGigabitEthernet0/0/1 Master Active 1 0000/00/00 00:00:00 UTC +00 :00

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

44

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

XGigabitEthernet0/0/2 Slave Inactive 0 0000/00/00 00:00:00 UTC +00 :00 [SwitchA] display monitor-link group 1 Monitor Link group 1 information : Recover-timer is 10 sec. Member Role State Last-up-time Last-down-tim e Smart-link1 UpLk UP 0000/00/00 00:00:00 UTC+00:00 0000/0 0/00 00:00:00 UTC+00:00 XGigabitEthernet0/0/3 DwLk[1] DOWN 0000/00/00 00:00:00 UTC+00:00 0000/0 0/00 00:00:00 UTC+00:00

----End

Configuration Files

l Configuration file of Switch A

# sysname SwitchA # vlan batch 10 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 10 stp disable # interface XGigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 10 smart-link flush receive control-vlan 10 password simple 123 # smart-link group 1 restore enable smart-link enable port XGigabitEthernet0/0/1 master port XGigabitEthernet0/0/2 slave timer wtr 30 flush send control-vlan 10 password simple 123 # monitor-link group 1 smart-link group 1 uplink port XGigabitEthernet0/0/3 downlink 1 timer recover-time 10 # return

l Configuration file of Switch B

# sysname SwitchB # vlan batch 10 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 # interface XGigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 10 smart-link flush receive control-vlan 10 password simple 123 #

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

45

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 2 Smart Link and Monitor Link Configuration

monitor-link group 2 port XGigabitEthernet0/0/1 uplink port XGigabitEthernet0/0/3 downlink 1 timer recover-time 10 # return

l Configuration file of Switch C

# sysname SwitchC # vlan batch 10 # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 10 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 10 stp disable # smart-link group 2 restore enable smart-link enable port XGigabitEthernet0/0/1 master port XGigabitEthernet0/0/2 slave timer wtr 30 flush send control-vlan 10 password simple 123 # return

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

46

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3 RRPP Configuration

About This Chapter

The Rapid Ring Protection Protocol (RRPP) features fast convergence, because the convergence time is irrelevant to the number of the nodes on the ring. In addition, RRPP multi-instance supports load balancing of different types of traffic.

3.1 Overview of RRPP

RRPP is a link layer protocol applied to an Ethernet ring. RRPP features fast convergence and can prevent broadcast storms caused by data loops.

3.2 RRPP Features Supported by the S6700

This section describes the RRPP features supported by the S6700.

3.3 Configuring RRPP Functions

Through RRPP, devices on an Ethernet ring are configured to be the nodes with different roles on RRPP rings. The nodes on an RRPP ring detect the ring status and transmit topology changes by sending and receiving RRPP protocol packets. The master node on an RRPP ring blocks or opens secondary ports according to the ring status. In this manner, if a fault occurs on a node or a link on the RRPP ring, traffic can be fast switched to the backup link and data loops can be prevented.

3.4 Configuring RRPP Multi-Instance

RRPP multi-instance is based on domains. Multiple RRPP domains can be configured on a physical ring. In a domain, all ports, nodes, and topologies must comply with basic RRPP principles. Therefore, a physical ring has multiple master nodes. Each master node independently detects the completeness of the physical ring and blocks or unblocks its own secondary ports accordingly.

3.5 Maintaining RRPP

Commands of clearing statistics helps to locate the RRPP faults on a device.

3.6 Configuration Examples

This section provides several configuration examples of RRPP.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

47

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3.1 Overview of RRPP

RRPP is a link layer protocol applied to an Ethernet ring. RRPP features fast convergence and can prevent broadcast storms caused by data loops.

For most LANs, the ring network is adopted to provide high reliability. A fault of any single node on the ring, however, affects the service. In general, the technology of the ring network is the Resilient Packet Ring (RPR) or Ethernet ring. A special hardware is required to adopt RPR, which increases the costs. Therefore, increasing number of LANs are moving towards adopting the Ethernet ring as it is technologically advanced and the costs involved are comparatively less.

The RSTP/MSTP and Rapid Ring Protection Protocol (RRPP) are generally adopted to address the Layer 2 network loop. RSTP/MSTP is highly adaptable; however, the convergence time is measured in seconds.

RRPP is a link layer protocol used for Ethernet rings. RRPP can prevent broadcast storms caused by data loops on a complete Ethernet ring. When a link on the Ethernet ring fails, nodes on the ring can restore communication immediately through the backup link.

Compared with other Ethernet ring technologies, RRPP has the following features:

l Convergence time is not related to the number of nodes on a ring network. Thus, RRPP

can be applied to a large-scale network.

l RRPP can prevent broadcast storm caused by loops when an Ethernet ring network is

complete.

l On an Ethernet ring network, when a link is disconnected, a backup link immediately

resumes the normal communication between nodes.

3.2 RRPP Features Supported by the S6700

This section describes the RRPP features supported by the S6700.

Basic RRPP Functions

The concepts of RRPP are described based on Figure 3-1.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

48

RRPP Domain

RRPP Sub-Ring 2

RRPP Sub-Ring 1

RRPP Major-Ring

Master Node

Edge Transit

Node

Edge Transit

Node

Master

Node

Master

Node

Transit Node

SwitchA

SwitchB

SwitchC

SwitchD

SwitchE

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Figure 3-1 Application of crossed RRPP rings

l RRPP domain

An RRPP domain consists of a group of interconnected switches with the same domain ID and control VLAN ID. An RRPP domain consists of the elements such as the RRPP major ring and subring, control VLAN, master node, transit node, and primary port and secondary port.

An RRPP domain is identified by its ID, which is an integer.

l RRPP ring

Physically, an RRPP ring corresponds to an Ethernet ring. An RRPP ring is a part of its RRPP domain. An RRPP domain consists of one RRPP ring or multiple crossed RRPP rings.

l RRPP major ring and subring

If an RRPP domain consists of multiple crossed RRPP rings, you can configure one ring as the major ring and other rings as subrings by setting their levels.

An RRPP domain has only one major ring.

Protocol packets of subrings are transmitted in the major ring as data packets, and protocol packets of the major ring are transmitted only in the major ring.

l Control VLAN

A VLAN that transmits RRPP protocol packets in an RRPP domain is called a control VLAN. A control VLAN can contain only RRPP ports.

An RRPP domain is configured with two control VLANs: the primary control VLAN and the sub control VLAN. You need to specify only the primary control VLAN. The VLAN whose ID is one more than the ID of the primary control VLAN becomes the sub control VLAN.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

49

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Different from a control VLAN, a data VLAN is used to transmit data packets. The data VLAN can contain both the RRPP ports and non-RRPP ports.

l Master node

On an Ethernet ring, each switch is called a node. Each RRPP ring must have only one master node.

l Transit node

On an RRPP ring, all nodes except the master node are transit nodes.

A transit node monitors the status of its directly connected RRPP links. When the link status changes, the transit node informs the master node. The master node then determines the policy for reacting to the change of the link status.

l Edge node and assistant edge node

An edge node or assistant edge node is configured on a subring. It functions as a transit node on the major ring.

On a subring, either of the two nodes that are on the crossed points of the major ring and subring can be configured as the edge node. A subring must have only one edge node. Then, the other node is the assistant edge node.

l Primary interface and secondary interface

On the master node and transit nodes, you can configure one of the two interfaces connected to the Ethernet ring as the primary interface and the other as the secondary interface.

l Common interface and edge interface

On an edge node or an assistant edge node, the interface shared by the subring and major ring is called the common interface. An interface located only on a subring is called an edge interface.

Hello Timer and Fail Timer

When RRPP detects the link status on the Ethernet ring, the master node sends Hello packets according to the Hello timer and determines whether the secondary interface receives the Hello packets according to the Fail timer.

l The value of the Hello timer specifies the interval at which the master node sends Hello

packets from the primary interface.

l The Fail timer specifies the maximum interval between two Hello packets received on the

secondary interface.

RRPP Multi-Instance

l Multi-instance

In the RRPP networking, one RRPP ring contains only one master node. When the master node is in Complete state, the blocked secondary interface rejects all the data packets. In this manner, all the data packets are transmitted through the same path on the RRPP ring. The link of the secondary interface on the master node is idle, which wastes bandwidth.

The RRPP multi-instance feature is implemented based on domains. In the RRPP domain, all the interfaces, nodes, and topologies conform to the RRPP principle. In the RRPP multiinstance networking, multiple domains can be configured on an RRPP ring.

Each domain contains one or more instances, and each instance represents a VLAN range. The VLANs in a domain are protected VLANs in the RRPP domain. A protected VLAN can be a data VLAN, the control VLAN on the major ring, or the control VLAN on a subring in the RRPP domain.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

50

Master 2

Master 1

P

S(Block)

SwitchA

Backbone

network

P

S(Block)

Block

P

S

Primary port

Secondary port

Instance2: VLAN 201-400

Instance1: VLAN 100-200

Instance1:

VLAN 100-200

Instance2:

VLAN 201-400

SwitchC

SwitchE

SwitchD

SwitchB

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

In the RRPP multi-instance networking, a ring can contain multiple master nodes. Load balancing and link backup can be implemented based on the blocking state of the secondary interface on the master node.

As shown in Figure 3-2, Switch A, Switch B, Switch C, Switch D, and Switch E form a ring with multiple instances. Two domains are configured on the ring. Switch C is the master node in domain 2 and Switch D is the master node in domain 1. The primary and secondary interfaces on each master node are marked in Figure 3-2.

Domain 1 is configured with instance 1, which represents VLANs 100 to 200. When Switch D is in Complete state, its secondary interface is blocked. Therefore, packets of VLANs 100 to 200 are transmitted though the path Switch A -> Switch C -> Switch E.

Domain 2 is configured with Instance 2, which represents VLANs 201 to 400. When Switch C is in Complete state, its secondary interface is blocked. Therefore, packets of VLANs 201 to 400 are transmitted though the path Switch B -> Switch D -> Switch E.

Figure 3-2 Networking diagram of RRPP multi-instance

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

l Ring group

A ring group is configured for the subrings in the networking of crossed rings with multiple RRPP instances.

In the networking of crossed rings with multiple RRPP instances, if multiple subrings exist, the following may occur:

51

SwitchE

domain 1

domain 2

Edge

Assistant

Domain 1 Major ring 1

Domain 2 Major ring 1

Domain 2 sub ring 2

Domain 2 sub ring 3

Domain 1 sub ring 2

Domain 1 sub ring 3

Master

SwitchA

SwitchF

SwitchB

SwitchC

SwitchD

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Multiple subrings share the same edge node and the same assistant edge node. In addition, the edge node and assistant edge node are located on the same major ring. That is, the EdgeHello packets of the edge node are transmitted to the assistant edge node along the same path.

Figure 3-3 Ring group in RRPP multi-instance application

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

To reduce the number of Edge-Hello packets sent and received on a switch and improve the system performance, you can add the subrings with the same edge node and same assistant edge node to a ring group. Then configure a member subring to add Edge-Hello packets to check the channel of protocol packets on the major ring.

There are four subrings in Figure 3-3, namely, ring 2 in domain 1, ring 3 in domain 1, ring 2 in domain 2, and ring 3 in domain 2. The subrings have the same major ring; therefore, they can be added to a ring group. After the subrings are added to a ring group, only one subring sends Edge-Hello packets, reducing the number of Edge-Hello packets.

l Link-Up-Delay timer

To avoid flapping on the ring caused by frequent changes of transmission paths, you can set a Link-Up-Delay timer on the master node.

If master node receives its own Hello packet before the Failed timer expires, it transits to the Complete state after a certain delay. This reduces link flapping on the ring.

The master node processes the Hello packets received from the secondary interface only after the Link-Up-Delay timer expires.

52

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3.3 Configuring RRPP Functions

Through RRPP, devices on an Ethernet ring are configured to be the nodes with different roles on RRPP rings. The nodes on an RRPP ring detect the ring status and transmit topology changes by sending and receiving RRPP protocol packets. The master node on an RRPP ring blocks or opens secondary ports according to the ring status. In this manner, if a fault occurs on a node or a link on the RRPP ring, traffic can be fast switched to the backup link and data loops can be prevented.

3.3.1 Establishing the Configuration Task

If you have already enabled RRPP on a port, you cannot enable STP on it. That is, the two protocols cannot coexist on a port.

Applicable Environment

RRPP is used for the networking of the single-ring or multiple crossed rings. When configuring RRPP, you must configure all nodes on the RRPP ring.

NOTE

The RRPP or the STP can not coexist on a port.

RRPP contains no auto election mechanism. Therefore, to ensure the detection and protection of the ring network through RRPP, you must correctly configure each node on the ring.

Pre-Configuration Tasks

Before configuring RRPP functions, complete the following tasks:

l Establishing the ring topology

l Configuring the link attributes of the interface

Data Preparation

To configure RRPP functions, you need the following data.

No.

1 ID of the RRPP domain

2 ID of the control VLAN in the RRPP domain

3 IDs of all RRPP rings in the RRPP domain

Data

4 Values of the Hello timer and Fail timer in the RRPP domain

5 Port name of the RRPP ring

3.3.2 Creating Instances

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

53

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Context

Do as follows on the S6700 that you want to add to an RRPP domain with multiple instances.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

stp region-configuration

The MST region view is displayed.

Step 3 Run the following commands as required.

l Run:

instance instance-id vlan { vlan-id1 [ to vlan-id2 ] }&<1-10>

The mapping between an instance and VLANs is configured.

l Run:

vlan-mapping modulo modulo

The default algorithm is used to determine the mapping between instances and VLANs.

The vlan-mapping modulo command is used to map a VLAN to the instance with the ID being (VLAN ID - 1)%modulo + 1. Assume that modulo is set to 16. The S6700 maps VLAN 1 to instance 1, VLAN 2 to instance 2, VLAN 16 to instance 16, and so forth.

The control VLANs of the major ring and the subrings must be contained in the VLAN list.

A domain supports up to 49 instances, among which instance 0 is the default instance and does not need to be created.

By default, all VLANs are mapped to instance 0.

Step 4 Run:

active region-configuration

The configuration of the MST region is activated.

----End

3.3.3 Configuring Interfaces on the RRPP Ring

Context

Do as follows on the S6700 on which interfaces need to be added to the RRPP ring.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

54

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Step 2 Run:

interface interface-type interface-number

The interface view is displayed.

RRPP rings can be configured only on, and Eth-Trunk interfaces.

An interface cannot be configured as an RRPP interface if the Smart Link, LDT, MUX VLAN or MSTP is configured on the interface.

Step 3 (Optional) Run:

port link-type trunk

The interface is configured as a trunk interface.

By default, an interface is a hybrid interface.

An RRPP interface needs to allow packets of control VLANs and data VLANs to pass through; therefore, the RRPP interface must be configured as a trunk interface or hybrid interface.

Step 4 Run:

port trunk allow-pass vlan { { vlan-id1 [ to vlan-id2 ] } &<1-10> | all }

or run:

port hybrid tagged vlan { { vlan-id1 [ to vlan-id2 ] }&<1-10> | all }

IDs of the data VLANs whose packets are allowed to pass through the RRPP interface are specified.

After you specify the control VLAN by running the control-vlan command in the RRPP domain view and run the ring node-mode command, all the interfaces on the RRPP ring allow packets of this control VLAN to pass through. Therefore, you need only to specify the data VLANs in this step.

Step 5 Run:

stp disable

STP is disabled on the RRPP interface.

By default, STP is enabled on all interfaces of the S6700. Before creating an RRPP ring, disable STP on the interfaces that need to be added to the RRPP ring.

----End

3.3.4 Creating the RRPP Domain

A group of connected switches that have the same domain ID and the same control VLANs constitute an RRPP domain. An RRPP domain mainly consists of RRPP rings, control VLANs, and master nodes.

Context

Do as follows on all switches in the RRPP domain:

Procedure

Step 1 Run:

system-view

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

55

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The RRPP domain is created.

When creating the RRPP domain, you must specify the domain ID. If the domain exists, the domain view is directly displayed.

You can create up to eight domains on S6700.

----End

3.3.5 Creating the Control VLAN

Each RRPP ring has two control VLANs. The major control VLAN transmits mainly the protocol packets of the major ring; the sub-control VLAN transmits mainly the protocol packets of the sub-rings.

Context

Procedure

Step 1 Run:

Step 2 Run:

Step 3 Run:

Do as follows on all switches in the RRPP domain:

system-view

The system view is displayed.

rrpp domain domain-id

The domain view is displayed.

control-vlan vlan-id

The control VLAN is created.

The control VLAN specified by vlan-id and the sub-control VLAN specified by vlan-id+1 must be uncreated and not used in port trunk, mapping, or stacking mode.

An RRPP domain is configured with two control VLANs: the primary control VLAN and the sub control VLAN. You need to specify only the primary control VLAN. The VLAN whose ID is one more than the ID of the primary control VLAN becomes the sub control VLAN.

After configuring the control VLAN, you cannot directly modify it. You can only delete the control VLAN by deleting the domain, and then reconfigure the control VLAN. The sub-control VLAN is also deleted when you delete the domain.

NOTE

DHCP cannot be configured for a control VLAN.

----End

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

56

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3.3.6 Specifying Protected VLANs

Context

Do as follows on all S6700s in the RRPP domain.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The RRPP domain view is displayed.

Step 3 Run:

protected-vlan reference-instance { { instance-id1 [ to instance-id2 ] } &<1-10> | all }

A list of protected VLANs in the RRPP domain is specified.

All the VLANs whose packets need to pass through an RRPP interface, including the control VLANs and data VLANs, must be configured as protected VLANs.

NOTE

When configure the list of protected VLANs, pay attention to the following points:

l Protected VLANs must be configured before you configure an RRPP ring.

l You can delete or change existing protected VLANs before configuring an RRPP ring. The protected

VLANs cannot be changed after the RRPP ring is configured.

l In the same physical topology, the control VLAN of a domain cannot be configured as a protected

VLAN of another domain.

l The control VLAN must be included in the protected VLANs; otherwise, the RRPP ring cannot be

configured.

l The control VLAN can be mapped to other instances before the RRPP ring is created. After the RRPP

ring is created, the mapping cannot be changed unless you delete the RRPP domain.

l When the mapping between an instance and VLANs changes, the protected VLANs of the RRPP

domain also change.

l All the VLANs allowed by an RRPP interface should be configured as protected VLANs.

----End

3.3.7 Creating an RRPP Ring

Context

NOTE

By default, STP is enabled on all interfaces of the S6700. RRPP and STP cannot be enabled on the same interface. Therefore, before creating an RRPP ring, you need to use the stp disable command to disable STP on the interfaces to be added to the RRPP ring.

Do as follows on all S6700s in the RRPP domain.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

57

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The RRPP domain view is displayed.

Step 3 Run:

ring ring-id node-mode { master | transit } primary-port interface-type interfacenumber secondary-port interface-type interface-number level level-value

An RRPP ring is created.

RRPP rings can be configured only on , and Eth-Trunk interfaces.

The level 0 indicates the major ring, and the level 1 indicates the subring.

A domain can contain only one major ring. Before creating a subring, you must create the major ring.

The master node on a subring cannot function as an edge node or an assistant edge node.

An S6700EI supports 16 rings.

Step 4 Run:

ring ring-id node-mode { edge | assistant-edge } common-port interface-type interface-number edge-port interface-type interface-number

The edge node and assistant edge node of a subring are configured.

The common port of the edge node and assistant edge node must be on the major ring.

The system automatically sets the level of the ring where the edge node and assistant edge node reside to 1.

----End

3.3.8 Enabling the RRPP Ring

The protocol packets of sub-rings are transmitted on the major ring as data packets; the protocol packets of the major ring are transmitted on only the major ring. An RRPP ring can take effect only when it is enabled.

Context

NOTE

The RRPP ring can be activated only when both the RRPP ring and RRPP protocol are enabled.

Do as follows on all switches in the RRPP domain:

Procedure

Step 1 Run:

system-view

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

58

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The domain view is displayed.

Step 3 Run:

ring ring-id enable

The RRPP ring is enabled.

----End

3.3.9 Enabling RRPP

To activate an RRPP ring, you must enable RRPP and the RRPP ring.

Context

NOTE

The RRPP ring can be activated only when both the RRPP ring and RRPP protocol are enabled.

Do as follows on all switches in the RRPP domain:

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp enable

The RRPP protocol is enabled.

----End

3.3.10 (Optional) Setting the Values of RRPP Domain Timers

Two timers, that is, the Hello timer and the Fail timer are used when master nodes are sending and receiving RRPP protocol packets. The Hello timer is used when primary ports are sending Hello packets. The Fail timer is used when secondary ports are receiving the Hello packets sent by the local node.

Context

Do as follows on the master node in the RRPP domain:

Procedure

Step 1 Run:

system-view

The system view is displayed.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

59

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Step 2 Run:

rrpp domain domain-id

The domain view is displayed.

Step 3 Run:

timer hello-timer hello-value fail-timer fail-value

The values of RRPP domain timers are set.

The value of the Fail timer is equal to or more than three times the value of the Hello timer.

The value of the Edge-hello timer defaults to half the value of the Hello timer of the master node on the major ring.

Set consistent Hello timers and Fail timers on all the nodes in the same RRPP ring domain; otherwise, the edge ports of the edge nodes might be unstable.

----End

3.3.11 Checking the Configuration

Procedure

Example

l Run the display stp region-configuration command to check the mapping between MSTIs

and VLANs.

l Run the display rrpp brief [ domain domain-id ] command to check brief information

about an RRPP domain.

l Run the display rrpp verbose domain domain-id [ ring ring-id ] command to check

detailed information about an RRPP domain.

l Run the display rrpp statistics domain domain-id [ ring ring-id ] command to check the

statistics of packets in an RRPP domain.

----End

Run the display stp region-configuration command, and you can view the mapping between MSTIs and VLANs. The following is an example:

<Quidway> display stp region-configuration Oper configuration Format selector :0 Region name :00e0cd568d00 Revision level :0

Instance Vlans Mapped 0 3 to 99, 301 to 4094 1 1, 100 to 200 2 2, 201 to 300

Run the display rrpp brief command, and you can view information such as the node mode, RRPP status, control VLAN, protected VLAN, and values of timers. The following is an example:

<Quidway> display rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

60

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

RRPP Protocol Status: Disable RRPP Working Mode: HW RRPP Linkup Delay Timer: 1 sec (0 sec default). Number of RRPP Domains: 1

Domain Index : 1 Control VLAN : major 30 sub 31 Protected VLAN : Reference Instance 10 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

-------------------------------------------------------------------------------

1 0 M XGigabitEthernet0/0/1 XGigabitEthernet0/0/2 No

Run the display rrpp verbose command, and you can view detailed information such as the control VLAN, protected VLAN, timers, node mode, and port status. The following is an example:

<Quidway> display rrpp verbose domain 1 ring 1 Domain Index : 1 Control VLAN : major 400 sub 401 Protected VLAN : Reference Instance 30 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) RRPP Ring : 1 Ring Level : 0 Node Mode : Master Ring State : Complete Is Enabled : Enable Is Active : Yes Primary port : XGigabitEthernet0/0/1 Port status: UP Secondary port : XGigabitEthernet0/0/2 Port status: BLOCKED

Run the display rrpp statistics command, and you can view the statistics of sent and received packets. The following is an example:

<Quidway> display rrpp statistics domain 1 ring 1 RRPP Ring : 1 Ring Level : 0 Node Mode : Master Is Active : Yes Primary port : XGigabitEthernet0/0/1 Packet LINK COMMON COMPLETE EDGE MAJOR Packet

Direct HEALTH DOWN FDB FDB HELLO FAULT Total

-------------------------------------------------------------------------------

Send 2934 0 1 1 0 0 2936 Rcv 0 1 0 0 0 0 1 Secondary port: XGigabitEthernet0/0/2 Packet LINK COMMON COMPLETE EDGE MAJOR Packet

Direct HEALTH DOWN FDB FDB HELLO FAULT Total

-------------------------------------------------------------------------------

Send 0 0 1 0 0 0 1 Rcv 2928 1 0 0 0 0 2929

3.4 Configuring RRPP Multi-Instance

RRPP multi-instance is based on domains. Multiple RRPP domains can be configured on a physical ring. In a domain, all ports, nodes, and topologies must comply with basic RRPP principles. Therefore, a physical ring has multiple master nodes. Each master node independently detects the completeness of the physical ring and blocks or unblocks its own secondary ports accordingly.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

61

CEA

UPEA

PE-AGG

CEC

UPEB

UPEC

UPED

IPTV

VLAN101-200

IPTV

VLAN101-200

domain 1 ring 1

IPTV VLAN101-200

domain 2 ring 1

HSI VLAN601-800

domain 1 domain 2

Backbone

network

HSI

VLAN600-800

HSI

VLAN600-800

domain 2 ring 2:

HSI VLAN601-800

domain 2 ring 3: HSI VLAN601-800

domain 1 ring 3:

IPTV VLAN101-200

domain 1 ring2:

IPTV VLAN101-200

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3.4.1 Establishing the Configuration Task

RRPP does not support auto-selection mechanism. Therefore, you need to correctly configure each node on the ring to achieve detection and protection of the ring.

Applicable Environment

RRPP multi-instance can be applied to a more complicated networking. As shown in Figure

3-4, two RRPP sub-rings are formed after CEs are dual-homed to UPEs, and an RRPP ring is

constructed by four UPEs and one PE-AGG. The PE-AGG delivers the user data to the backbone network.

Figure 3-4 Networking diagram of RRPP multi-instance

CE: indicates Customer Edge

UPE: indicates Underlayer Provider Edge

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

PE-AGG: indicates PE-Aggregation IPTV: indicates Internet Protocol Television

62

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

HSI: indicates High Speed Internet

In the preceding figure, the IPTV service and HSI service are respectively carried in two domains that share the same RRPP ring. By applying RRPP multi-instance, you can realize balanced traffic loads for both services, that is, the IPTV service is carried in domain 1, and the HSI service is carried in domain 2.

NOTE

Only either RRPP or STP can be configured on one port.

RRPP has no auto-selection mechanism. Ring detection and protection can be enabled in the corresponding protocol only when each node in the ring is correctly configured. Therefore, make sure that all the configurations are correct.

Pre-configuration Tasks

Before configuring RRPP multi-instance, complete the following tasks:

l Establishing the ring networking

l Configuring link attributes for interfaces

Data Preparation

To configure RRPP multi-instance, you need the following data.

No.

1 IDs of RRPP domains

2 IDs of control VLANs in RRPP domains

3 IDs of protected VLANs in RRPP domains

4 IDs of RRPP rings in RRPP domains

5 Names of the ports in RRPP rings

6 (Optional) IDs of the ring groups

7 (Optional) Delay for link restoration

8 (Optional) Values of the Hello timer and Fail timer in RRPP domains

Data

3.4.2 Creating Instances

Context

Do as follows on the S6700 that you want to add to an RRPP domain with multiple instances.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

63

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

stp region-configuration

The MST region view is displayed.

Step 3 Run the following commands as required.

l Run:

instance instance-id vlan { vlan-id1 [ to vlan-id2 ] }&<1-10>

The mapping between an instance and VLANs is configured.

l Run:

vlan-mapping modulo modulo

The default algorithm is used to determine the mapping between instances and VLANs.

The vlan-mapping modulo command is used to map a VLAN to the instance with the ID being (VLAN ID - 1)%modulo + 1. Assume that modulo is set to 16. The S6700 maps VLAN 1 to instance 1, VLAN 2 to instance 2, VLAN 16 to instance 16, and so forth.

The control VLANs of the major ring and the subrings must be contained in the VLAN list.

A domain supports up to 49 instances, among which instance 0 is the default instance and does not need to be created.

By default, all VLANs are mapped to instance 0.

Step 4 Run:

active region-configuration

The configuration of the MST region is activated.

----End

3.4.3 Configuring Interfaces on the RRPP Ring

Context

Do as follows on the S6700 on which interfaces need to be added to the RRPP ring.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

interface interface-type interface-number

The interface view is displayed.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

64

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

RRPP rings can be configured only on, and Eth-Trunk interfaces.

An interface cannot be configured as an RRPP interface if the Smart Link, LDT, MUX VLAN or MSTP is configured on the interface.

Step 3 (Optional) Run:

port link-type trunk

The interface is configured as a trunk interface.

By default, an interface is a hybrid interface.

An RRPP interface needs to allow packets of control VLANs and data VLANs to pass through; therefore, the RRPP interface must be configured as a trunk interface or hybrid interface.

Step 4 Run:

port trunk allow-pass vlan { { vlan-id1 [ to vlan-id2 ] } &<1-10> | all }

or run:

port hybrid tagged vlan { { vlan-id1 [ to vlan-id2 ] }&<1-10> | all }

IDs of the data VLANs whose packets are allowed to pass through the RRPP interface are specified.

After you specify the control VLAN by running the control-vlan command in the RRPP domain view and run the ring node-mode command, all the interfaces on the RRPP ring allow packets of this control VLAN to pass through. Therefore, you need only to specify the data VLANs in this step.

Step 5 Run:

stp disable

STP is disabled on the RRPP interface.

By default, STP is enabled on all interfaces of the S6700. Before creating an RRPP ring, disable STP on the interfaces that need to be added to the RRPP ring.

----End

3.4.4 Creating an RRPP Domain

A group of connected switches that have the same domain ID and the same control VLANs constitute an RRPP domain. An RRPP domain mainly consists of RRPP rings, control VLANs, and master nodes.

Context

Do as follows on all switches in the RRPP domain:

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The RRPP domain is created.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

65

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

When creating the RRPP domain, you must specify the domain ID. If the domain exists, the domain view is directly displayed.

You can create up to eight domains on S6700.

----End

3.4.5 Specifying Protected VLANs

Context

Do as follows on all S6700s in the RRPP domain.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The RRPP domain view is displayed.

Step 3 Run:

protected-vlan reference-instance { { instance-id1 [ to instance-id2 ] } &<1-10> | all }

A list of protected VLANs in the RRPP domain is specified.

All the VLANs whose packets need to pass through an RRPP interface, including the control VLANs and data VLANs, must be configured as protected VLANs.

NOTE

When configure the list of protected VLANs, pay attention to the following points:

l Protected VLANs must be configured before you configure an RRPP ring.

l You can delete or change existing protected VLANs before configuring an RRPP ring. The protected

VLANs cannot be changed after the RRPP ring is configured.

l In the same physical topology, the control VLAN of a domain cannot be configured as a protected

VLAN of another domain.

l The control VLAN must be included in the protected VLANs; otherwise, the RRPP ring cannot be

configured.

l The control VLAN can be mapped to other instances before the RRPP ring is created. After the RRPP

ring is created, the mapping cannot be changed unless you delete the RRPP domain.

l When the mapping between an instance and VLANs changes, the protected VLANs of the RRPP

domain also change.

l All the VLANs allowed by an RRPP interface should be configured as protected VLANs.

----End

3.4.6 Creating a Control VLAN

Each RRPP ring has two control VLANs. The major control VLAN transmits mainly the protocol packets of the major ring; the sub-control VLAN transmits mainly the protocol packets of the sub-rings.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

66

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Context

Do as follows on all switches in the RRPP domain:

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The domain view is displayed.

Step 3 Run:

control-vlan vlan-id

The control VLAN is created.

The control VLAN specified by vlan-id and the sub-control VLAN specified by vlan-id+1 must be uncreated and not used in port trunk, mapping, or stacking mode.

An RRPP domain is configured with two control VLANs: the primary control VLAN and the sub control VLAN. You need to specify only the primary control VLAN. The VLAN whose ID is one more than the ID of the primary control VLAN becomes the sub control VLAN.

After configuring the control VLAN, you cannot directly modify it. You can only delete the control VLAN by deleting the domain, and then reconfigure the control VLAN. The sub-control VLAN is also deleted when you delete the domain.

NOTE

DHCP cannot be configured for a control VLAN.

----End

3.4.7 Creating an RRPP Ring

Context

NOTE

By default, STP is enabled on all interfaces of the S6700. RRPP and STP cannot be enabled on the same interface. Therefore, before creating an RRPP ring, you need to use the stp disable command to disable STP on the interfaces to be added to the RRPP ring.

Do as follows on all S6700s in the RRPP domain.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

67

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

The RRPP domain view is displayed.

Step 3 Run:

ring ring-id node-mode { master | transit } primary-port interface-type interfacenumber secondary-port interface-type interface-number level level-value

An RRPP ring is created.

RRPP rings can be configured only on , and Eth-Trunk interfaces.

The level 0 indicates the major ring, and the level 1 indicates the subring.

A domain can contain only one major ring. Before creating a subring, you must create the major ring.

The master node on a subring cannot function as an edge node or an assistant edge node.

An S6700EI supports 16 rings.

Step 4 Run:

ring ring-id node-mode { edge | assistant-edge } common-port interface-type interface-number edge-port interface-type interface-number

The edge node and assistant edge node of a subring are configured.

The common port of the edge node and assistant edge node must be on the major ring.

The system automatically sets the level of the ring where the edge node and assistant edge node reside to 1.

----End

3.4.8 Enabling the RRPP Ring

The protocol packets of sub-rings are transmitted on the major ring as data packets; the protocol packets of the major ring are transmitted on only the major ring. An RRPP ring can take effect only when it is enabled.

Context

NOTE

The RRPP ring can be activated only when both the RRPP ring and RRPP protocol are enabled.

Do as follows on all switches in the RRPP domain:

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The domain view is displayed.

Step 3 Run:

ring ring-id enable

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

68

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

The RRPP ring is enabled.

----End

3.4.9 Enabling the RRPP Protocol

To activate an RRPP ring, you must enable RRPP and the RRPP ring.

Context

NOTE

The RRPP ring can be activated only when both the RRPP ring and RRPP protocol are enabled.

Do as follows on all switches in the RRPP domain:

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp enable

The RRPP protocol is enabled.

----End

3.4.10 (Optional) Creating a RRPP Ring Group

To reduce the Edge-Hello packets to be sent and received, you can add a group of sub-rings with the same edge nodes or assistant edge nodes to an RRPP ring group.

Context

Do as follows on the edge node or assistant edge node:

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp ring-group ring-group-id

An RRPP ring group is created.

The ring group can be only created on edge nodes or assistant edge nodes.

In an RRPP ring group, the nodes of all sub-rings must have the same type. That is, all of them must be all edge nodes or assistant edge nodes.

Step 3 Run:

domain domain-id ring { ring-id1 [ to ring-id2 ] } &<1-10>

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

69

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

A sub-ring is added to the ring group.

The edge nodes of sub-rings in a ring group are the same device. Similarly, the assistant edge nodes of sub-rings in a ring group are the same device.

A sub-ring can belong to only one ring group.

When creating a sub-ring or deleting a sub-ring, pay attention to the following:

l To add activated sub-rings in the ring group, configure relevant commands firstly on the

assistant edge node and then on the edge node.

l To delete activated sub-rings from the ring group, configure relevant commands firstly on

the edge node and then on the assistant edge node.

----End

3.4.11 (Optional) Configuring the Delay for Link Restoration

After the delay for link recovery is configured, the block port on the RRPP ring is not switched immediately. Instead, the block port is switched when the delay timer expires, thus reducing the flapping of the link status.

Context

The delay can take effect only when it is configured on a master node.

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp linkup-delay-timer linkup-delay-timer-value

The delay timer for the switchover of block port is set.

The value of linkup-delay-timer-value must be smaller than or equal to the value of the Fail timer minus 2 times HELLO timer in any domain.

----End

3.4.12 (Optional) Setting the Hello Timer and Fail Timer of an RRPP Domain

Two timers, that is, the Hello timer and the Fail timer are used when master nodes are sending and receiving RRPP protocol packets. The Hello timer is used when primary ports are sending Hello packets. The Fail timer is used when secondary ports are receiving the Hello packets sent by the local node.

Context

Do as follows on the master node in the RRPP domain:

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

70

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Procedure

Step 1 Run:

system-view

The system view is displayed.

Step 2 Run:

rrpp domain domain-id

The domain view is displayed.

Step 3 Run:

timer hello-timer hello-value fail-timer fail-value

The values of RRPP domain timers are set.

The value of the Fail timer is equal to or more than three times the value of the Hello timer.

The value of the Edge-hello timer defaults to half the value of the Hello timer of the master node on the major ring.

Set consistent Hello timers and Fail timers on all the nodes in the same RRPP ring domain; otherwise, the edge ports of the edge nodes might be unstable.

----End

3.4.13 Checking the Configuration

Procedure

l Run the display stp region-configuration command to check the mapping between MSTIs

and VLANs.

l Run the display rrpp brief [ domain domain-id ] command to check brief information

about an RRPP domain.

l Run the display rrpp verbose domain domain-id [ ring ring-id ] command to check

detailed information about an RRPP domain.

l Run the display rrpp statistics domain domain-id [ ring ring-id ] command to check the

statistics of packets in an RRPP domain.

----End

Example

Run the display stp region-configuration command, and you can view the mapping between MSTIs and VLANs. The following is an example:

<Quidway> display stp region-configuration Oper configuration Format selector :0 Region name :00e0cd568d00 Revision level :0

Instance Vlans Mapped 0 3 to 99, 301 to 4094 1 1, 100 to 200 2 2, 201 to 300

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

71

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Run the display rrpp brief command, and you can view information such as the node mode, RRPP status, control VLAN, protected VLAN, and values of timers. The following is an example:

<Quidway> display rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge

RRPP Protocol Status: Disable RRPP Working Mode: HW RRPP Linkup Delay Timer: 1 sec (0 sec default). Number of RRPP Domains: 1

Domain Index : 1 Control VLAN : major 30 sub 31 Protected VLAN : Reference Instance 10 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

-------------------------------------------------------------------------------

1 0 M XGigabitEthernet0/0/1 XGigabitEthernet0/0/2 No

Run the display rrpp verbose command, and you can view detailed information such as the control VLAN, protected VLAN, timers, node mode, and port status. The following is an example:

<Quidway> display rrpp verbose domain 1 ring 1 Domain Index : 1 Control VLAN : major 400 sub 401 Protected VLAN : Reference Instance 30 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) RRPP Ring : 1 Ring Level : 0 Node Mode : Master Ring State : Complete Is Enabled : Enable Is Active : Yes Primary port : XGigabitEthernet0/0/1 Port status: UP Secondary port : XGigabitEthernet0/0/2 Port status: BLOCKED

Run the display rrpp statistics command, and you can view the statistics of sent and received packets. The following is an example:

<Quidway> display rrpp statistics domain 1 ring 1 RRPP Ring : 1 Ring Level : 0 Node Mode : Master Is Active : Yes Primary port : XGigabitEthernet0/0/1 Packet LINK COMMON COMPLETE EDGE MAJOR Packet

Direct HEALTH DOWN FDB FDB HELLO FAULT Total

-------------------------------------------------------------------------------

Send 2934 0 1 1 0 0 2936 Rcv 0 1 0 0 0 0 1 Secondary port: XGigabitEthernet0/0/2 Packet LINK COMMON COMPLETE EDGE MAJOR Packet

Direct HEALTH DOWN FDB FDB HELLO FAULT Total

-------------------------------------------------------------------------------

Send 0 0 1 0 0 0 1 Rcv 2928 1 0 0 0 0 2929

3.5 Maintaining RRPP

Commands of clearing statistics helps to locate the RRPP faults on a device.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

72

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3.5.1 Clearing RRPP Running Information

You can run the reset command to reset the RRPP statistics before recollecting RRPP statistics.

Context

CAUTION

RRPP statistics cannot be restored once cleared. Therefore, confirm the action before you use the command.

To clear the RRPP statistics, run the following reset command in the user view:

Procedure

Step 1 Run the reset rrpp statistics domain domain-id [ ring ring-id ] command to clear the statistics

of RRPP.

----End

3.5.2 Debugging RRPP

Debugging information facilitates fault location. RRPP debugging includes event debugging and packet debugging.

Context

CAUTION

Debugging affects the performance of the system. Therefore, after debugging, run the undo debugging all command to disable it immediately.

When there is an RRPP running fault, run the following debugging command in the user view to view the debugging information. The debugging information helps to locate and analyze the fault.

Procedure

Step 1 Run the debugging rrpp [ domain domain-id [ ring ring-id ] ] { error | event | packet | all }

command in the user view to debug RRPP.

----End

3.6 Configuration Examples

This section provides several configuration examples of RRPP.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

73

XGE0/0/1

XGE0/0/2

XGE0/0/1

XGE0/0/2

XGE0/0/1

SwitchB

Ring 1

SwitchA

SwitchC

Primary Port Secondary port

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3.6.1 Example for Configuring a Single RRPP Ring

Networking Requirements

As shown in Figure 3-5, Switch A, Switch B, and Switch C support the RRPP function. Switch A, Switch B, and Switch C are on ring 1 of RRPP domain 1. The data of VLANs 100 to 300 needs to be protected.

Figure 3-5 Networking diagram of a single RRPP ring

Configuration Roadmap

The configuration roadmap is as follows:

1. Map instance 1 to VLANs 100 to 300.

2. Locate Switch A, Switch B, and Switch C on ring 1 of RRPP domain 1.

3. Configure Switch A as the master node on ring 1, and configure Switch B and Switch C as transit nodes on ring 1.

Data Preparation

To complete the configuration, you need the following data:

l Numbers of the RRPP interfaces

l Control VLAN ID of ring 1

Procedure

Step 1 Map instance 1 to VLANs 100 to 300.

<Quidway> system-view [Quidway] sysname SwitchA [SwitchA] stp region-configuration [SwitchA-mst-region] instance 1 vlan 20 21 100 to 300 [SwitchA-mst-region] active region-configuration [SwitchA-mst-region] quit

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

74

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

The configurations of Switch B and Switch C are similar to the configuration of Switch A. The detailed configurations are omitted here.

Step 2 Create an RRPP domain and the control VLAN.

# On the master node of ring 1, namely Switch A, create RRPP domain 1 and configure VLAN 20 as the main control VLAN.

[SwitchA] rrpp domain 1 [SwitchA-rrpp-domain-region1] control-vlan 20 [SwitchA-rrpp-domain-region1] quit

# On the transit node of ring 1, namely Switch B, create RRPP domain 1 and configure VLAN 20 as the main control VLAN.

<Quidway> system-view [Quidway] sysname SwitchB [SwitchB] rrpp domain 1 [SwitchB-rrpp-domain-region1] control-vlan 20 [SwitchB-rrpp-domain-region1] quit

# On the master node of ring 1, namely SwitchC, create RRPP domain 1 and configure VLAN 20 as the main control VLAN.

<Quidway> system-view [Quidway] sysname SwitchC [SwitchC] rrpp domain 1 [SwitchC-rrpp-domain-region1] control-vlan 20 [SwitchC-rrpp-domain-region1] quit

Step 3 Configure the interfaces to be added to the RRPP ring as trunk interfaces, allow VLANs 100 to

300 on the interfaces, and disable STP on the interfaces.

# Configure Switch A.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] port link-type trunk [SwitchA-XGigabitEthernet0/0/1] port trunk allow-pass vlan 100 to 300 [SwitchA-XGigabitEthernet0/0/1] stp disable [SwitchA-XGigabitEthernet0/0/1] quit [SwitchA] interface xgigabitethernet 0/0/2 [SwitchA-XGigabitEthernet0/0/2] port link-type trunk [SwitchA-XGigabitEthernet0/0/2] port trunk allow-pass vlan 100 to 300 [SwitchA-XGigabitEthernet0/0/2] stp disable [SwitchA-XGigabitEthernet0/0/2] quit

# Configure Switch B.

[SwitchB] interface gigabitethernet 0/0/1 [SwitchB-XGigabitEthernet0/0/1] port link-type trunk [SwitchB-XGigabitEthernet0/0/1] port trunk allow-pass vlan 100 to 300 [SwitchB-XGigabitEthernet0/0/1] stp disable [SwitchB-XGigabitEthernet0/0/1] quit [SwitchB] interface xgigabitethernet 0/0/2 [SwitchB-XGigabitEthernet0/0/2] port link-type trunk [SwitchB-XGigabitEthernet0/0/2] port trunk allow-pass vlan 100 to 300 [SwitchB-XGigabitEthernet0/0/2] stp disable [SwitchB-XGigabitEthernet0/0/2] quit

# Configure Switch C.

[SwitchC] interface gigabitethernet 0/0/1 [SwitchC-XGigabitEthernet0/0/1] port link-type trunk [SwitchC-XGigabitEthernet0/0/1] port trunk allow-pass vlan 100 to 300 [SwitchC-XGigabitEthernet0/0/1] stp disable [SwitchC-XGigabitEthernet0/0/1] quit [SwitchC] interface xgigabitethernet 0/0/2 [SwitchC-XGigabitEthernet0/0/2] port link-type trunk

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

75

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

[SwitchC-XGigabitEthernet0/0/2] port trunk allow-pass vlan 100 to 300 [SwitchC-XGigabitEthernet0/0/2] stp disable [SwitchC-XGigabitEthernet0/0/2] quit

Step 4 Configure a protection VLAN and create the RRPP ring.

# Configure the protection VLAN on Switch A and configure Switch A as the master node of RRPP ring 1 and specify the primary interface and secondary interface.

[SwitchA] rrpp domain 1 [SwitchA-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchA-rrpp-domain-region1] ring 1 node-mode master primary-port

xgigabitethernet 0/0/1 secondary-port xgigabitethernet 0/0/2 level 0

[SwitchA-rrpp-domain-region1] ring 1 enable [SwitchA-rrpp-domain-region1] quit

# Configure the protection VLAN on Switch B and configure Switch B as the transit node of RRPP ring 1 and specify the primary interface and secondary interface.

[SwitchB] rrpp domain 1 [SwitchB-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchB-rrpp-domain-region1] ring 1 node-mode transit primary-port

xgigabitethernet 0/0/1 secondary-port xgigabitethernet 0/0/2 level 0

[SwitchB-rrpp-domain-region1] ring 1 enable [SwitchB-rrpp-domain-region1] quit

# Configure the protection VLAN on Switch C and configure Switch C as the transit node of RRPP ring 1 and specify the primary interface and secondary interface.

[SwitchC] rrpp domain 1 [SwitchC-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchC-rrpp-domain-region1] ring 1 node-mode transit primary-port

xgigabitethernet 0/0/1 secondary-port xgigabitethernet 0/0/2 level 0

[SwitchC-rrpp-domain-region1] ring 1 enable [SwitchC-rrpp-domain-region1] quit

Step 5 Enable RRPP.

After configuring an RRPP ring, enable RRPP on each node on the ring so that the RRPP ring can be activated.

# Enable RRPP on Switch A.

[SwitchA] rrpp enable

# Enable RRPP on SwitchB.

[SwitchB] rrpp enable

# Enable RRPP on SwitchC.

[SwitchC] rrpp enable

Step 6 Verify the configuration.

After the configurations are complete and network become stable, run the following commands to verify the configuration. Take Switch A for example.

l Run the display rrpp brief command on SwitchA. The following information is displayed:

[SwitchA] display rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge

RRPP Protocol Status: Enable RRPP Working Mode: HW RRPP Linkup Delay Timer: 0 sec (0 sec default). Number of RRPP Domains: 1

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

76

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Domain Index : 1 Control VLAN : major 20 sub 21 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

-------------------------------------------------------------------------- 1 0 M XGigabitEthernet0/0/1 XGigabitEthernet0/0/2 Yes

You can find that RRPP is enabled on SwitchA. The main control VLAN of domain 1 is VLAN 20 and the sub control VLAN is VLAN 21. SwitchA is the master node of ring 1. XGE 0/0/1 is the primary interface, and XGE 0/0/2 is the secondary interface.

l Run the display rrpp verbose domain command on SwitchA. Detailed information about

RRPP domain 1 is displayed as follows:

[SwitchA] display rrpp verbose domain 1 Domain Index : 1 Control VLAN : major 20 sub 21 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec)

RRPP Ring : 1 Ring Level : 0 Node Mode : Master Ring State : Complete Is Enabled : Enable Is Active : Yes Primary port : XGigabitEthernet0/0/1 Port status: UP Secondary port: XGigabitEthernet0/0/2 Port status: BLOCKED

----End

Configuration Files

l Configuration file of Switch A

sysname SwitchA # vlan batch 20 to 21 100 to 300 # rrpp enable # stp regionconfiguration instance 1 vlan 20 to 21 100 to 300 active regionconfiguration # rrpp domain 1 control-vlan 20 protected-vlan reference-instance 1 ring 1 node-mode master primary-port XGigabitEthernet 0/0/1 secondary-port XGigabitEthernet 0/0/2 level 0 ring 1 enable # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 20 to 21 100 to 300 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 20 to 21 100 to 300 stp disable #

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

77

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

l Configuration file of Switch B

# sysname SwitchB # vlan batch 20 to 21 100 to 300 # rrpp enable # stp regionconfiguration instance 1 vlan 20 to 21 100 to 300 active regionconfiguration # rrpp domain 1 control-vlan 20 protected-vlan reference-instance 1 ring 1 node-mode transit primary-port XGigabitEthernet 0/0/1 secondary-port XGigabitEthernet 0/0/2 level 0 ring 1 enable # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 20 to 21 100 to 300 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 20 to 21 100 to 300 stp disable # return #

l Configuration file of the SwitchC

# sysname SwitchC # vlan batch 20 to 21 100 to 300 # rrpp enable # stp regionconfiguration instance 1 vlan 20 to 21 100 to 300 active regionconfiguration # rrpp domain 1 control-vlan 20 protected-vlan reference-instance 1 ring 1 node-mode transit primary-port XGigabitEthernet 0/0/1 secondary-port XGigabitEthernet 0/0/2 level 0 ring 1 enable # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 20 to 21 100 to 300 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 20 to 21 100 to 300 stp disable # return

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

78

SwitchA

XGE0/0/1

XGE0/0/2

XGE0/0/1

XGE0/0/2

XGE0/0/3

XGE0/0/1

SwitchB

sub-ring

SwitchC

XGE0/0/3

XGE0/0/2

XGE0/0/1

XGE0/0/2

major ring

SwitchD

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

3.6.2 Example for Configuring Crossed RRPP Rings with a Single Instance

Networking Requirements

As shown in Figure 3-6, Switch A, Switch B, Switch C, and Switch D support the RRPP function. Switch A, Switch B, and Switch D are on ring 1 of domain 1, which is the major ring. Switch A, Switch C, and Switch D are on ring 2 of domain 1, which is the subring. Switch A is the edge node on ring 2 of domain 1, and Switch D is the assistant edge node on ring 2 of domain

1.

The main control VLAN ID is 10. The RRPP rings transmit data of VLAN 2 to VLAN 9.

Figure 3-6 Networking diagram of crossed RRPP rings with a single instance (Huawei version)

Configuration Roadmap

The configuration roadmap is as follows:

1. Configure ring 1 (major ring) of domain 1 on Switch A, Switch B, and Switch C. Configure VLAN 10 as the main control VLAN. Add the interfaces on the major ring and subring to VLAN 2 to VLAN 9 so that the interfaces allow service packets of these VLANs to pass through.

2. Configure ring 2 (subring) of domain 1on Switch A, Switch B, and Switch D.

3. Configure Switch B as the master node of the major ring and configure Switch A and Switch D as transit nodes of the major ring.

4. Configure Switch C as the master node of the subring; configure Switch A as the edge node of the subring; configure Switch D as the assistant edge node of the subring.

Data Preparation

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

To complete the configuration, you need the following data.

l Numbers of the interfaces to be added to the RRPP rings

l Control VLAN IDs and data VLAN IDs

79

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Procedure

Step 1 Configure Switch B as the master node of the major ring.

# Create data VLANs 2 to 9 on Switch B.

<Quidway> system-view [Quidway] sysname SwitchB [SwitchB] vlan batch 2 to 9

Configure instance 1, and map it to the VLANs allowed by the RRPP interfaces and protected VLANs.

[SwitchB] stp region-configuration [SwitchB-mst-region] instance 1 vlan 2 to 11 [SwitchB-mst-region] active region-configuration [SwitchB-mst-region] quit

# On SwitchB, configure domain 1. Then configure VLAN 10 as the main control VLAN and instance 1 as the protected instance of domain 1.

[SwitchB] rrpp enable [SwitchB] rrpp domain 1 [SwitchB-rrpp-domain-region1] control-vlan 10 [SwitchB-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchB-rrpp-domain-region1] quit

# Disable STP on the interfaces to be added to the RRPP rings, configure the interfaces as trunk interfaces, and configure the interfaces to allow service packets of VLAN 2 to VLAN 9 to pass through.

[SwitchB] interface xgigabitethernet 0/0/1 [SwitchB-XGigabitEthernet0/0/1] port link-type trunk [SwitchB-XGigabitEthernet0/0/1] port trunk allow-pass vlan 2 to 9 [SwitchB-XGigabitEthernet0/0/1] stp disable [SwitchB-XGigabitEthernet0/0/1] quit [SwitchB] interface xgigabitethernet 0/0/2 [SwitchB-XGigabitEthernet0/0/2] port link-type trunk [SwitchB-XGigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 9 [SwitchB-XGigabitEthernet0/0/2] stp disable [SwitchB-XGigabitEthernet0/0/2] quit

# Configure the primary interface and secondary interface of the master node on the RRPP major ring.

[SwitchB] rrpp domain 1 [SwitchB-rrpp-domain-region1] ring 1 node-mode master primary-port

xgigabitethernet 0/0/1 secondary-port xgigabitethernet 0/0/2 level 0

[SwitchB-rrpp-domain-region1] ring 1 enable [SwitchB-rrpp-domain-region1] quit

Step 2 Configure Switch C as the master node of the subring.

# Create data VLANs 2 to 9 on Switch C.

<Quidway> system-view [Quidway] sysname SwitchC [SwitchC] vlan batch 2 to 9

Configure instance 1, and map it to the VLANs allowed by the RRPP interfaces and protected VLANs.

[SwitchC] stp region-configuration [SwitchC-mst-region] instance 1 vlan 2 to 11 [SwitchC-mst-region] active region-configuration [SwitchC-mst-region] quit

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

80

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

# On Switch C, configure domain 1. Then configure VLAN 10 as the main control VLAN and instance 1 as the protected instance of domain 1.

[SwitchC] rrpp enable [SwitchC] rrpp domain 1 [SwitchC-rrpp-domain-region1] control-vlan 10 [SwitchC-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchC-rrpp-domain-region1] quit

# Disable STP on the interfaces to be added to the RRPP rings, configure the interfaces as trunk interfaces, and configure the interfaces to allow service packets of VLAN 2 to VLAN 9 to pass through.

[SwitchC] interface xgigabitethernet 0/0/1 [SwitchC-XGigabitEthernet0/0/1] port link-type trunk [SwitchC-XGigabitEthernet0/0/1] port trunk allow-pass vlan 2 to 9 [SwitchC-XGigabitEthernet0/0/1] stp disable [SwitchC-XGigabitEthernet0/0/1] quit [SwitchC] interface xgigabitethernet 0/0/2 [SwitchC-XGigabitEthernet0/0/2] port link-type trunk [SwitchC-XGigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 9 [SwitchC-XGigabitEthernet0/0/2] stp disable [SwitchC-XGigabitEthernet0/0/2] quit

# Configure the primary interface and secondary interface of the master node on the RRPP subring.

[SwitchC] rrpp domain 1 [SwitchC-rrpp-domain-region1] ring 2 node-mode master primary-port

xgigabitethernet 0/0/1 secondary-port xgigabitethernet 0/0/2 level 1

[SwitchC-rrpp-domain-region1] ring 2 enable [SwitchC-rrpp-domain-region1] quit

Step 3 Configure Switch A as the transit node of the major ring and the edge transit node of the subring.

# Create data VLANs 2 to 9 on Switch A.

<Quidway> system-view [Quidway] sysname SwitchA [SwitchA] vlan batch 2 to 9

Configure instance 1, and map it to the VLANs allowed by the RRPP interfaces and protected VLANs.

[SwitchA] stp region-configuration [SwitchA-mst-region] instance 1 vlan 2 to 11 [SwitchA-mst-region] active region-configuration [SwitchA-mst-region] quit

# On SwitchA, configure domain 1. Then configure VLAN 10 as the main control VLAN and instance 1 as the protected instance of domain 1.

[SwitchA] rrpp enable [SwitchA] rrpp domain 1 [SwitchA-rrpp-domain-region1] control-vlan 10 [SwitchA-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchA-rrpp-domain-region1] quit

# Disable STP on the interfaces to be added to the RRPP rings, configure the interfaces as trunk interfaces, and configure the interfaces to allow service packets of VLAN 2 to VLAN 9 to pass through.

[SwitchA] interface xgigabitethernet 0/0/1 [SwitchA-XGigabitEthernet0/0/1] port link-type trunk [SwitchA-XGigabitEthernet0/0/1] port trunk allow-pass vlan 2 to 9 [SwitchA-XGigabitEthernet0/0/1] stp disable [SwitchA-XGigabitEthernet0/0/1] quit

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

81

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

[SwitchA] interface xgigabitethernet 0/0/2 [SwitchA-XGigabitEthernet0/0/2] port link-type trunk [SwitchA-XGigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 9 [SwitchA-XGigabitEthernet0/0/2] stp disable [SwitchA-XGigabitEthernet0/0/2] quit [SwitchA] interface xgigabitethernet 0/0/3 [SwitchA-XGigabitEthernet0/0/3] port link-type trunk [SwitchA-XGigabitEthernet0/0/3] port trunk allow-pass vlan 2 to 9 [SwitchA-XGigabitEthernet0/0/3] stp disable [SwitchA-XGigabitEthernet0/0/3] quit

# Configure the primary interface and secondary interface of the transit node on the RRPP major ring.

[SwitchA] rrpp domain 1 [SwitchA-rrpp-domain-region1] ring 1 node-mode transit primary-port

xgigabitethernet 0/0/2 secondary-port xgigabitethernet 0/0/1 level 0

[SwitchA-rrpp-domain-region1] ring 1 enable [SwitchA-rrpp-domain-region1] quit

# Configure the common interface and edge interface of the edge transit node on the subring.

[SwitchA] rrpp domain 1 [SwitchA-rrpp-domain-region1] ring 2 node-mode edge common-port xgigabitethernet

0/0/2 edge-port xgigabitethernet 0/0/3

[SwitchA-rrpp-domain-region1] ring 2 enable [SwitchA-rrpp-domain-region1] quit

Step 4 Configure Switch D as the transit node of the major ring and the assistant edge node of the

subring.

# Create data VLANs 2 to 9 on Switch D.

<Quidway> system-view [Quidway] sysname SwitchD [SwitchD] vlan batch 2 to 9

Configure instance 1, and map it to the VLANs allowed by the RRPP interfaces and protected VLANs.

[SwitchD] stp region-configuration [SwitchD-mst-region] instance 1 vlan 2 to 11 [SwitchD-mst-region] active region-configuration [SwitchD-mst-region] quit

# On Switch D, configure domain 1. Then configure VLAN 10 as the main control VLAN and instance 1 as the protected instance of domain 1.

[SwitchD] rrpp enable [SwitchD] rrpp domain 1 [SwitchD-rrpp-domain-region1] control-vlan 10 [SwitchD-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchD-rrpp-domain-region1] quit

# Disable STP on the interfaces to be added to the RRPP rings, configure the interfaces as trunk interfaces, and configure the interfaces to allow service packets of VLAN 2 to VLAN 9 to pass through.

[SwitchD] interface xgigabitethernet 0/0/1 [SwitchD-XGigabitEthernet0/0/1] port link-type trunk [SwitchD-XGigabitEthernet0/0/1] port trunk allow-pass vlan 2 to 9 [SwitchD-XGigabitEthernet0/0/1] stp disable [SwitchD-XGigabitEthernet0/0/1] quit [SwitchD] interface xgigabitethernet 0/0/2 [SwitchD-XGigabitEthernet0/0/2] port link-type trunk [SwitchD-XGigabitEthernet0/0/2] port trunk allow-pass vlan 2 to 9 [SwitchD-XGigabitEthernet0/0/2] stp disable [SwitchD-XGigabitEthernet0/0/2] quit

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

82

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

[SwitchD] interface xgigabitethernet 0/0/3 [SwitchD-XGigabitEthernet0/0/3] port link-type trunk [SwitchD-XGigabitEthernet0/0/3] port trunk allow-pass vlan 2 to 9 [SwitchD-XGigabitEthernet0/0/3] stp disable [SwitchD-XGigabitEthernet0/0/3] quit

# Configure the primary interface and secondary interface of the transit node on the RRPP major ring.

[SwitchD] rrpp domain 1 [SwitchD-rrpp-domain-region1] ring 1 node-mode transit primary-port

xgigabitethernet 0/0/2 secondary-port xgigabitethernet 0/0/1 level 0

[SwitchD-rrpp-domain-region1] ring 1 enable [SwitchD-rrpp-domain-region1] quit

# Configure the common interface and edge interface of the assistant edge node on the RRPP subring.

[SwitchD] rrpp domain 1 [SwitchD-rrpp-domain-region1] ring 2 node-mode assistant-edge common-port

xgigabitethernet 0/0/2 edge-port xgigabitethernet 0/0/3

[SwitchD-rrpp-domain-region1] ring 2 enable [SwitchD-rrpp-domain-region1] quit

Step 5 Verify the configuration.

After the configurations are complete and network become stable, run the following commands to verify the configuration:

l Run the display rrpp brief command on Switch B. The following information is displayed:

[SwitchB] display rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge

RRPP Protocol Status: Enable RRPP Working Mode: HW RRPP Linkup Delay Timer: 0 sec (0 sec default). Number of RRPP Domains: 1

Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

----------------------------------------------------------------------------- 1 0 M XGigabitEthernet0/0/1 XGigabitEthernet0/0/2 Yes

You can find that RRPP is enabled on Switch B. The main control VLAN is VLAN 10, and the sub control VLAN is VLAN 11. Switch B is the master node of the major ring, with XGE 0/0/1 as the primary interface and XGE 0/0/2 as the secondary interface.

l Run the display rrpp verbose domain command on Switch B. The following information

is displayed:

[SwitchB] display rrpp verbose domain 1 Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) RRPP Ring : 1 Ring Level : 0 Node Mode : Master Ring State : Completed Is Enabled : Enable Is Active : Yes Primary port : XGigabitEthernet0/0/1 Port status: UP Secondary port: XGigabitEthernet0/0/2 Port status: BLOCKED

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

83

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

You can find that the ring is in Complete state, and the secondary interface of the master node is blocked.

l Run the display rrpp brief command on SwitchC. The following information is displayed:

[SwitchC] display rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge

RRPP Protocol Status: Enable RRPP Working Mode: HW RRPP Linkup Delay Timer: 0 sec (0 sec default). Number of RRPP Domains: 1 Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

------------------------------------------------------------------------ 2 1 M XGigabitEthernet0/0/1 XGigabitEthernet0/0/2 Yes

The output information indicates that RRPP is enabled on SwitchC. The main control VLAN is VLAN 10, and the sub control VLAN is VLAN 11. Switch C is the master node on the subring, with XGE 0/0/1 as the primary interface and XGE 0/0/2 as the secondary interface.

l Run the display rrpp verbose domain command on Switch C. The following information

is displayed:

[SwitchC] display rrpp verbose domain 1 Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec)

RRPP Ring : 2 Ring Level : 1 Node Mode : Master Ring State : Completed Is Enabled : Enable Is Active : Yes Primary port : XGigabitEthernet0/0/1 Port status: UP Secondary port: XGigabitEthernet0/0/2 Port status: BLOCKED

You can find that the subring is in Complete state, and the secondary interface of the master node on the subring is blocked.

l Run the display rrpp brief command on Switch A. The following information is displayed:

[SwitchA] display rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge

RRPP Protocol Status: Enable RRPP Working Mode: HW RRPP Linkup Delay Timer: 0 sec (0 sec default). Number of RRPP Domains: 1

Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

------------------------------------------------------------------------ 1 0 T XGigabitEthernet0/0/2 XGigabitEthernet0/0/1 Yes 2 1 E XGigabitEthernet0/0/2 XGigabitEthernet0/0/3 Yes

You can find that RRPP is enabled on Switch A. The main control VLAN is VLAN 10, and the sub control VLAN is VLAN 11. Switch A is the transit node of the major ring, with XGE 0/0/2 as the primary interface and XGE 0/0/1 as the secondary interface.

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

84

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Switch A is also an edge of the subring, with XGE 0/0/2 as the common interface and XGE 0/0/3 as the edge interface.

l Run the display rrpp verbose domain command on Switch A. The following information

is displayed:

[SwitchA] display rrpp verbose domain 1 Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec)

RRPP Ring : 1 Ring Level : 0 Node Mode : Transit Ring State : Linkup Is Enabled : Enable Is Active : Yes Primary port : XGigabitEthernet0/0/2 Port status: UP Secondary port: XGigabitEthernet0/0/1 Port status: UP

RRPP Ring : 2 Ring Level : 1 Node Mode : Edge Ring State : Linkup Is Enabled : Disable Is Active : No Common port : XGigabitEthernet0/0/2 Port status: UP Edge port : XGigabitEthernet0/0/3 Port status: UP

l Run the display rrpp brief command on Switch D. The following information is displayed:

[SwitchD] display rrpp brief Abbreviations for Switch Node Mode : M - Master , T - Transit , E - Edge , A - Assistant-Edge

RRPP Protocol Status: Enable RRPP Working Mode: HW RRPP Linkup Delay Timer: 0 sec (0 sec default). Number of RRPP Domains: 1

Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec) Ring Ring Node Primary/Common Secondary/Edge Is ID Level Mode Port Port Enabled

------------------------------------------------------------------------ 1 0 T XGigabitEthernet0/0/2 XGigabitEthernet0/0/1 Yes 2 1 A XGigabitEthernet0/0/2 XGigabitEthernet0/0/3 Yes

You can find that RRPP is enabled on Switch D. The main control VLAN is VLAN 10, and the sub control VLAN is VLAN 11. Switch D is the transit node of the major ring, with GXGigabitEthernet0/0/2 as the primary interface and XGigabitEthernet0/0/1 as the secondary interface. Switch D is also the assistant edge node of the major ring, with XGigabitEthernet0/0/2 as the common interface and XGigabitEthernet0/0/3 as the edge interface.

l Run the display rrpp verbose domain command on Switch D. The following information

is displayed:

[SwitchD] display rrpp verbose domain 1 Domain Index : 1 Control VLAN : major 10 sub 11 Protected VLAN : Reference Instance 1 Hello Timer : 1 sec(default is 1 sec) Fail Timer : 6 sec(default is 6 sec)

RRPP Ring : 1 Ring Level : 0 Node Mode : Transit Ring State : Linkup Is Enabled : Enable Is Active : Yes

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

85

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

Primary port : XGigabitEthernet0/0/2 Port status: UP Secondary port: XGigabitEthernet0/0/1 Port status: UP

RRPP Ring : 2 Ring Level : 1 Node Mode : Assistant-edge Ring State : Linkup Is Enabled : Disable Is Active : No Common port : XGigabitEthernet0/0/2 Port status: UP Edge port : XGigabitEthernet0/0/3 Port status: UP

----End

Configuration Files

l Configuration file of Switch A

# sysname SwitchA # vlan batch 2 to 11 # rrpp enable # stp regionconfiguration instance 1 vlan 2 to 11 active regionconfiguration # rrpp domain 1 control-vlan 10 protected-vlan reference-instance 1 ring 1 node-mode transit primary-port XGigabitEthernet 0/0/2 secondary-port XGigabitEthernet 0/0/1 level 0 ring 1 enable ring 2 node-mode edge common-port XGigabitEthernet 0/0/2 edge-port XGigabitEthernet 0/0/3 ring 2 enable # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # interface XGigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # return

l Configuration file of Switch B

# sysname SwitchB # vlan batch 2 to 11 # rrpp enable # stp regionconfiguration instance 1 vlan 2 to

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

86

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

11 active regionconfiguration # rrpp domain 1 control-vlan 10 protected-vlan reference-instance 1 ring 1 node-mode master primary-port XGigabitEthernet 0/0/1 secondary-port XGigabitEthernet 0/0/2 level 0 ring 1 enable # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # return

l Configuration file of the Switch C

# sysname SwitchC # vlan batch 2 to 11 # rrpp enable # stp regionconfiguration instance 1 vlan 2 to 11 active regionconfiguration # rrpp domain 1 control-vlan 10 protected-vlan reference-instance 1 ring 2 node-mode master primary-port XGigabitEthernet 0/0/1 secondary-port XGigabitEthernet 0/0/2 level 1 ring 2 enable # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # return

l Configuration file of Switch D

# sysname SwitchD vlan batch 2 to 11 # rrpp enable # stp regionconfiguration instance 1 vlan 2 to 11 active regionconfiguration

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

87

SwitchD

SwitchC

SwitchA

XGE0/0/3

XGE0/0/2

XGE0/0/1

XGE0/0/2

XGE0/0/4

Domain 1

Domain 2

XGE0/0/2

XGE0/0/1XGE0/0/2

XGE0/0/1

SwitchE

SwitchB

Ring 1

Ring 2

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

# rrpp domain 1 control-vlan 10 protected-vlan reference-instance 1 ring 1 node-mode transit primary-port XGigabitEthernet 0/0/2 secondary-port XGigabitEthernet 0/0/1 level 0 ring 1 enable ring 2 node-mode assistant-edge common-port XGigabitEthernet 0/0/2 edge-port XGigabitEthernet 0/0/3 ring 2 enable # interface XGigabitEthernet0/0/1 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # interface XGigabitEthernet0/0/2 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # interface XGigabitEthernet0/0/3 port link-type trunk port trunk allow-pass vlan 2 to 11 stp disable # return

3.6.3 Example for Configuring Tangent RRPP Rings

Networking Requirements

As shown in Figure 3-7, Switch A, Switch B, Switch C, Switch D, and Switch E support the RRPP function. Switch A, Switch B, and Switch C are on ring 2 of domain 2. Switch C, Switch D, and Switch E are on ring 1 of domain 1. Switch C is the tangent point of the two rings.

Figure 3-7 Networking diagram of tangent RRPP rings

Configuration Roadmap

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

The configuration roadmap is as follows:

88

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

1. Create an instance and add the control VLANs added to the list of protected VLANs.

2. Configure ring 2 of domain 2 on Switch A, Switch B, and Switch C.

3. Configure ring 1 of domain 1 on Switch C, Switch D, and Switch E.

4. Configure Switch A as the master node on ring 2, and configure Switch B and Switch C as transit nodes on ring 2.

5. Configure Switch E as the master node on ring 1, and configure Switch C and Switch D as transit nodes on ring 1.

Data Preparation

To complete the configuration, you need the following data.

l Numbers of the RRPP interfaces

l Control VLAN IDs of ring 1 and ring 2

Procedure

Step 1 Create an instance and add the control VLANs added to the list of protected VLANs.

# Configure Switch A.

<Quidway> system-view [Quidway] sysname SwitchA [SwitchA] stp region-configuration [SwitchA-mst-region] instance 2 vlan 20 to 21 [SwitchA-mst-region] active region-configuration [SwitchA-mst-region] quit

# Configure Switch B.

<Quidway> system-view [Quidway] sysname SwitchB [SwitchB] stp region-configuration [SwitchB-mst-region] instance 2 vlan 20 to 21 [SwitchB-mst-region] active region-configuration [SwitchB-mst-region] quit

# Configure Switch C.

<Quidway> system-view [Quidway] sysname SwitchC [SwitchC] stp region-configuration [SwitchC-mst-region] instance 1 vlan 10 to 11 [SwitchC-mst-region] instance 2 vlan 20 to 21 [SwitchC-mst-region] active region-configuration [SwitchC-mst-region] quit

# Configure Switch D.

<Quidway> system-view [Quidway] sysname SwitchD [SwitchD] stp region-configuration [SwitchD-mst-region] instance 1 vlan 10 to 11 [SwitchD-mst-region] active region-configuration [SwitchD-mst-region] quit

# Configure Switch E.

<Quidway> system-view [Quidway] sysname SwitchE [SwitchE] stp region-configuration [SwitchE-mst-region] instance 1 vlan 10 to 11

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

89

Quidway S6700 Series Ethernet Switches Configuration Guide - Reliability 3 RRPP Configuration

[SwitchE-mst-region] active region-configuration [SwitchE-mst-region] quit

Step 2 Create RRPP domains and configure the control VLANs and protected VLANs of the domains.

# Configure domain 1 on Switch E, which is the master node of ring 1. Configure VLAN 10 as the main control VLAN of domain 1, and configure the list of protected VLANs mapping instance 1.

[SwitchE] rrpp domain 1 [SwitchE-rrpp-domain-region1] control-vlan 10 [SwitchE-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchE-rrpp-domain-region1] quit

# Configure domain 1 on Switch C, which is the transit node of ring 1. Configure VLAN 10 as the main control VLAN of domain 1, and configure the list of protected VLANs mapping instance 1.

[SwitchC] rrpp domain 1 [SwitchC-rrpp-domain-region1] control-vlan 10 [SwitchC-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchC-rrpp-domain-region1] quit

# Configure domain 1 on Switch D, which is the transit node of ring 1. Configure VLAN 10 as the main control VLAN of domain 1, and configure the list of protected VLANs of instance 1.

[SwitchD] rrpp domain 1 [SwitchD-rrpp-domain-region1] control-vlan 10 [SwitchD-rrpp-domain-region1] protected-vlan reference-instance 1 [SwitchD-rrpp-domain-region1] quit

# Configure domain 2 on Switch E, which is the master node of ring 2. Configure VLAN 20 as the main control VLAN of domain 2, and configure the list of protected VLANs mapping instance 1.

[SwitchA] rrpp domain 2 [SwitchA-rrpp-domain-region2] control-vlan 20 [SwitchA-rrpp-domain-region2] protected-vlan reference-instance 2 [SwitchA-rrpp-domain-region2] quit

# Configure domain 2 on Switch B, which is the transit node of ring 2. Configure VLAN 20 as the main control VLAN of domain 2, and configure the list of protected VLANs of instance 2.

[SwitchB] rrpp domain 2 [SwitchB-rrpp-domain-region2] control-vlan 20 [SwitchB-rrpp-domain-region2] protected-vlan reference-instance 2 [SwitchB-rrpp-domain-region2] quit

# Configure domain 2 on Switch C, which is the transit node of ring 2. Configure VLAN 20 as the main control VLAN of domain 2, and configure the list of protected VLANs of instance 2.

[SwitchC] rrpp domain 2 [SwitchC-rrpp-domain-region2] control-vlan 20 [SwitchC-rrpp-domain-region2] protected-vlan reference-instance 2 [SwitchC-rrpp-domain-region2] quit

Step 3 Set the timers of the RRPP domains

NOTE

You can set two timers for the tangent point because the two tangent rings reside in different domains.

# Set the Hold timer and Fail timer for Switch E, the master node on ring 1.

[SwitchE] rrpp domain 1 [SwitchE-rrpp-domain-region1] timer hello-timer 2 fail-timer 7 [SwitchE-rrpp-domain-region1] quit

Issue 01 (2011-07-15) Huawei Proprietary and Confidential

90

Huawei Quidway S6700 Configuration Guide - Reliability

Specifications and Main Features

Frequently Asked Questions

User Manual

About This Document

Contents

1 DLDP Configuration

1.1 Introduction to DLDP

1.2 Configuring DLDP Functions

1.2.1 Establishing the Configuration Task

1.2.2 Enabling DLDP

1.2.3 (Optional) Setting the Operating Mode of DLDP

1.2.4 (Optional) Enabling DLDP Compatible Mode

1.2.5 (Optional) Setting the Interval for Sending Advertisement Packets

1.2.6 (Optional) Setting the Delay Down Timer

1.2.7 (Optional) Setting the Interface Blocking Mode

1.2.8 (Optional) Setting the Authentication Mode of DLDP Packets

1.2.9 Checking the Configuration

1.3 Resetting the DLDP Status

1.3.1 Establishing the Configuration Task

1.3.2 Resetting the DLDP Status Globally

1.3.3 Resetting the DLDP Status of an Interface

1.3.4 Checking the Configuration

1.4 Maintaining DLDP

1.4.1 Clearing the Statistics of DLDP

1.5 Configuration Examples

1.5.1 Example for Configuring DLDP

2 Smart Link and Monitor Link Configuration

2.1 Smart Link and Monitor Link

2.2 Configuring a Smart Link Group

2.2.1 Establishing the Configuration Task

2.2.2 Creating and Enabling a Smart Link Group

2.2.3 Configuring the Master and Slave Interfaces in a Smart Link Group

2.2.4 Enabling the Sending of Flush Packets

2.2.5 (Optional) Configuring Load Balancing in a Smart Link Group

2.2.6 (Optional) Enabling Revertive Switching and Setting the WTR Time

2.2.7 (Optional) Enabling the Receiving of Flush Packets

2.2.8 (Optional) Setting the Holdtime of the Smart Link Switchover

2.2.9 Enabling the Functions of the Smart Link Group

2.2.10 Checking the Configuration

2.3 Configuring a Flow Control Policy in a Smart Link Group

2.3.1 Establishing the Configuration Task

2.3.2 Locking Data Flows on the Master Interface

2.3.3 Locking Data Flows on the Slave Interface

2.3.4 Switching Data Flows Manually

2.3.5 Checking the Configuration

2.4 Configuring a Monitor Link Group

2.4.1 Establishing the Configuration Task

2.4.2 Creating a Monitor Link Group

2.4.3 Configuring the Uplink and Downlink Interfaces in a Monitor Link Group

2.4.4 Setting the Revertive Switching Interval of a Monitor Link group

2.4.5 Checking the Configuration

2.5 Maintaining the Smart Link

2.5.1 Debugging the Smart Link

2.6 Configuration Examples

2.6.1 Example for Configuring Basic Functions of Smart Link

2.6.2 Example for Configuring Load Balancing Between Active and Standby Links of a Smart Link Group

2.6.3 Example for Applying the Smart Link Functions

3 RRPP Configuration

3.1 Overview of RRPP

3.2 RRPP Features Supported by the S6700

3.3 Configuring RRPP Functions

3.3.1 Establishing the Configuration Task

3.3.2 Creating Instances

3.3.3 Configuring Interfaces on the RRPP Ring

3.3.4 Creating the RRPP Domain

3.3.5 Creating the Control VLAN

3.3.6 Specifying Protected VLANs

3.3.7 Creating an RRPP Ring

3.3.8 Enabling the RRPP Ring

3.3.9 Enabling RRPP

3.3.10 (Optional) Setting the Values of RRPP Domain Timers

3.3.11 Checking the Configuration

3.4 Configuring RRPP Multi-Instance

3.4.1 Establishing the Configuration Task

3.4.2 Creating Instances

3.4.3 Configuring Interfaces on the RRPP Ring

3.4.4 Creating an RRPP Domain

3.4.5 Specifying Protected VLANs

3.4.6 Creating a Control VLAN