Cisco Systems A9014CFD User Manual 2
Cisco ASR 901 Series Aggregation
Services Router Software Configuration
Guide
November 21, 2013
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Text Part Number: OL-23826-09
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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
Copyright © 2011-2013, Cisco Systems, Inc.
All rights reserved. Printed in USA
CONTENTS
Document Revision History xxxvii
Objectives xlvii
Audience xlvii
Organization xlvii
Conventions l
Related Documentation li
Obtaining Documentation, Obtaining Support, and Security Guidelines li
CHAPTER
CHAPTER
1 Cisco ASR 901 Router Overview 1-1
Introduction 1-2
Features 1-2
Performance Features 1-2
Management Options 1-3
Manageability Features 1-3
Security Features 1-4
Quality of Service and Class of Service Features 1-4
Layer 3 Features 1-5
Layer 3 VPN Services 1-5
Monitoring Features 1-5
2 Licensing 2-1
Finding Feature Information 2-1
Contents 2-1
Feature Overview 2-2
Licenses Supported on Cisco ASR 901 Router 2-2
License Types 2-4
Image Level License 2-4
Features Supported 2-4
Feature Based License 2-4
Port Based/Mode License 2-5
1588BC License 2-5
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Port or Interface Behavior 2-5
Port Based License 2-6
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Example: When Port Based License is not Installed 2-6
Example: When Port Based License is Installed 2-6
10gigUpgrade License 2-7
Example: When 10gigUpgrade License is not Installed 2-7
Example: When 10gigUpgrade License is Installed 2-8
Flexi License 2-8
Example: When Flexi License is not Installed 2-8
Example: When Flexi License is Installed 2-9
1588BC License 2-9
Example: When 1588BC License is not Installed 2-9
Example: When 1588BC License is Installed 2-9
Removing the 1588BC License 2-10
Generating the License 2-11
Installing the License 2-11
Changing the License 2-12
CHAPTER
Return Materials Authorization License Process 2-13
Example: RMA Process 2-13
Verifying the License 2-14
Where to Go Next 2-14
Additional References 2-15
Related Documents 2-15
Standards 2-15
MIBs 2-15
RFCs 2-15
Technical Assistance 2-16
Feature Information for Licensing 2-17
3 First-Time Configuration 3-1
Contents 3-1
Setup Mode 3-1
Before Starting Your Router 3-1
Using Setup Mode 3-2
Configuring Global Parameters 3-2
Completing the Configuration 3-4
iv
Verifying the Cisco IOS Software Version 3-5
Configuring the Hostname and Password 3-5
Verifying the Hostname and Password 3-6
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Contents
CHAPTER
4 Managing and Monitoring Network Management Features 4-1
Finding Feature Information 4-1
Contents 4-1
Network Management Features for the ASR 901 4-2
Cisco Active Network Abstraction (ANA) 4-2
SNMP MIB Support 4-2
Cisco Networking Services (CNS) 4-2
How to Configure Network Management Features on ASR 901 4-2
Configuring SNMP Support 4-3
Configuring Remote Network Management 4-8
Enabling Cisco Networking Services (CNS) and Zero-Touch Deployment 4-10
Zero-Touch Deployment 4-10
Image Download 4-11
Configuring a DHCP Server 4-12
Configuring a TFTP Server 4-13
Creating a Bootstrap Configuration 4-13
Enabling a TFTP Server on the Edge Router 4-14
Configuring the Cisco Configuration Engine 4-14
CHAPTER
Configuration Examples 4-15
Example: Configuring SNMP Support 4-15
Example: Configuring Remote Network Management 4-15
Example: Configuring a DHCP Server 4-15
Example: Zero-touch Deployment 4-16
Where to Go Next 4-16
Additional References 4-16
Related Documents 4-16
Standards 4-16
MIBs 4-17
RFCs 4-17
Technical Assistance 4-17
Feature Information for Monitoring and Managing the ASR 901 Router 4-18
5 Using the Command-Line Interface 5-1
Contents 5-1
Understanding Command Modes 5-1
Understanding the Help System 5-3
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Understanding Abbreviated Commands 5-4
Understanding no and default Forms of Commands 5-4
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Understanding CLI Error Messages 5-4
Using Command History 5-5
Changing the Command History Buffer Size 5-5
Recalling Commands 5-6
Disabling the Command History Feature 5-6
Using Editing Features 5-6
Enabling and Disabling Editing Features 5-6
Editing Commands through Keystrokes 5-7
Editing Command Lines that Wrap 5-8
Searching and Filtering Output of show and more Commands 5-9
Accessing the CLI 5-9
Accessing the CLI through a Console Connection or through Telnet 5-9
Saving Configuration Changes 5-10
CHAPTER
CHAPTER
6 Software Upgrade 6-1
Contents 6-1
Selecting a Cisco IOS Image 6-1
Upgrading the Cisco IOS image 6-1
Auto Upgrading the MCU 6-4
Manually Upgrading the ROMMON 6-5
Auto Upgrade of ROMMON 6-6
7 Configuring Gigabit Ethernet Interfaces 7-1
Contents 7-1
Configuring the Interface 7-1
Setting the Speed and Duplex Mode 7-2
Enabling the Interface 7-3
Modifying MTU Size on the Interface 7-3
Verifying the MTU Size 7-4
MAC Flap Control 7-5
Configuring MAC FLap Control 7-5
CHAPTER
vi
Configuring a Combo Port 7-6
Restrictions 7-6
Verifying the Media Type 7-8
8 Configuring Ethernet Virtual Connections 8-1
Finding Feature Information 8-1
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Contents 8-1
Supported EVC Features 8-2
Understanding EVC Features 8-3
Ethernet Virtual Connections 8-3
Service Instances and EFPs 8-3
Encapsulation 8-4
Bridge Domains 8-5
DHCP Client on Switch Virtual Interface 8-6
Split-Horizon 8-6
Rewrite Operations 8-6
Configuring EFPs 8-7
Default EVC Configuration 8-7
Configuration Guidelines 8-7
Creating Service Instances 8-8
Configuration Examples of Supported Features 8-10
Example: Configuring a Service Instance 8-10
Example: Encapsulation Using a VLAN Range 8-10
Example: Two Service Instances Joining the Same Bridge Domain 8-10
Example: Bridge Domains and VLAN Encapsulation 8-10
Example: Rewrite 8-11
Example: Split Horizon 8-11
Contents
Configuration Examples of Unsupported Features 8-12
Example: Filtering 8-12
Example: Overlapping Encapsulation 8-12
How to Configure EVC Default Encapsulation 8-13
Configuring EVC Default Encapsulation with Bridge-Domain 8-13
Configuring EVC Default Encapsulation with Xconnect 8-14
Verifying EVC Default Encapsulation with Bridge-Domain 8-15
Verifying EVC Default Encapsulation with Xconnect 8-16
Configuration Examples for EVC Default Encapsulation 8-16
Example: Configuring EVC Default Encapsulation with Bridge-Domain 8-16
Example: Configuring EVC Default Encapsulation with Xconnect 8-16
Configuring Other Features on EFPs 8-16
EFPs and EtherChannels 8-17
MAC Address Forwarding, Learning and Aging on EFPs 8-17
Disabling MAC Address Learning on an Interface or Bridge Domain 8-18
Configuring IEEE 802.1Q Tunneling using EFPs 8-20
802.1Q Tunneling (QinQ) 8-20
Restrictions 8-22
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Configuration Examples 8-22
Routed QinQ 8-23
Restrictions 8-23
Configuration Example 8-23
Bridge Domain Routing 8-24
Restrictions 8-24
Example: Configuring Bridge-Domain Routing 8-24
How to Configure DHCP Client on SVI 8-25
Configuring DHCP Client on SVI 8-25
Verifying DHCP Client on SVI 8-26
Configuration Example for DHCP Client on SVI 8-26
EFPs and Switchport MAC Addresses 8-27
EFPs and MSTP 8-27
Monitoring EVC 8-28
Sample Configuration with Switchport to EVC Mapping 8-29
Configuration Example 8-30
CHAPTER
Additional References 8-32
Related Documents 8-32
Standards 8-32
MIBs 8-32
RFCs 8-32
Technical Assistance 8-32
Feature Information for Configuring Ethernet Virtual Connections 8-33
9 Configuring EtherChannels 9-1
Contents 9-1
Understanding How EtherChannels Work 9-1
EtherChannel Feature Overview 9-1
Understanding How EtherChannels Are Configured 9-2
EtherChannel Configuration Overview 9-2
Understanding Manual EtherChannel Configuration 9-2
Understanding IEEE 802.3ad LACP EtherChannel Configuration 9-2
Understanding Port-Channel Interfaces 9-4
Understanding Load Balancing 9-4
viii
EtherChannel Configuration Guidelines and Restrictions 9-4
Configuring Etherchannels 9-5
Configuring Channel Groups 9-5
Configuring the LACP System Priority and System ID 9-6
Configuring the LACP Transmit Rate 9-7
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Verifying the LACP Transmit Rate 9-8
Configuring EtherChannel Load Balancing 9-8
Modifying MTU Size on Port-Channel 9-9
Restrictions 9-9
Verifying the MTU Size on Port-Channel 9-9
EVC On Port-Channel 9-10
Restrictions for EVC EtherChannel 9-10
Configuring EVC on Port-Channel 9-11
Verifying the Configuration 9-11
Troubleshooting 9-12
Contents
CHAPTER
10 Configuring Ethernet OAM 10-1
Contents 10-1
Understanding Ethernet CFM 10-2
IP SLA Support for CFM 10-2
Configuring Ethernet CFM 10-2
Default Ethernet CFM Configuration 10-3
Ethernet CFM Configuration Restrictions and Guidelines 10-3
Configuring the CFM Domain 10-3
Configuring Multi-UNI CFM MEPs in the Same VPN 10-7
Configuring Ethernet CFM Crosscheck 10-12
Configuring Static Remote MEP 10-13
Configuring a Port MEP 10-14
Configuring SNMP Traps 10-15
Configuring IP SLA CFM Operation 10-16
Manually Configuring an IP SLA CFM Probe or Jitter Operation 10-16
Configuring CFM over EFP with Cross Connect 10-19
Configuring CFM over EFP Interface with Cross Connect 10-20
Configuring CFM over EFP Interface with Cross Connect—Port Channel-Based Cross Connect
Tunnel
10-22
Configuring CFM with EVC Default Encapsulation 10-24
Verifying CFM with EVC Default Encapsulation 10-25
Example: Configuring CFM with EVC Default Encapsulation 10-26
Configuring Y.1731 Fault Management 10-26
Default Y.1731 Configuration 10-26
Configuring ETH-AIS 10-27
Configuring ETH-LCK 10-28
Managing and Displaying Ethernet CFM Information 10-30
Understanding the Ethernet OAM Protocol 10-32
OAM Features 10-33
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Contents
Setting Up and Configuring Ethernet OAM 10-35
Default Ethernet OAM Configuration 10-36
Restrictions and Guidelines 10-36
Enabling Ethernet OAM on an Interface 10-36
Enabling Ethernet OAM Remote Loopback 10-38
Configuring Ethernet OAM Link Monitoring 10-38
Configuring Ethernet OAM Remote Failure Indications 10-41
Configuring Ethernet OAM Templates 10-42
Displaying Ethernet OAM Protocol Information 10-45
Verifying Ethernet OAM Configuration 10-46
Understanding E-LMI 10-48
Restrictions 10-49
Configuring E-LMI 10-49
Default E-LMI Configuration 10-49
Enabling E-LMI 10-50
Displaying E-LMI Information 10-51
CHAPTER
Understanding Ethernet Loopback 10-51
Configuring Ethernet Loopback 10-51
Restrictions 10-52
Enabling Ethernet Loopback 10-52
Configuration Example 10-54
Configuring Y.1564 to Generate Ethernet Traffic 10-56
Configuring IP SLA for Traffic Generation 10-58
Configuration Examples 10-60
11 ITU-T Y.1731 Performance Monitoring 11-1
Finding Feature Information 11-1
Contents 11-1
Prerequisites for ITU-T Y.1731 Performance Monitoring 11-1
Restrictions for ITU-T Y.1731 Performance Monitoring 11-2
Information About ITU-T Y.1731 Performance Monitoring 11-2
Frame Delay and Frame-Delay Variation 11-3
Frame Loss Ratio 11-4
On-Demand and Concurrent Operations 11-4
Supported interfaces 11-5
Benefits of ITU-T Y.1731 Performance Monitoring 11-5
How to Configure ITU-T Y.1731 Performance Monitoring 11-5
Configuring Two-Way Delay Measurement 11-6
Configuring Single-Ended Synthetic Loss Measurement 11-9
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Scheduling IP SLAs Operations 11-14
Prerequisites 11-14
Verifying the Frame Delay and Synthetic Loss Measurement Configurations 11-15
Example: Verifying Sender MEP for a Two-Way Delay Measurement Operation 11-16
Example: Verifying Receiver MEP for a Two-Way Delay Measurement Operation 11-16
Example: Verifying Sender MEP for a Synthetic Loss Measurement Operation 11-17
Example: Verifying Ethernet CFM Performance Monitoring 11-17
Example: Verifying History for IP SLAs Operations 11-18
How to Configure IP SLAs Y.1731 On-Demand and Concurrent Operations 11-19
Configuring Direct On-Demand Operation on a Sender MEP 11-19
Prerequisites 11-19
Configuring Referenced On-Demand Operation on a Sender MEP 11-20
Prerequisites 11-20
Configuring IP SLAs Y.1731 Concurrent Operation on a Sender MEP 11-21
Configuration Examples for IP SLAs Y.1731 On-Demand Operations 11-21
Example: On-Demand Operation in Direct Mode 11-21
Example: On-Demand Operation in Referenced Mode 11-22
Contents
CHAPTER
Additional References 11-23
Related Documents 11-23
Standards 11-23
MIBs 11-23
RFCs 11-23
Technical Assistance 11-24
Feature Information for ITU-T Y.1731 Performance Monitoring 11-25
12 Configuring Resilient Ethernet Protocol 12-1
Contents 12-1
Understanding Resilient Ethernet Protocol (REP) 12-1
Overview 12-1
Restrictions 12-3
Link Integrity 12-4
Fast Convergence 12-4
VLAN Load Balancing (VLB) 12-4
REP Ports 12-6
Configuring Resilient Ethernet Protocol (REP) 12-7
Default REP Configuration 12-7
REP Configuration Guidelines 12-7
Configuring the REP Administrative VLAN 12-9
SUMMARY STEPS 12-9
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DETAILED STEPS 12-9
Configuring REP Interfaces 12-10
SUMMARY STEPS 12-10
DETAILED STEPS 12-11
Configuring REP as Dual Edge No-Neighbor Port 12-15
SUMMARY STEPS 12-15
DETAILED STEPS 12-16
Cisco ASR 901 Dual Rep Edge No-Neighbor Topology Example 12-18
Setting up Manual Preemption for VLAN Load Balancing 12-20
SUMMARY STEPS 12-20
DETAILED STEPS 12-20
Configuring SNMP Traps for REP 12-21
SUMMARY STEPS 12-21
DETAILED STEPS 12-21
Monitoring REP 12-22
SUMMARY STEPS 12-22
DETAILED STEPS 12-23
CHAPTER
Configuration Examples for REP 12-24
Configuring the REP Administrative VLAN: Example 12-24
Configuring a REP Interface: Example 12-24
Setting up the Preemption for VLAN Load Balancing: Example 12-25
Configuring SNMP Traps for REP: Example 12-25
Monitoring the REP Configuration: Example 12-25
Cisco ASR 901 Topology Example 12-26
13 Configuring MST on EVC Bridge Domain 13-1
Contents 13-1
Overview of MST and STP 13-1
Overview of MST on EVC Bridge Domain 13-2
Restrictions and Guidelines 13-2
Configuring MST on EVC Bridge Domain 13-4
Configuration Example for MST on EVC Bridge Domain 13-6
Verification 13-6
Troubleshooting Tips 13-9
CHAPTER
CHAPTER
xii
14 Configuring Multiprotocol Label Switching 14-1
15 Configuring EoMPLS 15-1
Contents 15-1
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Understanding EoMPLS 15-1
Restrictions 15-2
Configuring EoMPLS 15-2
EoMPLS Configuration Example 15-3
Configuring Pseudowire Redundancy 15-4
Configuration Commands 15-4
Port Based EoMPLS 15-5
Contents
CHAPTER
CHAPTER
16 Configuring MPLS VPNs 16-1
Contents 16-1
Understanding MPLS VPNs 16-1
Configuring MPLS VPNs 16-2
Configuration Examples for MPLS VPN 16-2
17 Configuring MPLS OAM 17-1
Contents 17-1
Understanding MPLS OAM 17-1
LSP Ping 17-1
LSP Traceroute 17-2
LSP Ping over Pseudowire 17-2
Configuring MPLS OAM 17-2
Using LSP Ping for LDP IPv4 FEC 17-3
Using LSP Traceroute for LDP IPv4 FEC 17-3
Using LSP Ping for Pseudowire 17-3
Using LSP Traceroute over Pseudowire 17-4
Displaying AToM VCCV capabilities 17-4
17-4
CHAPTER
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18 Configuring Routing Protocols 18-1
Changing Default Hashing Algorithm for ECMP 18-1
19 Configuring Bidirectional Forwarding Detection 19-1
Contents 19-1
Understanding BFD 19-1
Configuring BFD 19-1
BFD Configuration Guidelines and Restrictions 19-2
Configuring BFD for OSPF 19-2
Configuring BFD for OSPF on One of More Interfaces 19-2
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Configuring BFD for OSPF on All Interfaces 19-3
Configuring BFD for BGP 19-4
Configuring BFD for IS-IS 19-4
Configuring BFD for IS-IS on a Single Interface 19-4
Configuring BFD for IS-IS for All Interfaces 19-5
Configuring BFD for Static Routes 19-6
Configuration Examples for BFD 19-7
BFD with OSPF on All Interfaces 19-7
BFD with OSPF on Individual Interfaces 19-7
BFD with BGP 19-8
BFD with IS-IS on All Interfaces 19-8
BFD with IS-IS on Individual Interfaces 19-8
BFD with Static Routes 19-9
CHAPTER
CHAPTER
20 Configuring T1/E1 Controllers 20-1
Contents 20-1
Configuring the Card Type 20-1
Configuring E1 Controllers 20-2
Configuring T1 Controllers 20-4
Troubleshooting Controllers 20-5
Troubleshooting E1 Controllers 20-5
Troubleshooting T1 Controllers 20-6
21 Configuring Pseudowire 21-1
Finding Feature Information 21-1
Contents 21-1
Understanding Pseudowires 21-2
Structure-Agnostic TDM over Packet 21-2
Structure-Aware TDM Circuit Emulation Service over Packet-Switched Network 21-3
Transportation of Service Using Ethernet over MPLS 21-3
Limitations 21-3
xiv
Hot Standby Pseudowire Support for ATM/IMA 21-3
Configuring Pseudowire 21-4
Configuring Pseudowire Classes 21-4
Configuring CEM Classes 21-6
Configuring a Backup Peer 21-8
Configuring Structure-Agnostic TDM over Packet 21-9
Configuring a SAToP Pseudowire with UDP Encapsulation 21-11
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Configuring Circuit Emulation Service over Packet-Switched Network 21-14
Configuring a CESoPSN Pseudowire with UDP Encapsulation 21-15
QoS for CESoPSN over UDP and SAToP over UDP 21-18
Configuring Transportation of Service Using Ethernet over MPLS 21-18
Configuring L2VPN Pseudowire Redundancy 21-20
Example: Pseudowire Redundancy 21-22
Configuring Hot Standby Pseudowire Support for ATM/IMA 21-22
Configuring ATM/IMA Pseudowire Redundancy in PVC Mode 21-22
Configuring ATM/IMA Pseudowire Redundancy in PVP Mode 21-24
Configuring ATM/IMA Pseudowire Redundancy in Port Mode 21-25
Verifying Hot Standby Pseudowire Support for ATM/IMA 21-26
TDM Local Switching 21-27
Restrictions 21-28
Configuring TDM Local Switching on a T1/E1 Mode 21-28
DETAILED STEPS 21-28
Verifying Local Switching 21-29
Contents
CHAPTER
Configuration Example for Local Switching 21-29
Configuration Examples of Hot Standby Pseudowire Support for ATM/IMA 21-30
Example: Configuring ATM/IMA Pseudowire Redundancy in PVC Mode 21-30
Example: Configuring ATM/IMA Pseudowire Redundancy in PVP Mode 21-30
Example: Configuring ATM/IMA Pseudowire Redundancy in Port Mode 21-31
Configuration Examples for Pseudowire 21-31
Example: TDM over MPLS Configuration-Example 21-31
Example: CESoPSN with UDP 21-34
Example: Ethernet over MPLS 21-35
Additional References 21-36
Related Documents 21-36
Standards 21-36
MIBs 21-36
RFCs 21-36
Technical Assistance 21-36
Feature Information for Configuring Pseudowire 21-37
22 Configuring Clocking 22-1
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Restrictions 22-1
Configuring Network Clock for Cisco ASR 901 Router 22-2
Configuring Network Clock in Global Configuration Mode 22-3
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Configuring Network Clock in Interface Configuration Mode 22-6
Understanding SSM and ESMC 22-7
Synchronization Status Message 22-7
Ethernet Synchronization Messaging Channel 22-7
Clock Selection Algorithm 22-7
ESMC behavior for Port Channels 22-8
ESMC behavior for STP Blocked Ports 22-8
Configuring ESMC in Global Configuration Mode 22-8
Configuring ESMC in Interface Configuration Mode 22-9
Verifying ESMC Configuration 22-10
Managing Synchronization 22-11
Synchronization Example 22-12
Configuring Synchronous Ethernet for Copper Ports 22-13
Verifying the Synchronous Ethernet configuration 22-13
Troubleshooting Tips 22-16
Troubleshooting ESMC Configuration 22-17
Configuring PTP for the Cisco ASR 901 Router 22-18
Restrictions 22-18
Setting System Time to Current Time 22-19
Configuring PTP Ordinary Clock 22-19
Configuring Master Ordinary Clock 22-19
Configuring Slave Ordinary Clock 22-21
Configuring PTP in Unicast Mode 22-25
Configuring PTP in Unicast Negotiation Mode 22-25
PTP Boundary Clock 22-26
Configuring PTP Boundary Clock 22-27
Verifying PTP modes 22-29
Verifying PTP Configuration on the 1588V2 Slave 22-31
Verifying PTP Configuration on the 1588V2 Master 22-32
PTP Hybrid Clock 22-34
Configuring a Hybrid Ordinary Clock 22-34
Configuring a Hybrid Boundary Clock 22-37
Verifying Hybrid modes 22-38
SSM and PTP Interaction 22-39
ClockClass Mapping 22-40
Telecom Profiles 22-40
PTP Redundancy 22-40
Configuring Telecom Profile in Slave Ordinary Clock 22-41
Configuring Telecom Profile in Master Ordinary Clock 22-43
Verifying Telecom profile 22-44
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Setting the TimeProperties 22-46
ASR901 Negotiation Mechanism 22-46
Static Unicast Mode 22-46
Configuring ToD on 1588V2 Slave 22-47
Troubleshooting Tips 22-47
Contents
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23 Cisco IOS IP SLA 23-1
Contents 23-1
Configuring IPSLA Path Discovery 23-1
Example for IPSLA Path Discovery 23-3
Two-Way Active Measurement Protocol 23-5
Configuring TWAMP 23-6
Configuring the TWAMP Server 23-7
Configuring the TWAMP Reflector 23-8
Configuration Examples for TWAMP 23-8
Example: Configuring the Router as an IP SLA TWAMP server 23-9
Example: Configuring the Router as an IP SLA TWAMP Reflector 23-9
24 Configuring QoS 24-1
Finding Feature Information 24-1
Contents 24-1
Understanding QoS 24-2
Modular QoS CLI 24-4
Input and Output Policies 24-5
Input Policy Maps 24-5
Output Policy Maps 24-6
Access Control Lists 24-6
Restrictions 24-6
Classification 24-7
Class Maps 24-8
The match Command 24-8
Classification Based on Layer 2 CoS 24-9
Classification Based on IP Precedence 24-9
Classification Based on IP DSCP 24-9
Classification Comparisons 24-10
Classification Based on QoS Groups 24-11
Classification Based on VLAN IDs 24-12
Table Maps 24-13
Policing 24-14
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Individual Policing 24-15
Unconditional Priority Policing 24-16
Egress Policing 24-17
Marking 24-18
Congestion Management and Scheduling 24-19
Traffic Shaping 24-19
Class-Based Weighted Fair Queuing 24-21
Priority Queuing 24-23
Ingress and Egress QoS Functions 24-24
Configuring Quality of Service (QoS) 24-25
QoS Limitations 24-25
General QoS Limitations 24-26
Statistics Limitations 24-26
Propagation Limitations 24-27
Classification Limitations 24-27
Marking Limitations 24-28
Congestion Management Limitations 24-29
ACL-based QoS Restrictions 24-30
Improving Feature Scalability 24-31
TCAM with QoS 24-31
QoS for MPLS/IP over MLPPP 24-31
QoS for CPU Generated Traffic 24-31
QoS Configuration Guidelines 24-32
Sample QoS Configuration 24-33
Configuring Classification 24-34
Creating a Class Map for Classifying Network Traffic 24-34
Creating a Policy Map for Applying a QoS Feature to Network Traffic 24-35
Attaching the Policy Map to an Interface 24-36
Attaching Policy Map to Cross Connect EVC 24-37
Configuring Marking 24-38
Creating a Class Map for Marking Network Traffic 24-39
Creating a Policy Map for Applying a QoS Feature to Network Traffic 24-39
Attaching the Policy Map to an Interface 24-40
Configuring MPLS Exp Bit Marking using a Pseudowire 24-41
Configuring Congestion Management 24-42
Configuring Low Latency Queueing (LLQ) 24-42
Configuring Multiple Priority Queueing 24-43
Configuration Examples 24-44
Configuring Class-Based Weighted Fair Queuing (CBFQ) 24-45
Weighted Random Early Detection (WRED) 24-46
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Configuring Shaping 24-47
Configuring Class-Based Traffic Shaping in a Primary-Level (Parent) Policy Map 24-47
Configuring the Secondary-Level (Child) Policy Map 24-48
Configuring Ethernet Trusted Mode 24-49
Creating IP Extended ACLs 24-49
Using Class Maps to Define a Traffic Class 24-50
Creating a Named Access List 24-52
Restrictions 24-52
What to do Next 24-53
TCAM with ACL 24-54
Verifying Named Access List 24-55
Configuration Example for Named Access List 24-56
QoS Treatment for Performance-Monitoring Protocols 24-62
Cisco IP-SLAs 24-62
QoS Treatment for IP-SLA Probes 24-62
Marking 24-62
Queuing 24-62
QoS Marking for CPU-Generated Traffic 24-62
QoS Queuing for CPU-Generated Traffic 24-63
Contents
Extending QoS for MLPPP 24-64
Configuring Class-map for Matching MPLS EXP Bits 24-64
Configuring Class-map for Matching IP DSCP Value 24-65
Configuring Class-map for Matching MPLS EXP Bits or IP DSCP Value 24-66
Configuring a Policy-map 24-67
Attaching the Policy-map to MLPPP Interface 24-70
Re-marking IP DSCP Values of CPU Generated Traffic 24-72
Re-marking MPLS EXP Values of CPU Generated Traffic 24-73
Configuring a Policy-map to Match on CS5 and EXP4 24-74
Attaching the Policy-map to Match on CS5 and EXP4 to MLPPP Interface 24-76
Configuration Examples for Extending QoS for MPLS over MLPPP 24-76
Configuring Class-map for Matching MPLS EXP Bits 24-76
Configuring Class-map for Matching IP DSCP Value 24-77
Configuring Class-map for Matching MPLS EXP Bits or IP DSCP Value 24-77
Configuring a Policy-map 24-77
Configuring a Policy-map to Match on CS5 and EXP 4 24-78
Attaching the Policy-map to MLPPP Interface 24-78
Verifying MPLS over MLPPP Configuration 24-79
Configuration Guidelines 24-80
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Additional References 24-87
Related Documents 24-87
Standards 24-87
MIBs 24-87
RFCs 24-87
Technical Assistance 24-87
Feature Information for Configuring QoS 24-88
CHAPTER
25 Configuring MLPPP 25-1
Finding Feature Information 25-1
Contents 25-1
Prerequisites 25-2
Restrictions 25-2
MLPPP Optimization Features 25-2
Distributed Multilink Point-to-Point Protocol Offload 25-2
Multiclass MLPPP 25-3
MPLS over MLPPP 25-3
MPLS Features Supported for MLPPP 25-4
MPLS over MLPPP on PE-to-CE Links 25-4
MPLS over MLPPP on Core Links 25-5
MPLS over MLPPP on CE to PE Links 25-5
Configuring MLPPP Backhaul 25-6
Configuring the Card Type, E1 and T1 Controllers 25-6
Configuring a Multilink Backhaul Interface 25-6
Creating a Multilink Bundle 25-6
Configuring MRRU 25-7
Configuring PFC and ACFC 25-8
Enabling Multilink and Identifying the Multilink Interface 25-11
Configuring a Serial Interface as a Member Link of a MLPPP Group 25-12
MLPPP Offload 25-13
Configuring Additional MLPPP Settings 25-14
Configuring MPLS over the MLPPP on a Serial Interface 25-14
Configuring MPLS over MLPPP for OSPF 25-16
Configuration Examples for MPLS over MLPPP 25-18
Verifying MPLS over MLPPP Configuration 25-19
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Additional References 25-21
Related Documents 25-21
Standards 25-21
MIBs 25-21
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RFCs 25-21
Technical Assistance 25-21
Feature Information for MLPPP 25-22
Contents
CHAPTER
CHAPTER
26 Onboard Failure Logging 26-1
Contents 26-1
Understanding OBFL 26-1
Configuring OBFL 26-2
Verifying OBFL Configuration 26-2
27 Hot Standby Router Protocol and Virtual Router Redundancy Protocol 27-1
Finding Feature Information 27-1
Contents 27-1
Information About HSRP and VRRP 27-2
Overview of HSRP and VRRP 27-2
Text Authentication 27-2
Preemption 27-2
How to Configure HSRP 27-3
Configuring HSRP 27-3
Restrictions 27-3
Configuration Examples for HSRP 27-5
Example: Configuring HSRP Active Router 27-5
Example: Configuring HSRP Backup Router 27-5
Example: HSRP Text Authentication 27-6
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How to Configure VRRP 27-6
Configuring VRRP 27-6
Restrictions 27-6
Configuration Examples for VRRP 27-8
Example: Configuring a VRRP Master Router 27-8
Example: Configuring a VRRP Backup Router 27-8
Example: VRRP Text Authentication 27-9
Where to Go Next 27-9
Additional References 27-9
Related Documents 27-9
Standards 27-9
MIBs 27-10
RFCs 27-10
Technical Assistance 27-10
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Feature Information for HSRP and VRRP 27-11
CHAPTER
28 Configuring Link Layer Discovery Protocol 28-1
Finding Feature Information 28-1
Contents 28-1
Restrictions for LLDP 28-2
Overview of LLDP 28-2
How to Configure LLDP 28-2
Configuring LLDP 28-2
Verifying LLDP 28-4
Configuration Example for LLDP 28-4
Example: Enabling LLDP Globally 28-4
Example: Configuring Hold Time 28-4
Example: Configuring Delay Time 28-5
Example: Configuring Intervals 28-5
Where to Go Next 28-6
Additional References 28-7
Related Documents 28-7
Standards 28-7
MIBs 28-7
RFCs 28-7
Technical Assistance 28-8
CHAPTER
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Feature Information for LLDP 28-8
29 Configuring Multihop Bidirectional Forwarding Detection 29-1
Finding Feature Information 29-1
Contents 29-1
Restrictions for Multihop BFD 29-2
Information About Multihop BFD 29-2
Overview of Multihop BFD 29-2
How to Configure Multihop BFD 29-2
Configuring Multihop BFD Template 29-2
Configuring a Multihop BFD Map 29-4
Configuration Examples for Multihop BFD 29-4
Example : Configuring Multihop BFD 29-4
Where to Go Next 29-5
Additional References 29-6
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Related Documents 29-6
Standards 29-6
MIBs 29-6
RFCs 29-6
Technical Assistance 29-7
Feature Information for Multihop BFD 29-7
Contents
CHAPTER
30 Bit Error Rate Testing 30-1
Finding Feature Information 30-1
Contents 30-1
Prerequisites 30-1
Restrictions 30-2
Feature Overview 30-2
How to Configure BERT 30-2
Performing BERT on a T1/E1 Line 30-3
Terminating BERT on a T1/E1 Controller 30-3
Verifying BERT on a T1/E1 Controller 30-4
Configuration Examples 30-5
Additional References 30-5
Related Documents 30-6
Standards 30-6
MIBs 30-6
RFCs 30-6
Technical Assistance 30-6
Feature Information for Bit Error Rate Testing 30-6
CHAPTER
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31 Microwave ACM Signaling and EEM Integration 31-1
Finding Feature Information 31-1
Contents 31-1
Prerequisites 31-2
Feature Overview 31-2
Benefits 31-3
How to Configure Microwave ACM Signaling and EEM Integration 31-4
Configuring Connectivity Fault Management 31-4
Configuring EEP Applet Using CLIs 31-7
Prerequisites 31-7
Configuring Event Handler 31-9
Verifying Microwave Microwave ACM Signaling and EEM Integration Configuration 31-10
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Configuration Examples for Microwave ACM Signaling and EEM Integration 31-11
Example: Configuring CFM 31-11
Example: Configuring EEP Applet 31-11
Example: Configuring Event Handler 31-15
Additional References 31-16
Related Documents 31-16
Standards 31-16
MIBs 31-16
RFCs 31-16
Technical Assistance 31-16
Feature Information for Microwave ACM Signaling and EEM Integration 31-17
CHAPTER
32 IPv6 Support on the Cisco ASR 901 Router 32-1
Finding Feature Information 32-1
Contents 32-1
Prerequisites for IPv6 Support on the Cisco ASR 901 Router 32-2
Restrictions for IPv6 Support on the Cisco ASR 901 Router 32-2
Information About IPv6 Support on the Cisco ASR 901 Router 32-2
Benefits 32-3
Overview of IPv6 32-3
IPv6 Address Formats 32-3
IPv6 Addressing and Discovery 32-4
Static Configuration 32-4
Stateless Autoconfiguration 32-5
ICMPv6 32-5
IPv6 Duplicate Address Detection 32-6
IPv6 Neighbor Discovery 32-6
IPv4 and IPv6 Dual-Stack on an Interface 32-6
Routing Protocols 32-7
IS-IS Enhancements for IPv6 32-7
OSPFv3 for IPv6 32-7
Multiprotocol BGP Extensions for IPv6 32-7
Bidirectional Forwarding Detection for IPv6 32-7
QoS for IPv6 32-8
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How to Configure IPv6 Support on the Cisco ASR 901 Router 32-8
Configuring IPv6 Addressing and Enabling IPv6 Routing 32-8
Configuring a Static IPv6 Route 32-10
Enabling Stateless Auto-Configuration 32-11
Implementing IPv6 on VLAN Interfaces 32-12
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Implementing IPv6 Addressing on Loopback Interfaces 32-13
Configuring ICMPv6 Rate Limiting 32-14
Configuring IPv6 Duplicate Address Detection 32-15
Configuring IPv6 Neighbor Discovery 32-16
Configuring IPv6 and IPv4 Dual-Stack on the Same VLAN 32-17
Prerequisites 32-17
Configuring OSPFv3 for IPv6 32-18
Configuring IS-IS for IPv6 32-19
Configuring Multiprotocol-BGP for IPv6 32-21
Configuring BFD for IPv6 32-22
Specifying a Static BFDv6 Neighbor 32-22
Associating an IPv6 Static Route with a BFDv6 Neighbor 32-23
Configuring BFDv6 and OSPFv3 32-25
Prerequisites 32-25
Configuring BFDv6 for BGP 32-26
Implementing QoS for IPv6 32-27
Verifying the Configuration of IPv6 Support on the Cisco ASR 901 Router 32-27
Verifying IPv6 Addressing Routing 32-27
Verifying a Static IPv6 Route 32-28
Verifying a Stateless Auto-Configuration 32-29
Verifying IPv6 Implementation on VLAN Interfaces 32-29
Verifying IPv6 Implementation on Loopback Interfaces 32-30
Verifying ICMPv6 Configuration 32-30
Verifying IPv6 Duplicate Address Detection Configuration 32-32
Verifying IPv6 Neighbor Discovery Configuration 32-33
Verifying IPv6 and IPv4 Dual-Stack Configuration 32-33
Verifying OSPFv3 for IPv6 Configuration 32-34
Verifying IS-IS for IPv6 Configuration 32-35
Verifying Multiprotocol-BGP for IPv6 Configuration 32-35
Verifying BFD for IPv6 Configuration 32-37
Verifying BFDv6 and OSPFv3 Configuration 32-38
Verifying BFDv6 for BGP Configuration 32-39
Contents
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Configuration Examples for IPv6 Support on the Cisco ASR 901 Router 32-39
Example: IPv6 Addressing on VLAN Interfaces 32-40
Example: IPv6 Addressing on Loopback Interfaces 32-40
Example: Customizing ICMPv6 32-40
Example: Configuring IPv6 Duplicate Address Detection 32-40
Example: Configuring IPv6 Neighborhood Discovery 32-41
Example: Enabling IPv6 Stateless Address Autoconfiguration 32-41
Example: Configuring the IPv4 and IPv6 Dual-Stack 32-41
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Example: Configuring IPv6 Static Routing 32-41
Example: Configuring BFD and Static Routing for IPv6 32-42
Example: Configuring OSPFv3 for IPv6 32-42
Example: Configuring BFD and OSPFv3 for IPv6 32-42
Example: Configuring IS-IS for IPv6 32-43
Example: Configuring Multiprotocol-BGP for IPv6 32-44
Example: Configuring BFD and Multiprotocol-BGP for IPv6 32-45
Troubleshooting Tips 32-46
Where to Go Next 32-46
Additional References 32-47
Related Documents 32-47
Standards 32-47
MIBs 32-47
RFCs 32-47
Technical Assistance 32-48
CHAPTER
Feature Information for IPv6 Support on the Cisco ASR 901 Router 32-49
33 Labeled BGP Support 33-1
Finding Feature Information 33-1
Contents 33-1
Prerequisites 33-2
Restrictions 33-2
Overview of Labeled BGP Support 33-2
How to Configure Labeled BGP Support 33-2
Configuration Example for Labeled Support 33-3
Verifying Labeled BGP Support 33-4
Additional References 33-7
Related Documents 33-7
Standards 33-7
MIBs 33-7
RFCs 33-7
Technical Assistance 33-7
Feature Information for Labeled BGP Support 33-8
CHAPTER
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34 MPLS Traffic Engineering - Fast Reroute Link Protection 34-1
Finding Feature Information 34-1
Contents 34-1
Prerequisites 34-2
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Restrictions 34-2
Feature Overview 34-2
BFD-triggered Fast Reroute 34-3
BFD 34-4
Fast Reroute 34-4
Link Protection 34-4
How to Configure Traffic Engineering - Fast Reroute Link Protection 34-4
Enabling MPLS TE-FRR on an SVI Interface 34-5
Enabling MPLS TE-FRR for EoMPLS on a Global Interface 34-5
Enabling MPLS TE-FRR for EoMPLS on an Interface 34-7
Enabling MPLS TE-FRR for IS-IS 34-9
Configuring Primary One-hop Auto-Tunnels 34-11
Configuring Backup Auto-Tunnels 34-13
Enabling Targeted LDP session over Primary one-hop Auto-Tunnels 34-14
Enabling BFD Triggered FRR on an SVI Interface 34-15
Enabling BFD Triggered FRR on a Router 34-16
Contents
Verification Examples 34-17
Verifying MPLS TE-FRR Configuration 34-17
Verifying Primary One-hop Auto-Tunnels 34-19
Verifying Backup Auto-Tunnels 34-19
Verifying BFD Triggered FRR Configuration 34-20
Configuration Examples 34-24
Example: Configuring MPLS TE-FRR 34-24
Example: Configuring Primary One-hop Auto-Tunnels 34-24
Example: Configuring Backup Auto-Tunnels 34-24
Example: Configuring BFD Triggered FRR 34-24
Additional References 34-25
Related Documents 34-25
Standards 34-25
MIBs 34-25
RFCs 34-25
Technical Assistance 34-26
Feature Information for MPLS Traffic Engineering - Fast Reroute Link Protection 34-27
CHAPTER
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35 Layer 2 Control Protocol Peering, Forwarding, and Tunneling 35-1
Finding Feature Information 35-1
Contents 35-1
Prerequisites 35-1
Restrictions 35-2
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Contents
Layer 2 Control Protocol Forwarding 35-2
Layer 2 Control Protocol Tunneling 35-2
How to Configure Layer 2 Control Protocol Peering, Forwarding, and Tunneling 35-3
Configuring Layer 2 Peering 35-4
Restrictions 35-4
Configuring Layer 2 Forwarding 35-5
Restrictions 35-5
Configuring Layer 2 Tunneling 35-7
Restrictions 35-7
Verifying Layer 2 Peering 35-9
Verifying Layer 2 Forwarding 35-9
Verifying Layer 2 Tunneling 35-9
Configuration Examples 35-10
Example: Configuring Layer 2 Peering 35-10
Example: Configuring Layer 2 Forwarding 35-10
Example: Configuring Layer 2 Tunneling 35-11
CHAPTER
Additional References 35-13
Related Documents 35-14
Standards 35-14
MIBs 35-14
RFCs 35-14
Technical Assistance 35-14
Feature Information for Layer 2 Control Protocol Peering, Forwarding, and Tunneling 35-15
36 Configuring Inverse Muliplexing over ATM 36-1
Finding Feature Information 36-1
Contents 36-1
Prerequisites 36-1
Restrictions 36-2
Feature Overview 36-2
How to Configure IMA 36-2
Configuring ATM IMA on T1/E1 Interface 36-3
Configuring ATM IMA over MPLS 36-4
Configuring the T1/E1 Controller 36-4
Configuring an ATM IMA Interface 36-5
Configuring ATM over MPLS Pseudowire Interface 36-6
Configuring a Port Mode Pseudowire 36-7
Configuring an N-to-1 VCC Cell Mode 36-7
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Configuring an N-to-1 vPC Cell Mode 36-8
ATM AAL5 SDU VCC Transport 36-9
Verifying IMA Configurations 36-10
How to Configure ATM Class of Service 36-11
Configuring Constant Bit Rate 36-11
Configuring Unspecified Bit Rate 36-12
Configuring Unspecified Bit Rate Plus 36-13
Configuring Variable Bit Rate for Real/Non-Real Time Traffic 36-14
Configuration Examples 36-15
Example: Creating an IMA Interface 36-15
Example: Configuring a Port Mode Pseudowire 36-15
Example: Configuring an N-to-1 VCC Cell Mode 36-16
Example: Configuring an N-to-1 VPC Cell Mode 36-16
Example: Configuring CBR 36-16
Example: Configuring UBR 36-16
Example: Configuring UBR Plus 36-17
Example: Configuring VBR for Real Time Traffic 36-17
Example: Configuring VBR for Non-Real Time Traffic 36-17
Contents
CHAPTER
Configuring Marking MPLS Experimental Bits 36-17
Creating a Policy-map for PVP/PVC/ATM IMA Interface 36-17
Applying the Policy-map 36-18
Applying a Policy map on PVC and PVP 36-18
Applying a Policy map on ATM IMA Interface 36-20
Creating a Table-map 36-21
Creating a Policy-map for SVI Interface 36-22
Applying a Service Policy on SVI Interface 36-23
Additional References 36-25
Related Documents 36-25
Standards 36-25
MIBs 36-25
RFCs 36-25
Technical Assistance 36-25
Feature Information for Inverse Multiplexing over ATM 36-26
37 IPv6 over MPLS: 6PE and 6VPE 37-1
Finding Feature Information 37-1
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Contents 37-1
Prerequisites 37-2
Restrictions 37-2
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Feature Overview 37-2
Benefits of 6PE and 6VPE 37-3
IPv6 on Provider Edge Routers 37-3
IPv6 on VPN Provider Edge Routers 37-4
Components of MPLS-based 6VPE Network 37-4
Supported Features 37-5
Scalability Numbers 37-6
How to Configure IPv6 over MPLS: 6PE and 6VPE 37-6
Configuring 6PE 37-6
Configuring 6VPE 37-9
Setting up IPv6 Connectivity from PE to CE Routers 37-9
Setting up MP-BGP Peering to the Neighboring PE 37-10
Setting up MPLS/IPv4 Connectivity with LDP 37-12
Creating IPv6 VRFs on PE Routers 37-13
Verifying IPv6 over MPLS: 6PE and 6VPE Configuration 37-15
CHAPTER
Configuration Examples 37-18
Example: Configuring 6PE 37-18
Example: Configuring 6VPE 37-19
Additional References 37-20
Related Documents 37-20
Standards 37-20
MIBs 37-20
RFCs 37-20
Technical Assistance 37-20
Feature Information for IPv6 over MPLS: 6PE and 6VPE 37-21
38 Storm Control 38-1
Finding Feature Information 38-1
Contents 38-1
Prerequisites 38-2
Restrictions 38-2
Feature Overview 38-2
Configuring Storm Control 38-2
Verifying Storm Control 38-4
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Configuring Error Disable Recovery 38-5
Monitoring Error Disable Recovery 38-6
Configuration Example for Storm Control 38-7
Troubleshooting Tips 38-7
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