Cisco ASR 920 series Configuration Guide

Resetting Ports 43
Configuration Examples 44
Example: Configuring UDLD Protocol 44
Verifying UDLD Protocol 44
Example: Verifying UDLD Protocol 44
CHAPTER 4 ITU-T G.8032 Ethernet Ring Protection Switching 47
Prerequisites for Configuring ITU-T G.8032 Ethernet Ring Protection Switching 47
About ITU-T G.8032 Ethernet Ring Protection Switching 47
Ring Protection Links 47
ITU-T G.8032 Ethernet Ring Protection Switching Functionality 48
R-APS Control Messages 48
CFM Protocols and Link Failures 49
G.8032 Ring-Supported Commands and Functionality 49
G.8032 ERP Timers 50
Protection Switching Functionality in a Single Link Failure and Recovery 51
Ethernet Flow Points 53
Service Instances and Associated EFPs 54
Restrictions for Configuring ITU-T G.8032 Ethernet Ring Protection Switching 55
How to Configure ITU-T G.8032 Ethernet Ring Protection Switching 55
Configuring the Ethernet Ring Profile 55
Configuring Ethernet CFM MEPs 56
Enabling Ethernet Fault Detection for a Service 57
Configuring the Ethernet Protection Ring 59
Configuring Topology Change Notification Propagation 62
Configuring a Service Instance 63
Verifying the Ethernet Ring Protection (ERP) Switching Configuration 64
Configuration Examples for ITU-T G.8032 Ethernet Ring Protection Switching 67
Example: Configuring Ethernet Ring Protection Switching 67
Example: Enabling Ethernet Fault Detection for a Service 67
Example: Verifying the Ethernet Ring Protection Configuration 68
CHAPTER 5 Multiple Spanning Tree Protocol 69
Restrictions for configuring MSTP 69
How to Configure MST Protocol 69
LAN Switching Configuration Guide Cisco IOS XE Everest 16.5.1 (Cisco ASR 900 Series)
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Contents

Cisco ASR 920 series Specifications

General

Form Factor	1RU
Operating System	Cisco IOS XE
Model	ASR 920 series
Memory	4 GB DRAM
Power Supply	AC or DC
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Relative Humidity	5% to 95% non-condensing
MTBF	Varies by model
Management	CLI, SNMP