Juniper SERVICE AVAILABILITY - CONFIGURATION GUIDE V 11.1.X Configuration Manual page 9

Table of Contents
Part 1
Chapter 1
Chapter 2
About the Documentation
E Series and JUNOSe Documentation and Release Notes ..............................xix
Audience ......................................................................................................xix
E Series and JUNOSe Text and Syntax Conventions .....................................xix
Obtaining Documentation ............................................................................xxi
Documentation Feedback .............................................................................xxi
Requesting Technical Support ......................................................................xxi
Self-Help Online Tools and Resources ...................................................xxii
Opening a Case with JTAC .....................................................................xxii
Chapters
Service Availability
Service Availability Overview ..........................................................................3
Service Availability Versus High Availability ..............................................4
Understanding Service Availability Features ....................................................5
Module Redundancy .................................................................................5
Stateful SRP Switchover ............................................................................5
Unified ISSU ..............................................................................................5
VRRP ........................................................................................................6
Interchassis Redundancy ..........................................................................6
Managing Module Redundancy
Line Module Redundancy Overview ................................................................7
Module Requirements ...............................................................................7
ERX7xx Models and ERX14xx Models ................................................7
E120 and E320 Routers ......................................................................8
Automatic Switchover ...............................................................................9
Limitations of Automatic Switchover ..................................................9
Reversion After Switchover .......................................................................9
Configuring Line Module Redundancy ....................................................10
Managing Line Module Redundancy .......................................................10
SRP Module Redundancy ........................................................................11
SRP Module Behavior ..............................................................................11
Specifying the Configuration for Redundant SRP Modules ......................14
Installing a Redundant SRP Module ........................................................15
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Table of Contents