Juniper SERVICE AVAILABILITY - CONFIGURATION GUIDE V 11.1.X Configuration Manual page 10

JUNOSe 11.1.x Service Availability Configuration Guide
Chapter 3
Chapter 4
x
Table of Contents
Managing SRP Module Redundancy ........................................................16
Switching to the Redundant SRP Module ................................................18
Upgrading Software on a Redundant SRP Module ...................................19
Monitoring the Status LEDs .....................................................................19
Monitoring Line Module and SRP Module Redundancy .................................19
Managing Port Redundancy ..........................................................................23
Managing Stateful SRP Switchover
Stateful SRP Switchover Overview .................................................................25
Stateful SRP Switchover Platform Considerations ..........................................26
Module Requirements .............................................................................26
Stateful SRP Switchover Redundancy Modes .................................................27
File System Synchronization Mode .........................................................27
High Availability Mode ............................................................................27
Stateful SRP Switchover States ......................................................................29
Disabled State .........................................................................................29
Initializing State ......................................................................................30
Active State .............................................................................................30
Pending State ..........................................................................................31
Application Support for Stateful SRP Switchover ...........................................32
Application Support ................................................................................32
Guidelines for Activating High Availability .....................................................41
Activating High Availability ............................................................................42
Guidelines for Deactivating High Availability .................................................42
Deactivating High Availability ........................................................................43
Guidelines for Setting the IP Interface Priority ...............................................43
Setting the IP Interface Priority .....................................................................44
Guidelines for Upgrading Software ................................................................44
Monitoring the Redundancy Status ................................................................45
Monitoring the Redundancy Status of Applications ........................................48
Monitoring the Redundancy History ..............................................................50
Monitoring the Redundancy Status of Line Modules ......................................51
Monitoring the Redundancy Status of SRP Modules ......................................52
Monitoring the Redundancy Switchover History ............................................54
Clearing the Redundancy History ..................................................................55
Configuring a Unified In-Service Software Upgrade
Unified ISSU Overview ..................................................................................58
Router Behavior During a Unified In-Service Software Upgrade ..............59
Unified ISSU Platform Considerations ...........................................................59
Hardware and Software Requirements Before Beginning a Unified ISSU .......60
Hardware Requirements for Unified ISSU ......................................................60
Software Requirements for Unified ISSU .......................................................61
Unified ISSU Terms .......................................................................................62
Unified ISSU References ................................................................................62
Unified ISSU Phases Overview ......................................................................63
25
57