Managing Stateful Srp Switchover; Stateful Srp Switchover Overview - Juniper SERVICE AVAILABILITY - CONFIGURATION GUIDE V 11.1.X Configuration Manual

Chapter 3

Managing Stateful SRP Switchover

Stateful SRP Switchover Overview

This chapter describes how to manage Juniper Networks Stateful SRP Switchover
(also referred to as high availability or HA) software features for the E Series router.
Use this chapter with "Managing Module Redundancy" on page 7 to fully manage
the SRP features.
This chapter contains the following sections:
Stateful SRP Switchover Overview on page 25
Stateful SRP Switchover Platform Considerations on page 26
Stateful SRP Switchover Redundancy Modes on page 27
Stateful SRP Switchover States on page 29
Application Support for Stateful SRP Switchover on page 32
Guidelines for Activating High Availability on page 41
Activating High Availability on page 42
Guidelines for Deactivating High Availability on page 42
Deactivating High Availability on page 43
Guidelines for Setting the IP Interface Priority on page 43
Setting the IP Interface Priority on page 44
Guidelines for Upgrading Software on page 44
Monitoring the Redundancy Status on page 45
Monitoring the Redundancy Status of Applications on page 48
Monitoring the Redundancy History on page 50
Monitoring the Redundancy Status of Line Modules on page 51
Monitoring the Redundancy Status of SRP Modules on page 52
Monitoring the Redundancy Switchover History on page 54
Clearing the Redundancy History on page 55
Stateful SRP switchover is the idea of reducing or eliminating single points of failure.
When applied to the E Series router, stateful SRP switchover provides both
hardware-specific and software-specific methods to ensure minimal downtime and
ultimately improve the performance of your network.
Stateful SRP Switchover Overview
25