Managing Module Redundancy

This chapter describes how to manage redundancy (stateless switchover) in line modules, switch route processor (SRP) modules, switch fabric modules (SFMs), I/O modules, and I/O adapters (IOAs) in E Series routers.

This chapter contains the following sections:

• Line Module Redundancy Overview
• Line Module Redundancy Requirements
• Understanding Automatic Switchover
• Understanding Reversion After Switchover
• Configuring Line Module Redundancy
• Managing Line Module Redundancy
• Example: Forcing the Router to Switch from Primary Line Module to Spare Line Module
• Interoperation of Redundancy and Stateful Switchover for Line Modules
• Understanding SRP Module Redundancy
• Understanding Configuration of SRP Modules for Redundancy
• Installing a Redundant SRP Module
• Managing SRP Module Redundancy
• Switching to the Redundant SRP Module
• Determination of Redundancy Status for Line Modules and SRP Modules Using Status LEDs
• Monitoring Redundancy in Installed Hardware
• Monitoring Redundancy in Line Module and SRP Modules
• Monitoring Redundancy Status on E320 Router