# Managing Interchassis Redundancy

This chapter describes how to configure interchassis redundancy (ICR) on your E Series router.

- ICR Overview
- ICR Platform Considerations
- ICR Terms
- ICR References
- ICR Scaling Considerations
- Interaction with RADIUS for ICR
- Configuring ICR Partitions
- Configuring the Interface on Which ICR Partitions Reside
- Configuring VRRP Instances to Match ICR Requirements
- Naming ICR Partitions
- Grouping ICR Subscribers Based on S-VLAN IDs
- Grouping ICR Subscribers Based on VLAN IDs
- Example: Configuring ICR Partitions That Group Subscribers by S-VLAN ID
- Using RADIUS to Manage Subscribers Logging In to ICR Partitions
- Monitoring the Configuration of an ICR Partition Attached to an Interface
- Monitoring the Configuration of ICR Partitions