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# Managing Interchassis Redundancy for E Series Broadband Services Routers, Release 12.3

Interchassis Redundancy (ICR) enables you to minimize subscriber downtime when the router or access interface on the edge router fails. This page provides information about the ICR feature and also how to configure ICR on E Series routers.

JunosE® Software Documentation for E Series Broadband Services Routers, Release 12.3

- Overview
- Configuration
- Administration
- Troubleshooting

How ICR Works
ICR Overview ICR Terms ICR References ICR Scaling Considerations Interaction with RADIUS for ICR
Hardware Requirements
ICR Platform Considerations

Configuration Overview
Configuring ICR Partitions
Configuration Tasks for ICR
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 Using RADIUS to Manage Subscribers Logging In to ICR Partitions
Examples
Example: Configuring ICR Partitions That Group Subscribers by S-VLAN ID
Configuration Commands
ip vrrp ip vrrp enable ip vrrp icr-partition ip vrrp icr-partition group ip vrrp icr-partition svlan-list ip vrrp icr-partition svlan-list explicit ip vrrp icr-partition svlan-range ip vrrp icr-partition vlan-list ip vrrp icr-partition vlan-range ip vrrp priority ip vrrp timers-learn ip vrrp virtual-address radius icr-partition-accounting radius include

Monitoring ICR
Monitoring the Configuration of ICR Partitions Monitoring the Configuration of an ICR Partition Attached to an Interface Monitoring the Status of ICR Partition Accounting
Monitoring Commands
show icr-partition show icr-partitions show radius icr-partition-accounting

Knowledge Base
http://kb.juniper.net/

## Downloads

- Service Availability Configuration Guide, Release 12.3.0
- Managing Interchassis Redundancy for E Series Broadband Services Routers

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