Interchassis Session Recovery; Overview; Interchassis Communication - Cisco ASR 5500 System Administration Manual

Interchassis Session Recovery

This chapter describes how to configure Interchassis Session Recovery (ICSR). The product Administration
Guides provide examples and procedures for configuration of basic services on the system. You should select
the configuration example that best meets your service model, and configure the required elements for that
model as described in the respective product Administration Guide, before using the procedures described
below.
Important
This chapter discusses the following:
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Overview

Interchassis Communication

In situations where the SRP link goes out of service, a priority scheme is used to determine which chassis
processes the session. The following priority scheme is used:
• route modifier
• chassis priority
• MIO/UMIO/MIO2 MAC address
ICSR is a licensed Cisco feature that requires a separate license. Contact your Cisco account representative
for detailed information on specific licensing requirements. For information on installing and verifying
licenses, refer to the Managing License Keys section of Software Management Operations.
Overview, page 267
ICSR Operation, page 271
Configuring ICSR, page 271
Troubleshooting ICSR Operation, page 286
Updating the Operating System, page 287
C H A P T E R
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