Cisco Cisco Packet Data Interworking Function (PDIF)
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Interchassis Session Recovery
▀ ICSR Operation
▄ ASR 5500 System Administration Guide, StarOS Release 18
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Important:
ICSR is a licensed Cisco feature. Verify that each chassis has the appropriate license before using
these procedures. To do this, log in to both chassis and execute a show license information command. Look for “Inter-
Chassis Session Recovery”. If the chassis is not licensed, please contact your Cisco account representative.
Chassis Session Recovery”. If the chassis is not licensed, please contact your Cisco account representative.
The following figure shows an ICSR network.
Figure 21. ASR 5500 ICSR Network
ICSR Operation
This section shows operational flows for ICSR.
The following figure shows an ICSR process flow due to a primary failure.