Cisco Cisco Packet Data Interworking Function (PDIF) Guía De Administador
Cisco ASR 5500 System Administration Guide ▄
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Chapter 20
Session Recovery
With robust hardware failover and redundancy protection, any card-level hardware failures on the system can quickly be
corrected. However, software failures can occur for numerous reasons, often without prior indication.
corrected. However, software failures can occur for numerous reasons, often without prior indication.
This chapter describes the Session Recovery feature that provides seamless failover and reconstruction of subscriber
session information in the event of a hardware or software fault.
session information in the event of a hardware or software fault.
Important:
Session Recovery is a licensed Cisco feature. A separate feature license may be required. 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.
installing and verifying licenses, refer to the Managing License Keys section of Software Management Operations.
This chapter includes the following sections: