Cisco Cisco Packet Data Gateway (PDG) Fehlerbehebungsanleitung
Cisco ASR 5000 Series Enhanced Feature Configuration Guide ▄
OL-22982-01
Chapter 28
PDIF Session Recovery
In the telecommunications industry, over 90 percent of all equipment failures are software-related. 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, many times without prior indication. For this reason, we
have introduced a new solution to recover subscriber sessions in the event of failure.
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, many times without prior indication. For this reason, we
have introduced a new solution to recover subscriber sessions in the event of failure.
The Session Recovery feature provides seamless failover and reconstruction of subscriber session information in the
event of a hardware or software fault within the system preventing a fully connected user session from being
disconnected.
event of a hardware or software fault within the system preventing a fully connected user session from being
disconnected.
The PDIF supports a session recovery procedure wherein the system can be configured to store redundant call state
information and recover this information after certain types of hardware and software failures.
information and recover this information after certain types of hardware and software failures.
Important:
Session Recovery can only be enabled through a feature use license key. If you have not previously
purchased this enhanced feature, contact your sales representative for more information.
The session recovery feature, even when the feature use key is present, is disabled by default on the system.
This chapter provides information on the following topics: