Cisco Cisco Packet Data Gateway (PDG)
HDD Storage
▀ Deployment Scenarios
▄ GTPP Interface Administration and Reference, StarOS Release 16
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Deployment Scenarios
The HDD functionality is enabled in the ASR 5x00 gateway in the following deployment scenarios:
CGF configured but not reachable: The ASR 5x00 attempts to stream the CDRs to the configured CGF. If the
CGF does not respond to queries from ASR 5x00 or GTP messages, CDRs are stored in the internal HDD for
future retransmission when CGF becomes reachable again
future retransmission when CGF becomes reachable again
CGF configured and active, then goes down: The ASR 5x00 was sending CDRs to CGF (via GTPP) normally.
Upon loss of reachability of the CGF, the ASR 5x00 determines that CGF is down and starts storing CDRs in
its internal HDD.
its internal HDD.
CGF configured, goes down and later becomes available: CDRs were sent (streamed) to CGF until it
becomes unreachable. After ASR 5x00 determines CGF is down/unreachable, it starts storing CDRs in internal
HDD. When CGF becomes available again, CDRs are streamed to CGF, starting from the older CDR first.
HDD. When CGF becomes available again, CDRs are streamed to CGF, starting from the older CDR first.