Gx Interface Support
▀ Rel. 8 Gx Interface
▄ Cisco ASR 5x00 Packet Data Network Gateway Administration Guide
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otherwise, if the Charging-Rule-Report AVP was included in an RAA command, the PCEF sends a new CCR
command to report accumulated usage for the usage monitoring key. In 12.0 and later releases, usage reporting
on last rule deactivation using rule deactivation time set by PCRF is supported.
Releases prior to 14.0, when PCC rule was tried to be removed while waiting for access side update bearer
response, the charging rules were not removed. In 14.0 and later releases, on receiving message from PCRF,
the rule that is meant for removal is marked and then after the access side procedure is complete the rule is
removed.
PCRF Requested Usage Report: In 10.2 and later releases, the accumulated usage since the last report is sent
even in case of immediate reporting, the usage is reset after immediate reporting and usage monitoring
continued so that the subsequent usage report will have the usage since the current report. In earlier releases the
behavior was to accumulate the so far usage in the next report.
Release 12.2 onwards, usage reporting on bearer termination can be added. When a bearer is deleted due to some
reason, the rules associated with the bearer will also be removed. So, the usage will be reported on the
monitoring key(s) whose associated rule is the last one that is removed because of bearer termination.
Revalidation Timeout: In the non-standard implementation, if usage monitoring and reporting is enabled and a
revalidation timeout occurs, the PCEF sends a CCR to request PCC rules and reports all accumulated usage for
all enabled monitoring keys since the last report (or since usage reporting was enabled if the usage was not yet
reported) with the accumulated usage at IP-CAN session level (if enabled) and at service data flow level (if
enabled) This is the default behavior.
In the case of standard implementation, this must be enabled by CLI configuration.
Important:
The Usage Reporting on Revalidation Timeout feature is available by default in non-standard
implementation of Volume Reporting over Gx. In 10.2 and later releases, this is configurable in the standard
implementation. This is not supported in 10.0 release for standard based volume reporting.
Once the usage is reported, the usage counter is reset to zero. The PCEF continues to track data usage from the zero
value after the threshold is reached and before a new threshold is provided by the PCRF. If a new usage threshold is not
provided by the PCRF in the acknowledgement of an IP-CAN Session modification where its usage was reported, then
usage monitoring does not continue in the PCEF for that IP CAN session and and the usage accumulated between the
CCR-CCA will be discarded.
For information on how to configure the Volume Reporting over Gx feature, see the
Configuring Volume Reporting
over Gx
section.