During back-to-back ICSR
switchovers there are instances where a number of subscribers lose the assigned
dynamic charging rules. In such cases traffic starts hitting static catchall
rules, which not be charged. To track this loss, an SNMP trap is sent when
traffic hit these rules. This timely tracking ensures accurate charging.
To ensure that there is no loss of dynamic charging rules, new CLIs
are introduced to configure the threshold value, volume monitoring duration,
and enable threshold volume for total-volume.
The threshold can be configured for a combination of rulebase and
ruledef or rulebase and group-of-ruledef. This threshold is monitored across
all subscribers of the system. The SNMP trap is generated when traffic reaches
configured threshold value with severity information.
The SNMP trap contains information about the rulebase-name,
ruledef-name or group-of-ruledef name, and volume in bytes.
Following are the
configuration and restrictions that are applicable to this feature:
configurations are applicable only for static ruledefs and static
P-GW and GGSN
service name is not included in the trap information.
There is no
support for Session Recovery and ICSR. These per rulebase per ruledef data
statistics are not check-pointed during session recovery and switchover.
There is a
single trap per rulebase and ruledef configuration per system. The SNMP trap is
not per subscriber.
can configure a maximum of 30 rulebase and ruledefs/group-of-ruledefs to
monitor volume thresholds.
group-of-ruledef, and Rulebase for which threshold monitoring is enabled should
be configured in active-charging service configuration. Else trap is not be
generated for these.
Threshold value for total-volume is configured in bytes. The
total-volume data sent towards THE external server for a particular monitoring
interval is reported in kilobytes.
As measured data forwarded to the external server is always in
kilobytes, data measured in range of 1 to 999 bytes is rounded off to 1
kilobyte. Actual measured data in such cases can be checked using the
show snmp trap history command.
SNMP Trap support for Ruledef and Rulebase Feature
The following section provides the
configuration commands in support of this feature.