для Cisco Cisco ASR 5700
APN Configuration Mode Commands
▀ gtpp group
▄ Command Line Interface Reference, StarOS Release 17
1348
accounting-context
ac_context_name
Specifies the name of an accounting context on the system that processes accounting for PDP contexts
handled by this GGSN service for accounting to specific APN.
handled by this GGSN service for accounting to specific APN.
ac_context_name
must be an alphanumeric string of 1 through 79 characters that is case sensitive.
Note that if an accounting context is not specified here, the system uses the GGSN service context or the
context configured by the
context configured by the
accounting context
command in the GGSN Service Configuration mode.
Usage
This feature provides the GTPP server configurables under a GTPP group node. Instead of having a single list
of servers per context, this feature configures multiple server groups within a context and applies individual
an GTPP server group for subscribers in that context. Each server group consists of a list of CGF (Charging
Group Function) accounting servers.
In case no GTPP group is applied for the said APN or default APN template, then the default GTPP server
group available at the context level is applicable for accounting of a specific APN.
of servers per context, this feature configures multiple server groups within a context and applies individual
an GTPP server group for subscribers in that context. Each server group consists of a list of CGF (Charging
Group Function) accounting servers.
In case no GTPP group is applied for the said APN or default APN template, then the default GTPP server
group available at the context level is applicable for accounting of a specific APN.
Important:
When multiple GTPP groups are applied to the same APN, the load will be shared across these
GTPP groups. Sessions for this APN will use all the configured GTPP groups in a round robin fashion.
Once a GTPP group is selected for a subscriber session, the GTPP group will never change under any
circumstances. A request is initially sent to primary CGF server configured in that group. When the primary
fails to respond, the request is sent to secondary CGF server.
The process of failover from primary to secondary is per the 3GPP standards. Multiple GTPP groups
configuration is actually supported only for load sharing of sessions within an APN and not used for failover.
When all CGFs are down in a GTPP group, the requests are archived either in hard disk or main memory
depending on whether or not streaming is enabled.
The AAA proxy allocates a lot of memory on a per GTPP group basis statically regardless of the usage. So if
the number of GTPP groups is reduced to around 3 then the issue with the AAA proxy going to warn memory
state will not be observed.
In releases prior to 16.0, up to a maximum of 32 GTPP groups were allowed to be configured per APN. In
16.0 and later releases, there is a limit of configuring only up to six GTPP groups per APN. In case customers
are using more than six GTPP groups, the AAAProxy will use more memory than is supported and will be in
“warn” state of memory. With the reduction in the number of GTPP groups configured, there will no CDR
loss due to AAA proxy kill as CDRs are archived in AAA manager when AAA proxy goes to warn state.
circumstances. A request is initially sent to primary CGF server configured in that group. When the primary
fails to respond, the request is sent to secondary CGF server.
The process of failover from primary to secondary is per the 3GPP standards. Multiple GTPP groups
configuration is actually supported only for load sharing of sessions within an APN and not used for failover.
When all CGFs are down in a GTPP group, the requests are archived either in hard disk or main memory
depending on whether or not streaming is enabled.
The AAA proxy allocates a lot of memory on a per GTPP group basis statically regardless of the usage. So if
the number of GTPP groups is reduced to around 3 then the issue with the AAA proxy going to warn memory
state will not be observed.
In releases prior to 16.0, up to a maximum of 32 GTPP groups were allowed to be configured per APN. In
16.0 and later releases, there is a limit of configuring only up to six GTPP groups per APN. In case customers
are using more than six GTPP groups, the AAAProxy will use more memory than is supported and will be in
“warn” state of memory. With the reduction in the number of GTPP groups configured, there will no CDR
loss due to AAA proxy kill as CDRs are archived in AAA manager when AAA proxy goes to warn state.
Example
The following command applies a previously configured GTPP server group named
star1
to an APN within
the specific context:
gtpp group star1
The following command disables the applied GTPP server group for the specific APN:
no gtpp group star1