Cisco Cisco Packet Data Interworking Function (PDIF)
GTPP Interface Configuration
▀ Configuring the GPRS Tunneling Protocol
▄ GTPP Interface Administration and Reference, StarOS Release 17
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Configuring the GPRS Tunneling Protocol
Cisco Systems’ GGSN/P-GW/S-GW supports both GTPP- and RADIUS-based accounting. The accounting protocol is
configured on a per-APN basis.
configured on a per-APN basis.
When the GTPP protocol is used, accounting messages are sent to the Charging Gateways (CGs) over the Ga interface.
The Ga interface and GTPP functionality are typically configured within the system's source context. As specified by
the standards, a CDR is not generated when a session starts. CDRs are generated according to the interim triggers
configured using the charging characteristics configured for the GGSN, and a CDR is generated when the session ends.
For interim accounting, STOP/START pairs are sent based on configured triggers.
The Ga interface and GTPP functionality are typically configured within the system's source context. As specified by
the standards, a CDR is not generated when a session starts. CDRs are generated according to the interim triggers
configured using the charging characteristics configured for the GGSN, and a CDR is generated when the session ends.
For interim accounting, STOP/START pairs are sent based on configured triggers.
GTPP version 2 is always used. However, if version 2 is not supported by the Charging Gateway Function (CGF), the
system reverts to using GTPP version 1. All subsequent CDRs are always fully-qualified partial CDRs. GTPP version 0
is not supported.
system reverts to using GTPP version 1. All subsequent CDRs are always fully-qualified partial CDRs. GTPP version 0
is not supported.
GTPP is configured at the routing context level. Some of the configurables associated with GTPP are Attributes,
Charging Agent, Deadtime, etc. The GTPP configuration commands vary according to the services configured, for
example, the commands used for GGSN might differ from what is configured for P-GW. For more information on the
configuration commands, refer to the Command Line Interface Reference.
Charging Agent, Deadtime, etc. The GTPP configuration commands vary according to the services configured, for
example, the commands used for GGSN might differ from what is configured for P-GW. For more information on the
configuration commands, refer to the Command Line Interface Reference.
This section provides the GTPP configuration applied to various products.
Important:
Commands used in the configuration examples in this section provide base functionality to the extent
that the most common or likely commands and/or keyword options are presented. In many cases, other optional
commands and/or keyword options are available. Refer to the Command Line Interface Reference for complete
information regarding all commands.
commands and/or keyword options are available. Refer to the Command Line Interface Reference for complete
information regarding all commands.
Configuring GTPP for GGSN/P-GW
This section provides the GTPP configuration for GGSN and P-GW.
1. Configure the GTPP group and accounting context configuration in APN level and also specify the accounting
mode.
configure
context source
apn apnname1.com
accounting-mode gtpp
gtpp group group1 accounting-context billing
end
Important:
To generate only an eG-CDR, the
accounting-mode
command in the APN
Configuration mode must be configured with the
none
option.
2. Configure the GTPP group related parameters like GTPP server parameters, GTPP dictionary, and optionally
CGF to support GTPP accounting: