Cisco Cisco Packet Data Interworking Function (PDIF)
GTPP Accounting Overview
Path Protocol ▀
GTPP Interface Administration and Reference, StarOS Release 18 ▄
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Path Protocol
GTPP uses path protocol to transport CDRs from CDF to CGF over the Ga interface so as to facilitate charging.
The following path protocols are supported for GTPP:
UDP as the Path Protocol
Ports for signaling the request messages:
The UDP Destination Port may be the server port number 3386 which has been reserved for GTPP.
Alternatively, another port can be used as configured by O&M.
The UDP Source Port is a locally allocated port number at the sending network element.
Ports for signaling the response messages:
The UDP Destination Port can be the value of the Source Port of the corresponding request message.
The UDP Source Port can be the value from the Destination Port of the corresponding request message.
TCP as the Path Protocol
The TCP Destination Port may be the server port number 3386, which has been reserved for G-PDUs.
Alternatively, another port may be used as configured by O&M. Extra implementation-specific destination
ports are possible but all CGFs shall support the server port number.
Alternatively, another port may be used as configured by O&M. Extra implementation-specific destination
ports are possible but all CGFs shall support the server port number.
The TCP Source Port is a random port locally assigned at the sending network element.
Important:
ASR chassis supports IPV4 only as a transport layer IP.