Cisco Cisco Packet Data Gateway (PDG)
GTPP Accounting Overview
▀ GTPP Messages
▄ GTPP Interface Administration and Reference, StarOS Release 16
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The optional Private Extension contains vendor- or operator-specific information.
Data Record Transfer Request
This message is used to transmit the CDR(s) to the CGF.
The CDRs are placed in the Data Record Packet information element.
Information Elements in Data Record Transfer Request
The IEs in Data Record Transfer Request message are specified in the following table.
Table 7. Data Record Transfer Request Message
Information Element
Presence Requirement
Packet Transfer Command
Mandatory
Data Record Packet
Conditional
Sequence Numbers of Released Packets Conditional
Sequence Numbers of Canceled Packets Conditional
Private Extension
Optional
Packet Transfer Command IE
The value of the Packet Transfer Command in its Information Element tells the nature of the message:
1 = 'Send Data Record Packet'
2 = 'Send possibly duplicated Data Record Packet'
3 = 'Cancel Data Record Packet'
4 = 'Release Data Record Packet'
The following describes the usage of each Packet Transfer Command. The first command is for normal CDR transfer
while the other values are only used as part of the redundancy mechanism.The following describes the usage of each
Packet Transfer Command. The first command is for normal CDR transfer while the other values are only used as part
of the redundancy mechanism.
while the other values are only used as part of the redundancy mechanism.The following describes the usage of each
Packet Transfer Command. The first command is for normal CDR transfer while the other values are only used as part
of the redundancy mechanism.
Send Data Record Packet: This is the usual command used for sending CDRs under normal conditions when no error
recovery is needed or the redirection mechanism is not involved. The other three commands are being used only in error
recovery cases. Out of the three conditional IEs, only the “Data Record Packet” is present in this message.
recovery is needed or the redirection mechanism is not involved. The other three commands are being used only in error
recovery cases. Out of the three conditional IEs, only the “Data Record Packet” is present in this message.
Send possibly duplicated Data Record Packet: When the CDR packet is redirected to a secondary CGF (by a CDF)
because the currently used CGF is not working or the CDR transfer is not working properly, or if there is an error in the
link between the CDF and the CGF, then this Packet Transfer Command is used instead of the normal 'Send Data
Record Packet'. Of the conditional IEs, the “Data Record Packet” is present in the message, when sending the message
to a CGF acting as temporary storage, when the original primary CGF could not be contacted. This Packet Transfer
Command is used also when sending “empty” test packets with older (but not yet acknowledged) sequence numbers
because the currently used CGF is not working or the CDR transfer is not working properly, or if there is an error in the
link between the CDF and the CGF, then this Packet Transfer Command is used instead of the normal 'Send Data
Record Packet'. Of the conditional IEs, the “Data Record Packet” is present in the message, when sending the message
to a CGF acting as temporary storage, when the original primary CGF could not be contacted. This Packet Transfer
Command is used also when sending “empty” test packets with older (but not yet acknowledged) sequence numbers