Cisco Cisco Packet Data Gateway (PDG)
GTPP Changes in Release 16
▀ GTPP Enhancements for 16.0
▄ Release Change Reference, StarOS Release 16
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With this release, SaMOG supports generation of CDR files for offline charging. In Offline Charging, charging
information is collected concurrently with resource usage. The charging information is then passed through a chain of
logical charging functions, and the CDR files are generated by the network, which are then transferred to the network
operator's Billing Domain.
information is collected concurrently with resource usage. The charging information is then passed through a chain of
logical charging functions, and the CDR files are generated by the network, which are then transferred to the network
operator's Billing Domain.
As 3GPP specifications does not define a CDR format for SaMOG, the S-GW CDR and SGSN CDR record formats are
used to define the CDR format for SaMOG 4G/3G subscribers. The record format can be selected using a CLI command
under the GTPP Group Configuration Mode. By default, for an SaMOG license, the S-GW record type is used, and for
an SaMOG 3G license, the SGSN record type is used.
used to define the CDR format for SaMOG 4G/3G subscribers. The record format can be selected using a CLI command
under the GTPP Group Configuration Mode. By default, for an SaMOG license, the S-GW record type is used, and for
an SaMOG 3G license, the SGSN record type is used.
CSCuh13699 - CDR LIFO
Applicable Products: GGSN, P-GW, SAEGW, SGSN, S-GW
Feature Changes
New CDR Streaming Mode
This feature introduces a new CDR streaming mode, wherein the newly generated CDRs from AAA Managers are sent
to CGF server along with the streamed CDRs from hard disk.
to CGF server along with the streamed CDRs from hard disk.
With streaming mode enabled, CDRs are written to HDD when the OCG connectivity is down. Once the OCG
connectivity is up, the HDD contents are sent in a First-In-First-Out (FIFO) order. New records should be written to disk
as long as all contents from disk are not fully flushed. If the disk is completely flushed, the records can be sent to OCG
directly.
connectivity is up, the HDD contents are sent in a First-In-First-Out (FIFO) order. New records should be written to disk
as long as all contents from disk are not fully flushed. If the disk is completely flushed, the records can be sent to OCG
directly.
With parallel mode, this behavior is changed to send new CDRs directly to CGF when streaming from HDD is in
progress.
progress.
The existing CLI command, to set the streaming mode, is extended. The “parallel” keyword enables the new parallel
streaming mode.
streaming mode.
Previous Behavior: In the old FIFO mode, when the CGF becomes active, all CDRs in HDD are streamed in a First-
In-First-Out order. Any new CDR generated during the streaming (i.e. till all CDRs are flushed from HDD) will be
written to HDD and from there sent to CGF.
In-First-Out order. Any new CDR generated during the streaming (i.e. till all CDRs are flushed from HDD) will be
written to HDD and from there sent to CGF.
In the current implementation, during streaming, GTPP requests are read from HDD and sent to CGF server, till
configured max outstanding is reached.
configured max outstanding is reached.
New Behavior: In the new “PARALLEL” mode introduced, when the CGF becomes active, CDRs in HDD are
streamed at a slower pace. Newly generated CDRs from AAA Managers are sent directly to CGF servers when
streaming is in progress. In PARALLEL mode, rate of streaming from HDD will be slow.
streamed at a slower pace. Newly generated CDRs from AAA Managers are sent directly to CGF servers when
streaming is in progress. In PARALLEL mode, rate of streaming from HDD will be slow.
Billing domain should be capable of handling Out-Of-Order CDRs in parallel streaming mode.
Command Changes
gtpp attribute
The existing streaming CLI is extended to add a new mode of streaming “parallel”.
configure
context context_name