для Cisco Cisco Packet Data Gateway (PDG)
ECS Changes in Release 17
▀ ECS Enhancements for 17.0
▄ Release Change Reference, StarOS Release 17
142
The CLI
fair-usage session-waiver-percent
under
rulebase
has been deprecated.
CSCui88377 - Removal of Rule-deactivation-time not working
Applicable Products: GGSN, P-GW
Feature Changes
Gx Activation/Deactivation Time for Predefined Rules
Previous Behavior: If “Rule-Deactivation-Time” AVP for a predefined rule was omitted in a CCA-U or RAR
message, then any previous value for this AVP was continued to be used in the chassis.
message, then any previous value for this AVP was continued to be used in the chassis.
New Behavior: If Rule-Deactivation-Time AVP for a predefined rule is omitted in a CCA or RAR, then any previous
value for this AVP is no longer valid. The new behavior is compliant to the 3GPP specification for Gx, version 12.1.0.
value for this AVP is no longer valid. The new behavior is compliant to the 3GPP specification for Gx, version 12.1.0.
For switching to the old behavior, PCRF should re-send the same value of Rule-Deactivation-Time AVP along with
predef-rule name in the PCRF message (RAR, CCA-U).
predef-rule name in the PCRF message (RAR, CCA-U).
Important:
This behavior change is applicable only to predefined rules.
Customer Impact: If PCRF enables the same predefined rule again in RAR/CCA-U without Rule-Deactivation-Time
AVP, then the deactivation-time for this rule, if any, will be removed.
AVP, then the deactivation-time for this rule, if any, will be removed.
CSCuj14841, CSCum33077 - Flow Aware Packet Acceleration (FAPA)
Applicable Products: GGSN, P-GW, PDSN, SGW
Feature Changes
Flow Aware Packet Acceleration (FAPA)
Accelerated ECS Packet feature will be supported when TRM FastPath is enabled on the Rulebase.
The Flow Aware Packet Acceleration feature improves the throughput in terms of PPS, by caching rule matching results
of a flow for selected flows so as not to incur the lookup penalty for a large number of packets in that flow. This new
accelerated path is capable of performing a full range of basic functions including handling charging, modification of
packet headers and incrementing various counters. The accelerated path dynamically evaluates the current flow state
and reverts back to the slow path when the flow cannot be handled on the fast path.
of a flow for selected flows so as not to incur the lookup penalty for a large number of packets in that flow. This new
accelerated path is capable of performing a full range of basic functions including handling charging, modification of
packet headers and incrementing various counters. The accelerated path dynamically evaluates the current flow state
and reverts back to the slow path when the flow cannot be handled on the fast path.
The acceleration is applied to specific flows without affecting any external interfaces related to Billing, CLI, interfaces,
and so on. This feature is an extension of the TRM/FastPath that was introduced in R15.0 for ASR5500 platform. TRM
FastPath works on approximately 50-65% of all packets, including VoLTE, Encrypted and HTTP, in the system today
for any given call model, with the control path left intact. New changes are in the data path after TRM has cached the
rule matching results. Accelerated ECS packet path can efficiently process 50+% of data packets in the system, yielding
a significant performance gain on ECS data path.
and so on. This feature is an extension of the TRM/FastPath that was introduced in R15.0 for ASR5500 platform. TRM
FastPath works on approximately 50-65% of all packets, including VoLTE, Encrypted and HTTP, in the system today
for any given call model, with the control path left intact. New changes are in the data path after TRM has cached the
rule matching results. Accelerated ECS packet path can efficiently process 50+% of data packets in the system, yielding
a significant performance gain on ECS data path.
TRM/FP support has been extended beyond rule-matching. Qualifying packets avoid much of the ECS stack for N bytes
of volume for a given flow. Only the packets requiring minimal work are qualified for the accelerated path. The work
of volume for a given flow. Only the packets requiring minimal work are qualified for the accelerated path. The work