для Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 16
▀ SGSN Enhancements for 16.0
▄ Release Change Reference, StarOS Release 16
498
CSCtz55422 - SGSN should start dns query for default SGSN when nri based
query fails / Fallback to RAI based query when NRI based query fails
Feature Changes
SGSN Support for RAI Based Query
Previous Behavior: A DNS query with NRI is performed for ISRAU, Identification and Suspend Requests. Failure of
the NRI based DNS query results in failure of the ISRAU, Identification and Suspend Requests. The SGSN does not a
support a RAI based query when NRI based query fails.
the NRI based DNS query results in failure of the ISRAU, Identification and Suspend Requests. The SGSN does not a
support a RAI based query when NRI based query fails.
New Behavior: A new CLI option
rai-fqdn-fallback
is provided in the
peer-nri-length
CLI under the Call
Control Profile Configuration, which allows the operator to configure the SGSN's support to fallback on RAI based
query when NRI based query fails.
query when NRI based query fails.
Command Changes
peer-nri-length
A new keyword
rai-fqdn-fallback
has been included in the
peer-nri-length
command, this keyword is
configured to support RAI based query when NRI based query fails. This keyword is disabled by default.
configure
call-control profile profile_name
peer-nri-length length [rai-fqdn-fallback]
remove peer-nri-length [rai-fqdn-fallback]
end
Notes:
2G Context Request and Identification Request messages are not supported.
S4 support of this extensions for all applicable scenarios is not supported.
CSCtz56555 - SGSN Disable GTPv0 for specific set of APNs
Feature Changes
Disable GTPv0 Fallback to Prevent Unnecessary Signaling
Previous Behavior: By default, the SGSN supports GTPv0 fallback and uses either GTPv1 or GTPv0. After exhausting
all configured retry attempts for GTPv1, the SGSN retries the GTP-C Request using GTPv0. This fallback is conditional
and is done only when the GTP version of a GGSN is unknown during the first attempt at activating a PDP context with
the GGSN.
all configured retry attempts for GTPv1, the SGSN retries the GTP-C Request using GTPv0. This fallback is conditional
and is done only when the GTP version of a GGSN is unknown during the first attempt at activating a PDP context with
the GGSN.