для Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 16
▀ SGSN Enhancements for 16.0
▄ Release Change Reference, StarOS Release 16
528
Now, in both 2G and 3G network sharing scenarios, for roaming subscribers the Redirection Indication IE will be sent if
an Attach or RAU is rejected with GMM cause code #17 - Network Failure when the SGSN receives MAP error for
“System Failure” or “Unexpected Data” value from the HLR.
an Attach or RAU is rejected with GMM cause code #17 - Network Failure when the SGSN receives MAP error for
“System Failure” or “Unexpected Data” value from the HLR.
For 3G network operators, the operators have a new CLI to disable this new behavior.
Customer Impact: The HPLMN operator may accept Update Location from one sharing VPLMN operator but reject
Update Location with cause code #17 from another sharing VPLMN operator. Previously, as soon as one sharing
VPLMN operator receives MAP reject with cause #17, all sharing VPLMN operators stopped registering the subscriber.
With the new behavior, VPLMN operators using shared networks should be able to accept registrations that are not
accepted for the other sharing operators.
Update Location with cause code #17 from another sharing VPLMN operator. Previously, as soon as one sharing
VPLMN operator receives MAP reject with cause #17, all sharing VPLMN operators stopped registering the subscriber.
With the new behavior, VPLMN operators using shared networks should be able to accept registrations that are not
accepted for the other sharing operators.
Command Changes
network-sharing
For roaming subscribers in 3G MOCN only, the new keyword
stop-redirect-reject-cause
enables the operator
to disable the new behavior and stop sending redirection indication RANAP Reject messages when reject is due to
GMM cause #17 (network failure) related to System Failure or Unexpected Data value MAP error from the HLR. So the
operator would change to send redirection complete.
GMM cause #17 (network failure) related to System Failure or Unexpected Data value MAP error from the HLR. So the
operator would change to send redirection complete.
configure
context context_name
iups-service service_name
network-sharing stop-redirect-reject-cause network-failure
{ default | no } network-sharing stop-redirect-reject-cause
end
Notes:
default
enables the sending of redirect indication in Attach Reject or RAU Reject if reject is due to GMM
cause ‘network failure’ which resulted from one of the MAP errors unexpected data value or system failure.
no
disables this configuration and instructs the SGSN to follow default behavior.
Performance Indicator Changes
SGSN Schema
The following new bulk statistic variables have been introduced under the SGSN schema to track redirection as a cause
for network failure:
for network failure:
redir-attach-rej-gprs-nf
redir-attach-rej-comb-nf
redir-periodic-rau-nf
redir-rau-gprs-intra-sgsn-rej-nf
redir-rau-comb-intra-sgsn-rej-nf