Release Note для Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 15.0
▀ SGSN Enhancements for March 31, 2014
▄ Cisco ASR 5x00 Release Change Reference
488
Command Changes
llc random-value-in-iov-ui
New configuration options,
negotiation-failure-action { fallback-to-default-iovui | reject }
,
enable the operator to specify the desired failure action to be performed whenever the random IOV-UI negotiation fails.
The operator has the option to either
The operator has the option to either
(a) reject the call whenever the deciphering fails due to the random IOV-UI negotiation failure (thus avoiding a
security breach), or
(b) to fall back to the default IOV-UI.
configure
context context_name
gprs-service service_name
llc random-value-in-iov-ui [ negotiation-failure-action { fallback-to-default-
iovui | reject } ]
iovui | reject } ]
default llc random-value-in-iov-ui
end
Notes:
default
resets the SGSN configuration so that all calls are rejected whenever the decipering fails due to
failure of the XID negotiation for random IOV-UI.
reject
returns the SGSN to the default configuration to reject all calls when random IOV-UI negotiation fails.
fallback-to-default-iovui
allows the operator to return to the previous behavior where the SGSN falls
back to unencrypted mode whenever the XID negotiation for random IOV-UI negotiation fails.
Performance Indicator Changes
show session disconnect-reasons verbose
If configiured for ‘Reject’, a new disconnect reason tracks the number of calls cleared due to the new default behavior to
reject any call when random IOV-UI negotiation fails.
reject any call when random IOV-UI negotiation fails.
sgsn-iovui-negotiation-failure(556)
show gprs-service name
Configuration of this feature can be viewed in the output display of both the
show configuration
and the
show
gprs-service
with a new display field
Random IOVUI negotiation failure action: