Cisco Cisco Packet Data Interworking Function (PDIF)
SAEGW Changes in Release 17
▀ SAEGW Enhancements for 17.1
▄ Release Change Reference, StarOS Release 17
422
CLI-based trigger to disconnect
per APN when P-GW initiated disconnection for above mentioned timer expiry
Important:
Cause IE Enhancement for Delete Bearer Request is a license-controlled feature. A valid feature
license must be installed prior to configuring this feature. Contact your Cisco account representative for more
information.
information.
Previous Behavior:
1. When GGSN/P-GW/SAEGW sends Delete Bearer Request/Delete PDP Context Request due to CLI
clear
subscribers
, its cause-IE is not configurable.
2. When P-GW/SAEGW sends Delete Bearer Request due to “timeout-idle”, “timeout absolute”, or “timeout
bearer-inactivity” of default bearer, its cause-IE is not configurable.
3. When GGSN sends Delete PDP Context Request due to “timeout-idle”, “timeout absolute”, or “timeout bearer-
inactivity” to delete the PDN Connection, its cause-IE is not configurable.
New Behavior:
1. When GGSN/P-GW/SAEGW sends Delete Bearer Request/Delete PDP Context Request due to CLI
clear
subscribers
, the cause-IE to be used may optionally be specified by the operator in CLI. The CLI also
allows the operator not to include cause-IE.
2. When P-GW/SAEGW sends Delete Bearer Request due to “timeout-idle”, “timeout absolute”, or “timeout
bearer-inactivity” of default bearer, the cause-IE to be used may optionally be specified by the operator during
configuration. The configuration also allows the operator not to include cause-IE.
configuration. The configuration also allows the operator not to include cause-IE.
3. When GGSN sends Delete PDP Context Request due to “timeout-idle”, “timeout absolute”, or “timeout bearer-
inactivity” to delete the PDN Connection, the cause IE to be used may optionally be specified by the operator
during configuration. The configuration also allows the operator not to include cause-IE.
during configuration. The configuration also allows the operator not to include cause-IE.
Customer Impact: Cause-Code during PDN connection teardown may be modified.
Important:
This feature allows operator to override existing behavior. Such overridden behavior may not be
compliant with standards.
Command Changes
clear subscribers
When subscribers are deleted, the GGSN/P-GW/SAEGW may include “Cause-IE” in the resulting Delete Bearer
Request/Delete PDP Context messages for default bearer. The new keyword
Request/Delete PDP Context messages for default bearer. The new keyword
del-cause
is optional and can be
combined with existing options to modify “Cause-IE” behavior.
clear subscribers all [ del-cause { reactiv-req | none } ] [ verbose ] [ -noconfirm ]
clear subscribers apn apn_name [ del-cause { reactiv-req | none } ] [ verbose ] [ -
noconfirm ]
noconfirm ]
Notes:
del-cause
: Specifies the GTP cause code used in Delete Bearer/Delete PDP Context Requests generated for
default bearer.
reactiv-req
: The DBR/DPC will include “Cause-IE” with GTP cause code “Reactivation Requested”.
none
: Omit GTP cause IE in DBR/DPC generated for default bearer.