Cisco Cisco Packet Data Interworking Function (PDIF)
SGSN Changes in Release 17
▀ SGSN Enhancements for 17.0
▄ Release Change Reference, StarOS Release 17
506
Notes:
echo-max-retransmissions
: Configures the maximum retries for GTP Echo requests. This option must be an
integer from 0 to 15. The default is 4. If echo-max-retransmissions configuration option is not configured, then the max-
retransmissions configuration will be used for maximum number of echo retries.
retransmissions configuration will be used for maximum number of echo retries.
Performance Indicator Changes
show egtp-service [ all | name
service_name
]
The output of this command has been enhanced to show the configured number of GTPC echo max retransmissions.
GTPC Echo Max Retransmission
show peer-profile full [ all | name
service_name
]
The output of this command has been enhanced to show the configured number of GTPC echo max re-transmissions.
GTPC Echo Max Retransmission
CSCul29734 - Support of pooled and non-pooled RNCs/BSCs
Feature Changes
Different NRIs for Pooled and Non-pooled RNCs/BSCs
The SGSN adds support for configuring different NRIs for pooled and non-pooled areas in order to load-balance
subscribers coming from non-pooled RNCs to pooled RNCs.
subscribers coming from non-pooled RNCs to pooled RNCs.
Consider a scenario when two SGSNs support pooling and a RNC/BSC controlled by a SGSN is in pool but not the
other, and both RNCs/BSCs are given same NRI(s), this leads to imbalance in subscriber distribution between the
SGSNs. With this enhancement if an NRI is configured for both pooled and non-pooled, then the SGSN reuses the same
NRI when moving from pooled to non-pooled areas and vice versa.
other, and both RNCs/BSCs are given same NRI(s), this leads to imbalance in subscriber distribution between the
SGSNs. With this enhancement if an NRI is configured for both pooled and non-pooled, then the SGSN reuses the same
NRI when moving from pooled to non-pooled areas and vice versa.
A new keyword
non-pooled-nri-value
is introduced in the NRI configuration for GPRS and SGSN services to
configure set of NRI which should be used for non-pooled RNCs/BSCs. The NRIs configured under the existing
keyword
keyword
nri-value
will be used for pooled RNCs/BSCs. If the new keyword
non-pooled-nri-value
is not
configured, then NRIs configured under the keyword
nri-value
will be used for both pooled and non-pooled
RNCs/BSCs.
If the new keyword
non-pooled-nri-value
is configured without pooling enabled at SGSN (null-nri-value is not
configured), then SGSN will use NRIs under
non-pooled-nri-value
irrespective of BSC/RNCs being pooled or
non-pooled, till pooling is enabled at SGSN. After pooling is enabled, NRIs under keyword
nri-value
will be for
pooled RNC/BSCs and
non-pooled-nri-value
will be for non-pooled RNC/BSCs. This is applicable for both SGSN
and GPRS service.
Previous Behavior: It is not possible to configure different NRIs for pooled and non-pooled areas.
New Behavior: The SGSN now allows configuring different NRIs for pooled and non-pooled areas. A new keyword
non-pooled-nri-value
is introduced in NRI configuration for GPRS and SGSN services to specify NRI(s) for non-
pooled areas.
Customer Impact: Enables the re-balancing of resources between pooled and non-pooled RNCs to enhance
operational efficiency.
operational efficiency.