Cisco Cisco ASR 5000
SGSN Global Configuration Mode Commands
aggregate-ipc-msg ▀
Command Line Interface Reference, StarOS Release 18 ▄
8535
num-msgs number_msgs
Configure the number of IPC messages to aggregate before flushing.
number_msgs
: Enter the integer 1 (to disable aggregation) or an integer from 2 to 164 to define the number
of messages. Default is 10.
Important:
Setting
num-msgs
to a value of 1 will disable message packet aggregation.
Usage
Use this command to enable/disable aggregation of IPC messages in the linkmgr and/or the sessmgr. This
command includes options to configure the frequency of aggregated message flushing and the number of
packets to be buffered before the flush. This command provides a solution for reducing latency while sending
the IPC messages towards the core network (CN).
The flushing limit will be based on either desired flush-frequency or maximum number of messages to be
aggregated. Repeat the command to engage multiple limits.
By default, the link manager buffers packets and then send them over the SCCP link if there are events to be
sent via SCCP Connection Request (SCCP CR) towards the core node. The HNB-GW/SGSN aggregate
packets for 100 msec and send them with whatever aggregation has been done during those 100 msecs.
At the HNB-GW/SGSN, this command can be used to reduce the processing involved in sending every event
individually towards the core node in the following manner:
command includes options to configure the frequency of aggregated message flushing and the number of
packets to be buffered before the flush. This command provides a solution for reducing latency while sending
the IPC messages towards the core network (CN).
The flushing limit will be based on either desired flush-frequency or maximum number of messages to be
aggregated. Repeat the command to engage multiple limits.
By default, the link manager buffers packets and then send them over the SCCP link if there are events to be
sent via SCCP Connection Request (SCCP CR) towards the core node. The HNB-GW/SGSN aggregate
packets for 100 msec and send them with whatever aggregation has been done during those 100 msecs.
At the HNB-GW/SGSN, this command can be used to reduce the processing involved in sending every event
individually towards the core node in the following manner:
If aggregation is enabled, then there could be a time delay for sending SCCP CRs depending on
configuration of the HNB-GW or SGSN.
If aggregation is reduced to 1, then there will be no delay for aggregation and events are sent via SCCP
CR without delay. This reduces the SCCP connection setup time.
To view aggregate IPC message statistics, use command
show config | grep aggregate-ipc-msg
.
Example
Configure the linkmgr to buffer
45
messages before flushing the linkmgr IPC messages:
aggregate-ipc-msg linkmgr flush-frequency 45
The following command configures the linkmgr to flush the IPC messages towards the CN without
aggregation:
aggregation:
aggregate-ipc-msg linkmgr1
The following command configures the sessmgr to flush the IPC messages towards the CN without
aggregation:
aggregation:
aggregate-ipc-msg sessmgr1