Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 17
SGSN Enhancements for 17.0 ▀
Release Change Reference, StarOS Release 17 ▄
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This feature set allows the operator to handle the signaling storm, that MTC devices can bring to the network, thus
ensuring a more robust network and more efficient resource utilization.
ensuring a more robust network and more efficient resource utilization.
The operator defines the congestion-detection thresholds for each of the three congestion levels (critical, major, minor)
for:
for:
system CPU utilization - this is applicable to congestion control for both MM and SM messages (only APN-
based congestion control for SM messages).
system memory utilization - this is applicable to congestion control for MM messages.
service control CPU utilization - this is applicable to congestion control for MM messages.
Thresholds are defined using the existing (unmodified)
congestion-control threshold
command in the Global
Configuration mode.
Important:
For SM congestion to work, the apn-based option must be configured with the sm-messages reject
command (please see information in Command Changes section below).
Command Changes
A range of new commands or new keywords (for existing commands) have been created to enable you to configure and
control the various MTC congestion control functionalities. The commands and keywords are briefly described below.
For more detail about the congestion control commands, refer to the Command Line Interface Reference: Version 17 or
higher. For more information about the MTC Congestion Control feature and the various supported functionalities, refer
to the MTC Congestion Control chapter in the SGSN Administration Guide.
control the various MTC congestion control functionalities. The commands and keywords are briefly described below.
For more detail about the congestion control commands, refer to the Command Line Interface Reference: Version 17 or
higher. For more information about the MTC Congestion Control feature and the various supported functionalities, refer
to the MTC Congestion Control chapter in the SGSN Administration Guide.
congestion-control
This Global Configuration mode command enables or disables global congestion control for the SGSN and the
IMSIMgr. The syntax for this command has not been modified but the underlying behavior of the command has been
expanded to enable support for the SGSN’s new congestion-control functionalities.
IMSIMgr. The syntax for this command has not been modified but the underlying behavior of the command has been
expanded to enable support for the SGSN’s new congestion-control functionalities.
Important:
Enabling global congestion control with this
congestion-control
command is mandatory for any
congestion control functionality to be enabled.
configure
congestion-control
no congestion-control
end
Notes:
no
: Disables global congestion control when this filter is added to the command.
Either ‘enabled’ or ‘disabled’ displays as the configured congestion-control status in the first line of the output of
the
show congestion-control configuration
command.
congestion-control policy