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This section provides the minimum instruction set for configuring congestion control. Commands that
configure additional interface or port properties are provided in
Subscriber Configuration Mode
in the
Command Line Interface Reference
. Always refer to the Administration Guides for all of the licensed
products running on this platform for additional configuration information with respect to congestion
control. Congestion control functionality varies based on product and StarOS version.
Important
For the MME three levels of congestion control thresholds are supported
–
critical, major and minor. By
default only the critical threshold is supported for other products. SNMP traps also support major and minor
congestion control thresholds. A set of
congestion-action-profile
commands allows an operator to establish
additional actions to be taken for specific thresholds and threshold levels.
Configuring Congestion Control
To configure Congestion Control functionality:
Step 1
Configure congestion control thresholds as described in
Configuring the Congestion Control Threshold, on page 248
Step 2
Configure service congestion policies as described in
Configuring Service Congestion Policies, on page 249
Step 3
Enable redirect overload policies as described in
Enabling Congestion Control Redirect Overload Policy, on page 250
Step 4
Configure disconnecting subscribers based on call or inactivity time as described in
Disconnecting Subscribers Based
on Call or Inactivity Time, on page 250
Step 5
Save your configuration as described in the
Verifying and Saving Your Configuration
chapter.
Configuring the Congestion Control Threshold
To configure congestion control threshold, apply the following example configuration in the Global
Configuration mode of the CLI:
configure
congestion-control threshold max-sessions-per-service-utilization percent
congestion-control threshold tolerance percent
end
Notes:
•
There are numerous threshold parameters. See
Global Configuration Mode Commands
in the
Command
Line Interface Reference
for more information.
•
The tolerance is the percentage under a configured threshold that dictates the point at which the condition
is cleared.
•
Multiple levels of congestion thresholds
–
critical, major and minor
–
a re supported for various types
of congestion control thresholds. If a threshold level is not specified, the default is critical. Currently,
major and minor thresholds are only supported for the MME. The
congestion-action-profile
command
under
lte-policy
defines the action to be taken when thresholds are exceeded. See
Global Configuration
ASR 5000 System Administration Guide, StarOS Release 21.1
248
Congestion Control
Configuring Congestion Control
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