Cisco Cisco ASR 5000
MTC Congestion Control
Configuring MTC Congestion Control ▀
SGSN Administration Guide, StarOS Release 18 ▄
Notes:
threshold_value
: Enter an integer from 1 to 100 to define a percentage threshold value.
For congestion control of mobility management messages, any of the above parameters can be configured.
For congestion control of session management messages, only "system-cpu-utilization" is supported.
At present, only APN-based congestion control is applicable for session management messages.
Verifying System-detected Congestion Thresholds Configuration
Use the command illustrated below to verify thresholds you may have configured with the commands illustrated above.
The display will include a section for Critich threshold parameters, Major threshold parameters, and Minor threshold
parameters. The following display only illustrates samples for Critical threshold parameters.
The display will include a section for Critich threshold parameters, Major threshold parameters, and Minor threshold
parameters. The following display only illustrates samples for Critical threshold parameters.
The following command is entered from the Exec mode:
[local]SGSN1-NH# show congestion-control configuration
The following provides a sample of the display generated by the command illustrated above:
[local]R16sgsn-Sim# show congestion-control configuration
Congestion-control: enabled
Congestion-control Critical threshold parameters
system cpu utilization: 80%
service control cpu utilization: 80%
system memory utilization: 80%
message queue utilization: 80%
message queue wait time: 5 seconds
port rx utilization: 80%
port tx utilization: 80%
license utilization: 100%
max-session-per-service utilization: 80%
tolerance limit: 10%
Notes:
At this time, you are only setting the values for the first three displayed parameters.
Configuring SGSN Congestion Control
The following configuration is mandatory to enable congestion control on the SGSN.