Troubleshooting guide

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Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide
OL-0800-14
Chapter 3 Cisco PGW 2200 Softswitch Platform Operations
Regular Operations
• comp_name—MML name for the SS7 signaling path or trunk group for which you modify the
duration of the ACL timer.
• num—Duration of the ACL timer, in seconds. The default is 5.
For example, to change the duration of the ACL timer to 20 seconds on a trunk group named trunk1,
enter the following command:
prov-ed:trnkgrpprop:name=”trunk1”,ACLDur=20
Step 3 Save and activate your provisioning changes as described in the “Saving and Activating your
Provisioning Changes” section on page 3-65.
Managing Incoming Load Control
When the Cisco PGW 2200 Softswitch is overloaded and must reduce congestion, it uses Incoming load
control (ILC) to regulate incoming traffic. When the Cisco PGW 2200 Softswitch enters and abates the
different MCLs, it reroutes or rejects calls according to user-defined settings.
Because ITU-based signaling points use a three-level congestion standard, the Cisco PGW 2200
Softswitch supports a command that maps the MCL values to the ITU congestion standard. No
modification is necessary for systems that use the ANSI congestion standard.
The following list presents the measurements of five threshold values that determine the MCLs:
• Call rate (callrate)—Measures the number of incoming call attempts per second.
• CPU utilization (cpu)—Measures the percentage of CPU utilization.
• Engine input queue length (queuelen)—Measures the number of messages waiting in the call engine
input queue.
• Memory address utilization (memoryaddress)—Measures the percentage of physical memory
address space that is in use.
• Virtual memory address utilization (virtualmemory)—Measures the percentage of virtual memory
address space that is in use.
You can configure the onset and abatement settings for each of these threshold values. You can also
configure the percentage of calls that is released once the thresholds are met. Table 3-17 lists the default
values for the MCL thresholds.
The following sections describe ICL:
• Mapping Machine Congestion Level to the ANSI or ITU Congestion Standard, page 3-92
• Modifying MCL Threshold Values, page 3-93
Table 3-17 Default Values for the MCL Thresholds
Threshold MCL1 Onset MCL1 Abate MCL2 Onset MCL2 Abate MCL3 Onset MCL3 Abate
cpu 827590779385
virtualmemory807585809080
memoryaddress848088829385
queuelen 75 60 80 70 85 75
callrate000000