9-54
Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide
Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004
Chapter 9 Switch Operating Procedures
Managing Path and Connection Traces
After you enter this command, the switch displays a report similar to the following example:
mgx8830a.1.PXM.a > dsppnportrange 1:2.1:2
minSvccVpi: 0 maxSvccVpi: 4095
minSvccVci: 35 maxSvccVci: 65535
minSvpcVpi: 1 maxSvpcVpi: 4095
Managing Path and Connection Traces
Cisco MGX switches support the following traces:
• path traces — the trace occurs only during call setup. Therefore, tracing is enabled before call set
up then actually occurs while PNNI routes the connection. The applicable connections are SPVCs,
SPVPs, SVCs, or SVPs.
• connection traces — the trace occurs for a call that has already been routed. You can trace the route
of existing SPVCs and SVCs.
For more information about enabling path and connection traces, refer to the Cisco MGX 8850
(PXM45/PXM1E), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Command Reference,
Release 5.
Displaying Path and Connection Traces
There are several commands that allow you to display trace information about a connection. By entering
these commands at the slave end of the connection, you can determine the path taken by a connection.
Table 9-26 describes these commands:
Clearing a Call at the Destination Node
When a call setup message reaches its destination, you can ensure that the call is cleared by entering the
pathtraceport command as follows:
mgx8830a.1.PXM.a > pathtraceport <portid> -X
Table 9-26 Path and Connection Trace Commands
Command Description
dsppathtracenode
<enable|disable>
Displays the nodal configuration for the path and connection trace.
dsppathtraceport
<portid>
Displays the port configuration for the path and connection trace.
dsppathtraceie
<portid>
Displays whether or not TTL 1E is included in the specified port’s
configuration.
dsppathtracebuffer
<portid><vpi><vci>
Displays a specific connection based on the physical port’s id, vpi, and vci.
dsppathtracebuffer Displays all path traces in all the path trace buffers.
conntrace Displays all path traces in all the path trace buffers.
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