3com WXR100 3CRWXR10095A User Manual

Page of 728
Running Traces
631
Running Traces
Trace commands enable you to perform diagnostic routines. You can set 
a trace command with a keyword, such as authentication or sm, to 
trace activity for a particular feature, such as authentication or the session 
manager.
WARNING: Using the set trace command can have adverse effects on 
system performance. 3Com recommends that you use the lowest levels 
possible for initial trace commands, and slowly increase the levels to get 
the data you need. 
Using the Trace
Command
Tracing is used only for debugging MSS. The command set trace area 
enables you to view messages about the status of a specific portion of the 
MSS. 
There are many trace parameters that you can run. (See “List of Trace 
Areas” on page 634.) However
, this chapter describes only 
authentication, authorization, the session manager (sm), and 802.1X 
users (dot1x), four areas that you might find most helpful. 
To focus on the object of the trace, you can add one or more of these 
parameters to the set trace command:
set trace [area] [mac-addr mac-addr] [port port-num
[user username] [level level]
Tracing Authentication Activity
Tracing authentication activity can help you diagnose authentication 
problems. You can trace all authentication activity, or only the activity for 
a specific user, MAC address, or port. 
For example, to trace all authentication activity at level 4, type the 
following command:
WX1200# set trace authentication level 4
success: change accepted.
Tracing Session Manager Activity
You can trace all session manager commands, or only those for a specific 
user, MAC address, or port. For example, to trace all session manager 
(sm) activity at level 3, type the following command:
WX1200# set trace sm level 3
success: change accepted.