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Catalyst 2950 and Catalyst 2955 Switch Software Configuration Guide
OL-10101-02
Chapter 31 Troubleshooting
Using the show controllers Commands
For more information about auto-QoS, see the “Configuring Auto-QoS” section on page 29-9.
This example shows how to display the QoS commands that are automatically generated when auto-QoS
is enabled:
Switch# debug auto qos
AutoQoS debugging is on
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface gigabitethernet0/17
Switch(config-if)# auto qos voip cisco-phone
Using the show controllers Commands
You can display the statistics, configuration, and other information about the Catalyst 2950 LRE switch,
the connected CPE devices, and the LRE link. Use the privileged EXEC commands in
Table 31-3 to
display this information:
For more information about the fields in the command output, refer to the switch command reference for
this release.
Using the crashinfo File
This feature is available if your switch is running Cisco IOS Release 12.1(11)EA1 or later.
The crashinfo file saves information that helps Cisco technical support representatives to debug
problems that caused the software image to fail (crash). The switch writes the crash information to the
console at the time of the failure, and the file is created the next time you boot the image after the failure
(instead of while the system is failing).
Step 5
end Return to privileged EXEC mode.
Step 6
show auto qos interface interface-id Verify your entries.
This command displays the auto-QoS configuration that was initially
applied; it does not display any user changes to the configuration that
might be in effect.
Command Purpose
Ta b l e 31-3 Commands for Displaying LRE and CPE Information
show controllers ethernet-controller
interface-id [asic | cpe [port port-id] | phy]
Displays per-interface transmit and receive statistics read from the hardware,
the interface internal registers, and the statistics read from LRE and CPE
ports.
show controllers lre cpe {identity | mfg |
protected | version} [interface-id]
Displays information about the Cisco LRE CPE devices connected to an
LRE switch.
show controllers lre Displays information about the LRE link.
show controllers lre log Displays the history of the link, configuration, and timer events for a specific
LRE interface or for all the LRE switch interfaces.