Troubleshooting Guide

Table 23: Variable definitions
Variable Value
{67–179} {0–4} Starts the trace by specifying the module ID and
level.
<67-179> specifies the module ID.
<0-4> specifies the trace level from 0–4, where 0 is
disabled; 1 is very terse; 2 is terse; 3 is very verbose,
4 is verbose.
WORD<0–1024> Performs a string search in the trace.
Troubleshooting USB viewing problems
After you insert a USB device in the USB slot, the Linux system automatically detects and mounts
the device. If you cannot view files on the device, perform this procedure.
Note:
This procedure applies only to the VSP 4450 platform. It does not apply to the VSP 4850
platform.
Procedure
1. Enter Privileged EXEC mode:
enable
2. Check the file system:
ls /usb/
3. Remove a USB device:
a. Unmount the USB device:
usb-stop
b. Wait for the response that indicates it is safe to remove the device.
c. Physically remove the device.
4. Remove and then reinsert the device.
5. Check the device for errors:
dos-chkdsk /usb
Run the dos-chkdsk /usb repair command, if at the end of the dos-chkdsk /usb
command output you see:
1) Correct
2) Don’t correct
Hardware troubleshooting
January 2017 Troubleshooting 92
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