
Chapter 3 Troubleshooting
Troubleshooting Common System Problems
CPUHOG Errors
The router displays a
For more information on what could cause this problem and how to resolve it, see the document What Causes
http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_tech_note09186a00800a6ac4.sht ml
Debug and System Messages
A large volume of debugging messages or system messages can take a significant amount of processor time, because the
Use the following techniques to reduce the number of these messages:
1.Turn off the debugging messages by entering the no debug all command in privileged EXEC mode:
Router# no debug all
All possible debugging has been turned off
Router#
2.Disable console messages by using the no logging console command in global configuration mode:
Router# configure terminal
Router(config)# no logging console
Router(config)#
To keep the logging of console messages, but to limit the number of messages that can be displayed, use the logging
Router(config)# logging
Router(config)# logging
3.If you have logged into the router using a Telnet connection, you can disable debug messages using the terminal default monitor command in privileged EXEC mode:
Router# terminal default monitor
Router#
Exec and Virtual Exec Processes
The Exec process is the Cisco IOS process that handles the TTY serial lines (console, auxiliary, asynchronous), and the Virtual Exec process handles the Virtual TTY (VTY) Telnet sessions. These processes run as
Cisco uBR10012 Universal Broadband Router Troubleshooting Guide
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