Ads By Google

Latest Articles

Most Popular

Troubleshooting Toolbox: Last Input/Output Counters

Routing and Switching

Once again we take a look at the show interfaces output to assist with troubleshooting.  This lesson will look at the last input/output counters.  We will learn what these counters monitor as well as when we can (and cannot) use them for troubleshooting.

 

Troubleshooting Toolbox: Last Input/Output Counters

Troubleshooting Toolbox: Last Input/Output Counters

Last Updated (Saturday, 06 August 2011 21:32)

Read more...

 

Troubleshooting Toolbox: Clearing Interface Counters

Routing and Switching

Although it may not seem to be an important tool in our troubleshooting toolbox, the ability to clear interface counters is very important. This lesson will introduce you to the clear counters [interface] command as well as show you when to use this command instead of the more comprehensive clear counters command.

 

Troubleshooting Toolbox: Clearing Interface Counters

Troubleshooting Toolbox: Clearing Interface Counters

Last Updated (Saturday, 04 June 2011 19:56)

Read more...

 

Cool Cisco IOS Commands - debug interface

General Networking

When you are performing debugs you have at least two concerns: 1) making sure the that debug does not clobber the CPU of your device, and 2) filtering the debug output to get to the information that you need for troubleshooting your issue. The debug interface command can help you with the second issue.

In many cases (especially on production equipment) you may have a lot of interfaces running the protocol that you are troubleshooting. When you enable a debugging command (like debug ip ospf hello), the output that will be returned is for all interfaces running that protocol. This can quickly overwhelm you with information and make troubleshooting more difficult/time consuming.

The debug interface command allows you to limit the debug output to a specific interface.

Cool Cisco IOS Commands - debug interface

Cool Cisco IOS Commands - debug interface

Last Updated (Monday, 28 March 2011 15:30)

Read more...

 
Polls
Which routing protocol would you like me to create lessons on first?
 
Search
Who's Online
We have 45 guests and 3 members online
Follow Packet Lab
Twitter: packetlab YouTube: packetlab Facebook: packetlab External Link: www.packet-lab.com/blog/blog-home/ Technorati: packetlab FriendFeed: packetlab External Link: packetlab.posterous.com Diigo: packetlab