Network technologies and trends:

Router Troubleshooting

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October 11, 2009  6:05 AM

“Show processes cpu sorted” good command to troubleshoot a Cisco Router CPU utilization



Posted by: Yasir Irfan
Cisco Routers, Cisco Switches, CPU Utilization, CPU utilization graph, IOS 12.2 T, Network Technologies and Trends, Router Troubleshooting, show processes cpu history, show processes cpu sorted, switch troubleshooting, troubleshooting, Yasir

September 8, 2009  9:45 AM

Remote Telnet useful tips!



Posted by: Yasir Irfan
Cisco, Cisco 3560, Cisco Learning, Cisco Routers, Cisco Switch, Cisco Tips, Cisco Troubleshooting, IOS commands, Network Troubleshooting, reload, Router Troubleshooting, SSH, Switches, Telnet

 

We all work remotely with Cisco routers and Switches, we often do login to do some configuration changes in the Cisco routers and...


December 13, 2008  6:27 AM

How to configure an interface to default settings in a Cisco Switch or a Cisco Router?



Posted by: Yasir Irfan
Cisco, Cisco 2950, Cisco 2960, Cisco 3560, Cisco 3745, Cisco 3750-E, Cisco 6500, Cisco 6500 Series Catalyst Switch, Cisco 6503, Cisco 877W Router, Cisco Catalyst 6503-E Switch, Cisco Catalyst 6506-E Switch, Cisco Catalyst 6509-E Switch, Cisco Catalyst 6509-V-E Switch, Cisco Catalyst 6513 Switch, Cisco IOS, Cisco Tips, Router Troubleshooting, Routers, Routing, Routing and Switching, Switches, Switching

This is a cool command to erase just the configuration for a particular interface in a Cisco Switch or a Cisco Router.

In the following example we will configure the interface fast Ethernet 0/9...


August 20, 2008  6:22 AM

What is Service timestamps logging, and how it can be configured Cisco Switch or a Router?



Posted by: Yasir Irfan
Cisco, Cisco 2950, Cisco 3745, Cisco 6500, IOS commands, Router Troubleshooting, Service timestamp, Switches, Syslog

Logging is a quite essential part of a secure network configuration. Logging not only helps the Network Administrators to identify the issue while troubleshooting, also enables them to react to intrusion attempts or Denial-of –Service attacks....


August 5, 2008  6:52 AM

Show Commands in Cisco Routers and Layer 3 Switches(Most commonly used)Series -2



Posted by: Yasir Irfan
Cisco, Cisco 3560, Cisco Tips, IOS commands, Networking, Router Troubleshooting, Routers, Show commands, Switches

In my previous post I tried to cover some of the show commands which are...


August 2, 2008  6:43 AM

Show Commands in Cisco Routers and Layer 3 Switches(Most commonly used)Series -1



Posted by: Yasir Irfan
ASA/PIX, Cisco, Cisco 2950, Cisco 3560, Cisco 3560-E, Cisco 3745, Cisco 3750-E, Cisco 525, Cisco 6500, Cisco Tips, IOS commands, PIX 525, Router Troubleshooting, Routers, Show commands, Switches

Some of the widely used commands in Cisco routers are just simple unavoidable, among the most commonly used commands in a Cisco Routers are “show” commands. These commands are essential to Network Administrators. Here is a list of those commands. I...


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