A fast way to determine if your switch or router has lost power recently.
These error messages are related to the default service configuration option built into Cisco IOS software, which attempts to access the service configuration files from a network Trivial File Transfer Protocol (TFTP) server. To get rid of the errors and the constant searching for a TFTP server just follow these steps.
If you don’t have all of the switches documented with the serial numbers in a handy location it can be thorough pain to get the serial numbers especially if the switches are in a different geographical location. Here’s how you get that info without too much sweat.
One of the most annoying things I can think of is having multiple Cisco IOS terminal sessions open and then switching back over to one of the terminal windows only to find that the session has been disconnected. Here is how you fix that.
Cleaning up (or inheriting) someone else’s CISCO mess can be very frustrating. This is just my notes and dealings with an ASA5510 that I inherited.
The Cisco IOS software documentation set is intended primarily for users who configure and maintain Cisco networking devices (such as routers and switches) but who may not be familiar with the tasks, the relationship between tasks, or the Cisco IOS software commands necessary to perform particular tasks.
First of all, I am not the author of this content. This is a section taken from Cisco Document ID: 24061 on how to Recover a Cisco IOS Catalyst 4500/4000 Series Switch from a Corrupt or Missing Image or in Rommon Mode.