How to Recover a Lost Password on a Cisco 2950 Switch

Resetting a Cisco 2950 is a little different from the rommon process of newer switches/routers. You will need to be connected with a console cable for this to work. Once you are connected and see something on the terminal window when you press enter, unplug the power cable. Next, hold down the mode button on …

Reset Catalyst Switches Running Cisco IOS Software

I have a couple of switches that I’m shipping to a different location, and I want to reset their configurations back to factory defaults. Here’s how to do this. From Cisco: “Switches running Cisco IOS Software have a running configuration file and a startup configuration file. The RAM stores the running configuration, and the NVRAM …

How Routers And ASA’s Process ACLs

Traffic that comes into the router is compared to ACL entries based on the order that the entries occur in the router. New statements are added to the end of the list. The router continues to look until it has a match. If no matches are found when the router reaches the end of the …

Replacing or Recovering a Lost Password on Cisco Routers

I’m going to explain how to replace the enable mode password and/or add yourself as a user on a Cisco router if you currently are unable to login but have console access. I will be performing all the commands on a Cisco 7204 VXR. It is possible to recover the enable or console login password. …

Cisco ASA 5520 Active/Standby Failover Configuration

I recently got a pair of Cisco 5520 ASA’s to replace my old PIX 515e device. These new devices are much nicer. They have the new ASDM interface, and can also be used for VPN. I got a pair of them so I can have redundant security. I’m going to describe how to configure Active/Standby …

How To: Upgrade Cisco IOS

I’ve been wanting to do a write-up on how to upgrade your Cisco IOS to a newer version for awhile, and today I’m going to do it! I’ll be using a Cisco 2970T 24 port gigabit switch with the 12.1 IOS on it, and no web console. I will be upgrading it to c2970-lanbasek9-tar.122-44.SE6. The …