I want to update the IOS on a CISCO Catalyst 2950. I'm connected via console:serial to my Windows 7 Ultimate machine. I've also got PuTTY installed. The internet is being routed thru a Linksys NR041. What configuration changes do I need to make, if any?

Normally means communicating with the router via a cable attached to a port on the router normally labelled "console". This is the most basic form of communicating with the router for start up config. Usually a serial connection to a PC or laptop using something like Hyperterminal or PuTTY.

Read this: http://www.cisco.com/c/en/us/support/docs/switches/catalyst-2950-series-switches/12040-pswdrec-2900xl.html

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You can use serial cable to connect via your pc , you will need software like putty to use it

putty download link :
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html

First thing you should try is to console to the device. Cisco has a proprietary console cable (serial on one end, ethernet-like connection on the other end). You can use PuTTy's (http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html) Serial option to connect via the console cable. Make sure PuTTy has the correct COM port selected.

To re-flash the device, you'll need the original .bin file or have a valid Cisco.com login to download a new one.

Let me know if you can get connected via the console first.

they may have different LAN Ip addresses

by reset, do you mean reboot? if so type reload

if resetting to factory type erase startup-config

you want to give IPs to your VLANs and also make physical interfaces members of a VLAN instead of giving IPs to physical interfaces

I recently had a client switch do this to me. The only way to get it working was to manually put the NIC on my laptop to 10 Mb and Half duplex. After calling Cisco and opening a TAC case, it was deemed faulty hardware.

If you have SmartNet (anyone buying Cisco should always buy SmartNet) on the switch, call TAC and open a case. It's probably faulty hardware.

Good Luck!

yellow light on ports means the port is not working or was shutdown due to port security

use software advisor in Cisco website to verify it.just follow the process.

console to it and show diag and see whether it detectable or not.

hope this help.