1. Launch putty and connect to your Cisco router/switch
2. Enter the user exec mode (router> enable)
3. Enter the terminal length 0 command (router# terminal length 0) in order to force the router to return the entire response at once, rather than one screen at a time. This allows you to capture the configuration without extraneous −−more−− prompts generated when the router responds one screen at a time.
4. Right-click on the menu bar of the Putty screen and select “Change Settings”
5. Go to Session and click on Logging, select “Log all session output”
6. Click on Browse and choose the location and name of the file (I like to place my config file on my desktop – C:\Documents and Settings\Administrator\Desktop\config.txt)
7. Click apply.
8. Now enter the show run command (router# show run), then log out and see the output in config.txt on your desktop (or the location you chose).