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Cisco router tutorials

Serial Point-to-Point Encapsulation Explained

contributed by aaronm on April 20, 2006 under Cisco router

This is an explanation of serial connection encapsulation (HDLC / PPP) and suggestions on it’s use.

Cisco Router: Soft and Hard boot of BGP

contributed by aaronm on March 15, 2006 under Cisco router

Simple commands to reset BGP as a first step troubleshooting technique

Change configuration registry on older Cisco routers

contributed by qmchenry on February 21, 2006 under Cisco router

I ran across an ancient 2500 series router today and had to go through a password recovery. The rommon version was earlier than any I’d seen before. The help functionality was very lean. Here’s how to set the confreg for these geezers.

How to disable Cisco router domain name lookup

contributed by aaronm on January 26, 2006 under Cisco router

Ever foul up a command on a router or switch and have to sit there and wait for five minutes while it translates for the “domain” ?

Protocol Discovery

contributed by larkspur on December 19, 2005 under Cisco router

Check and customize what protocols are running through your router with nbar protocol-discovery. this gives you packet count, byte count, 5 min bit rate, and 5 min max bit rate.

Recovery EPROM Cookie on Router Cisco

contributed by jotfco on September 2, 2005 under Cisco router

Sometimes when rains a lighting could damage your router, that’s what happened to me last week.The problem was that the lighting deleted the cookies of my router’s eprom, it contains the data that the bootloader use to determine the MAC address,the CPU version,the vendor etc. Based on this informations the IOS runs or not on the platform, if these cookie are lost (my chase) the router cannot start…..

Configuring a frame-relay switch and core router using 1 router

contributed by Headhunter on December 6, 2004 under Cisco router

This recipe will show how to configure a Frame-Relay switch and a core router within one router creating a hub-and-spoke topology.

Creating users on a Cisco router

contributed by Headhunter on October 7, 2004 under Cisco router

This will allow you to create multiple users on a router and is a handy tool to find out who did what at what time (permitting logging is on and the correct date/time is configured)

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