Wednesday, June 28, 2006

IGRP: Interior Gateway Routing Protocol

IGRP is a Cisco-proprietary routing protocol. It is a classful distance vector protocol with a metric based on bandwidth and delay. This is superior to RIP, whose metric is based on hop-count. IGRP's classfulness makes it a bad choice for new deployments, but its advanced metric is worth study.

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2 Comments:

Blogger Teacum said...

About 21 minutes into the video you have a slight addition error. You calculated the IRGP metric to be 9176 and IGRP calculated it as 8976. The first reason for this is that you copied the Bandwidth part of the metric as 6576 (from the original 6476). The 2nd error was that you just added the numbers wrong.

Long Story Short is that your calculation of the metric and IGRP's calculation is the same (minus an addition error).

Thanks for the Videos!!!

May 18, 2009 at 12:37 PM  
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April 19, 2017 at 3:51 AM  

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