Saturday, March 13, 2010

IPv6 RIPng dynamic routing

The linked video demonstrates RIPng, our first dynamic routing protocol for IPv6. This is a simple but inefficient routing protocol. The metric is based on number of router hops, with no provision for differentiating between links with drastically different bandwidth (a frame-relay hop has the same cost as a 10-gig-ethernet in RIPng). Each router multicasts its entire routing protocol out each interface every 30 seconds, which wastes router CPU. RIPng routinely takes minutes to reroute around network failures.
RIPng does have the refinements added in RIPv2. For example, it multicasts its route updates. It is also capable of including tags in the route updates.
The big advantage of RIPng is that it is simple to understand. But in production that is not good enough. RIPng is a perfect protocol for a computer science student to implement as a class project due to its simplicity, but having the PBX unreachable for 3-5 minutes while routing reconverges is unacceptable in a business environment.

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21 Comments:

Blogger Darrell Root said...

IPv6 RIPng network map link

March 13, 2010 at 9:20 PM  
Blogger Charles said...

Darrell:

I want to thank you for all the podscasts, they were both informative at the theory level, and let me see and then do the practical aspect of controlling switches and routers.

All i can say is that with your podcasts I was able, along with a lot of study pass my CCNA today. Thanks.

I have been letting all my colleagues know about your site.

-chaz
PS: I like the new larger format of the videos, some of the older ones forced me to do on the fly character reconstruction with my own wet-ware

April 5, 2010 at 11:31 PM  
Blogger Stev1e said...

These podcasts have been a great help to me professionally and I would like to sincerely thank you for them.

June 8, 2010 at 3:16 PM  
Blogger Anonymous coward said...

Hi Darrell,

Thank very much for all the podcasts.

July 10, 2011 at 6:29 PM  
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December 11, 2011 at 1:26 AM  
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