[c-nsp] eigrp split horizon with SRP

Michael Smith mksmith at noanet.net
Wed Oct 20 16:55:21 EDT 2004


 
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Have you looked at the "ip split-horizon eigrp <as number>"
sub-command for the SRP interface?  If you are having difficulties
you may wish to look at OSPF which works quite will in an SRP
environment with just a few commands.

Mike

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Josh Duffek
> Sent: Monday, October 18, 2004 8:36 AM
> To: cisco-nsp at puck.nether.net
> Cc: cisco-rp at external.cisco.com
> Subject: [c-nsp] eigrp split horizon with SRP
> 
> Here is a snippet of my topology:
> 
> 
>          /------[Main]
>         /       /    \
>        /       /      \
>     (t1)    (oc48)     \
>      \      /   \      (t1)
>       \    /     \      /
>        \  /       \    /
>       [site1]   [site2]
>          \_______/
> 
> So, each of my sites has a connection on the ring and a t1 for
> backup. Because of split horizon the routes I RX on my SRP don't
> get sent back out...so for site-to-site traffic the remotes send
> that stuff out of the T interfaces.  For right now it is not a
> major problem as it is enough bandwidth to cover...but if the T
> goes down then I am hosed.
> 
> Obviously I could disable split horizon and it might all be
> peachy...but before I do that I figured I'd run this by you guys to
> see if there wasn't another alternative.  I couldn't find anything
> about p2p
> subinterfaces with SRP or anything like that...is there anything I
> can do besides disable SH?
> 
> Sorry I'm opti-clueless and haven't done a whole lot of RP
> lately...so any help would be much appreciated.
> 
> Thanks,
> 
> josh duffek    network engineer
> consultantjd16 at ridemetro.org
> desk:              713-739-4849
> mobile:            713-291-2365
> 
> 
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