Re: BGP RR Question

From: Bob Sinclair (bob@bobsinclair.net)
Date: Sat Dec 22 2007 - 11:13:36 ART


Nambi Appachigounder wrote:
> Hi All,
>
> I have a BGP question.Can someone please help me.
>
> 1) R1,R2,R3 and R4 are in AS 100.
> 2) R2 is RR and R1,R3,R4 are RR clients.
> 3) R5 is in AS 200.
>
>
> R1
> |
> |
> R2
> / \
> / \
> / \
> R3 R4
> \ /
> \ /
> \ /
> R5
>
> When R5 advertise advertises a network "X" to R3 and
> R4, how many bgp entries
> will we see on R1.(only the best or both?)
>
>

Great question Nambi,

Theory would tell me that R1 gets only one route. Assuming metrics are
equal, R2 would prefer the path through the router with the lowest
originator id (BGP RID). Have you labbed this up?

-- 

Bob Sinclair CCIE 10427 CCSI 30427 www.netmasterclass.net



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