What I am thinking is,
R2R1R3R4
R1, R2, R3 are in one area, R4 another, on R1 neighbor R2 next-hop-self, on
R3 neighbor R1 next-hop-self.
When routes coming from R4, R3 will forward it to R1 with next hop as R3,
but when R1 (the Router Reflector) forward the routes to R2, it won't change
the next-hop address because it is IBGP, so when R2 receive the routes, the
next-hop should be R3.
Please let me know I am wrong, the IBGP router will change the routes anyway
once the next-hop-self is set.
Thanks
Wei
- Original Message -
From: "Druid"
To: "Wei Zhu" ;
Sent: Sunday, January 12, 2003 10:37 AM
Subject: Re: IBGP next-hop-self ? [7:60889]
> At 01:49 AM 1/12/2003 +, Wei Zhu wrote:
> >According to the document, IBGP won't change the next-hop address.
> >In this example, R1, R2, R3 are in AS100, R4 in AS200, R5 in AS300
> >
> > R1--R5
> > / \
> >/\
> > R2R3-R4
> >R1 is the RR, next-hop-self is enabled on R3(nei R1) and R1(nei R2 R3).
> >As what I think, the next hop on R2 for R4(AS200) should be R3.
> >But when I tried on IOS 12.1.5(10T), the next-hop on R2 is R1.
>
>
> which is correct, if I am reading it correctly. You have next-hop-self
> configured from R1 to R2. So all next-hops will be rewritten, including
> iBGP routes. If you only want to override eBGP routes, you can do this
> incoming on the external session, via a route-map.
>
>
> >Thanks
> >Wei
sh2\(:7kyf [iiz;( )l&!"\
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