[j-nsp] Next hop self for BGP

[Chuck Anderson]

On Sun, Apr 25, 2010 at 11:30:08PM -0400, David water wrote:
> Hi All,
> 
> I guess there are multiple way of changing next-hop attribute to self. One
> write import policy with next-hop-self and apply under EBGP group, other is
> write export policy under IBGP group and other is at neighbor level.
> Anything else? Can some one describe it when and which one to use? In JNCIP
> book, it is as import under the IBGP group, I am still confuse what exactly
> are we doing there to avoid suboptimal routing via RR?

Changing next-hop to self as an import policy on an EBGP group won't 
work.  You'll end up changing the next-hop to yourself for the routes 
in your own local routing table, but you need to know the real, 
original next-hops at the PE router.