[j-nsp] How does multihop eBGP work?

[Brian Raaen]

Mike,
	While your router will use BGP to determine its next hop destination, if that next hop is no directly reachable over l2 it will use whatever route it uses for that destination. Which as soon as you hand it off to the first router it will determine the patch after that, unless you use gre tunnels or some other type of tunneling environment.

---
Brian Raaen
Network Architect
braaen at zcorum.com

On Fri, Jun 24, 2011 at 05:33:20PM +0100, Mike Williams wrote:
> Hey guys,
> 
> I've got a situation I think I need multihop bgp for (logical-systems and 
> bridge-domains).
> However it bugs me deeply that I don't "get" multihop BGP.
> 
> My biggest bugbear is if my multihop-ebgp peer tells me he know the best way 
> to x.x.x.x, the packets I send towards him must be routed by intermediaries, 
> will those intermediaries use their tables and "hijack" my packets down their 
> bits of wet string through 15 other ASs and to the moon and back?
> 
> Thanks
> 
> -- 
> Mike Williams
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