Next-Hop Attribute...

From: Victor Cappuccio (cvictor@protokolgroup.com)
Date: Tue Apr 25 2006 - 00:24:06 GMT-3


Hello Guys

I had configured this situation
http://www.ripe.net/ripe/meetings/ripe-40/tutorials/bgp-tutorial/sld020.html
just to understand a little bit more the next-hop attribute in 3 routers

As 200 R1 --- ebgp --- As 400 Sw2 ---- ebgp ---- As 300 Sw1

So I get this

Rack1Sw1#show ip bgp

Network Next Hop Metric LocPrf Weight Path
*> 10.1.1.0/24 164.1.18.1 0 400 200 i
*> 10.8.8.0/24 164.1.18.8 0 0 400 i

Reading 1772 Says

A BGP speaker can advertise any external border router as the next hop,
provided that the IP address of this border router was learned from one
of the BGP speaker's peers, and the interface associated with the IP
address of this border router (as specified in the NEXT_HOP path
attribute) shares a common subnet with the local and remote BGP
speakers. A BGP speaker needs to be able to support disabling
advertisement of external border routers.

But  I Just do get the wording used in the above sentence.

Could anyone please be so king in translating this in very basic level

Thanks Victor.



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