From: Sean C (Upp_and_Upp@hotmail.com)
Date: Sat Aug 14 2004 - 17:45:04 GMT-3
Can someone explain this statement from the CD concerning set ip next-hop
peer-address:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fiprr
p_r/bgp_r/1rfbgp2.htm#wp1021368
I'm at the example:
In the following example, three routers are on the same LAN (with IP addresses
10.1.1.1, 10.1.1.2, and 10.1.1.3). Each is in a different autonomous system.
The set ip next-hop peer-address command specifies that traffic from the
router (10.1.1.3) in remote autonomous system 300 for the router (10.1.1.1) in
remote autonomous system 100 that matches the route map is passed through the
router bgp 200, rather than sent directly to the router (10.1.1.1) in
autonomous system 100 over their mutual connection to the LAN.
router bgp 200
neighbor 10.1.1.3 remote-as 300
neighbor 10.1.1.3 route-map set-peer-address out
neighbor 10.1.1.1 remote-as 100
route-map set-peer-address permit 10
set ip next-hop peer-address
I think I have the theory exactly backwards as I thought it would be setting
traffic destined for 10.1.1.3 with a next-hop of the peer-address - not FROM
10.1.1.3. The above description mentions that it is from 10.1.1.3. I'm lost
on the route-map being applied to traffic coming IN from 10.1.1.3 yet the
route-map is an 'out' route-map.
I'm learning this in conjunction with NMC Lab13.7
Thanks in advance, Sean
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