From: Bill Wu (bwu@xxxxxxxxxxxxx)
Date: Mon Aug 27 2001 - 10:37:11 GMT-3
I did this a few months ago. It worked. You need a route-map to change some
bgp properties before a NATed BGP peer sends updates out.
Bill.
-----Original Message-----
From: Padhu (LFG) [mailto:padhu@steinroe.com]
Sent: Wednesday, August 22, 2001 12:07 PM
To: 'ccielab@groupstudy.com'
Subject: RE: EBGP Peering over NAT
I wouldn't wanna do it either. I was looking at the some postings on EBGP
peering without statics etc weeks ago...so just was looking for "all
possible ways" policy, default (won't work though)..etc etc..
Very soon Cisco might have a warning sign on every rack..."Rated PG30"
"Pls do not try this at home or in any production networks !!!!!!"
Cheers,Padhu
-----Original Message-----
From: SALMON, MARK (SBMS) [mailto:MARK.SALMON@cingular.com]
Sent: Tuesday, August 21, 2001 7:06 PM
To: 'ccielab@groupstudy.com'
Subject: RE: EBGP Peering over NAT
I am wondering why you would do it that way, I would understand if you were
hiding your private addresses from the internet and there were several
routers between r1 and r2. Anyway, you do not need to hide your addressees
as long as only r1 and r2 are seeing them. You would need to use some kind
of IGP (static etc) to ensure reachability and the neighbor update source
loopback x command must be on both sides. The only time you would want to
use the non directly connected interface is if you have multiple connections
between each EBGP peer and you want to load share.
Mark Salmon
Sr. WAN Engineer Great Lakes Region
Cingular Wireless
2000 Ameritech Center Drive 3F07B
Hoffman Estates IL 60195
Voice: (847)765-3999
Pager: (847)992-0458
Email: mark.salmon@cingular.com
-----Original Message-----
From: Padhu (LFG) [mailto:padhu@steinroe.com]
Sent: Tuesday, August 21, 2001 3:22 PM
To: 'ccielab@groupstudy.com'
Subject: EBGP Peering over NAT
Is there anyone doing EBGP peering over NATed address ? I don't think its
possible. But just wondered if anyone has got this working.Thanks.
L0---R1-S0-----S0--R2----L0
EBGP peering between the loopbacks with NATing on the connected serial
interface.
Loopback as inside and serial as outside.
Cheers,Padhu
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