You could, for instance use MPLS LSPs back to your ingress PE routers
(providing of course you are happy for them to carry these prefixes in their
tables) such to ensure that two TE tunnels exist back to your egress PE and
then load share between them...
Dave.
[mailto:ecue...@fxcm.com]
Sent: 05 February 2010 12:33
To: Matthew Melbourne
Subject: RE: [c-nsp] Load-sharing with two links to the same ISP
Did you check out BGP multipath?
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094431
.shtml
or is the AS Path is different
Matthew Melbourne wrote:
On looking at this again, it appears that BGP Multipath only works
when the eBGP sessions are terminated on the same box.
The scenario here is two eBGP session to the same ISP, but terminating
on two different customer edge routers (with an iBGP session between
them).
,
Matt
-Original Message-
From: Erik Cuevas [mailto:ecue...@fxcm.com]
Sent: 05 February 2010 12:33
To: Matthew Melbourne
Subject: RE: [c-nsp] Load-sharing with two links to the same ISP
Did you check out BGP multipath?
http://www.cisco.com/en/US/tech/tk365
Hi,
What techniques are available to load-share traffic on two links (of
equal bandwidth) to the same ISP (same AS) given that BGP only enters
the best path into the RIB? We could announce our prefixes over both
links, but splitting the preferred path announcements over the two
links, either
use maximum-paths in BGP peering. With this you can add multiple routes in
the routing table as long as the routes you are getting from the same AS.
BUT once this is added it is applied to all BGP peers, not possible to do it
for some selected peers. If you have many neighbors on this router than
] Load-sharing with two links to the same ISP
Hi,
What techniques are available to load-share traffic on two links (of
equal bandwidth) to the same ISP (same AS) given that BGP only enters
the best path into the RIB? We could announce our prefixes over both
links, but splitting the preferred
