[135273] in North American Network Operators' Group
RE: Dual Homed BGP for failover
daemon@ATHENA.MIT.EDU (Randy McAnally)
Wed Jan 19 09:56:07 2011
From: "Randy McAnally" <rsm@fast-serv.com>
To: "Ahmed Yousuf" <ayousuf0079@gmail.com>,"'nanog group'" <nanog@nanog.org>
Date: Wed, 19 Jan 2011 09:55:29 -0500
In-Reply-To: <008901cbb7e4$f1feb860$d5fc2920$@gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Wed, 19 Jan 2011 14:26:32 -0000, Ahmed Yousuf wrote
> We're doing BGP to announce our PI space and make sure that our PI
> space is reachable through both ISPs in case one link goes down.
> This is the primary need to do the BGP here. Unfortunately my boss
> has requested that we make use of the capacity of both links, rather
> than pref traffic out of the higher capacity link.
Understood! you would _still_ take default BGP routes, I was implying more
along the lines (in cisco speak):
! Tweak as necessary to get a good balance
ip route 0.0.0.0 128.0.0.0 <peer1>
ip route 128.0.0.0 128.0.0.0 <peer2>
Set up SLA tracking on the peer IPs to retract the routes if either peer goes
down.
Either that or get more RAM on your router and go the BGP-only method.
-Randy
