On Fri, Apr 2, 2010 at 6:33 AM, <[email protected]> wrote: > Message: 8 > Date: Fri, 2 Apr 2010 05:08:04 -0700 (PDT) > From: Bunny Singh <[email protected]> > To: [email protected] > Subject: [c-nsp] BGP Load Sharing > Message-ID: <[email protected]> > > Hi , > > I am using multihoming for my BGP with two ISP's. I have 10 mbps from one and > 4 mbps from > other ISP connecting to my single 3660 router. I am getting default route > from my both of the > ISP's and advertising /24 Public pool towards bothof the ISP's. For load > sharing i am doing path > prepending and put a weight for outbound traffic but not getting loadshare as > i want. > > Now i want to do the loadsharing and want to use near to 14 mbps. So is it > anyway to do the > loadsharing for outbound as well as inbound traffic. I have searched in > google but didnot > get perfect answer.
One (sort of ugly) way to do this is to is to make some larger AS's prefer one path outbound. You would create a route-map inbound so you can make this happen. This example shows a few ways, matching AS's or matching communities that your ISP sends you (check with them to see what communites they send and what they mean. ============================================ ! your bgp router bgp 9999 neighbor 1.2.3.4 route-map ROUTEMAP-1234-IN in ! sprint (1239), level3(3356), AT&T (4181) ip as-path access-list 7 permit ^1234 1239_ ip as-path access-list 7 permit ^1234 3356_ ip as-path access-list 7 permit ^1234 4181_ ! match community 321 from your 1234 neighbor ip community-list 60 permit 1234:321 ! anything access-list 20 permit any ! set metric of 3 for anything in as-path acl 7 route-map ROUTEMAP-1234-IN permit 10 match as-path 7 set metric 3 ! match community 321 as sent from AS 1234 route-map ROUTEMAP-1234-IN permit 20 match community 60 set metric 7 ! set metric 10 for the rest route-map ROUTEMAP-1234-IN permit 30 match ip address 20 set metric 10 ============================================ You would want to set up something similar for each of your bgp peers even if one of them only does the 'permit ip' to keep the metric of 10 as default for both. --Chris _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
