[j-nsp] BGP Multipath

Mark Tinka mark.tinka at seacom.mu
Fri Jul 19 02:54:22 EDT 2013


On Friday, July 19, 2013 02:25:28 AM Payam Chychi wrote:

> Why not prepend the routes out of ur gigE? That way it
> becomes the backup link and u can turn down bgp anytime
> you want on the gigE without impact

Because many ISP's LOCAL_PREF the hell out of customer 
routes, where prepending would be ignored. However, this 
isn't always the case, so the OP can always try it.

If the OP's provider supports community signaling for 
LOCAL_PREF, I'd go with that and send communities to the 
upstream to use LOCAL_PREF to choose which link handles 
inbound traffic for the OP.

The OP can do the same on his end to influence outbound 
traffic from his network to the upstream.

Cheers,

Mark.
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