Hi guys, But keep in mind that 'prepend communities' are fragile: I decide by local preference whereto I send my traffic. Cheers, mh Le 30 oct. 2017 à 18:25, à 18:25, Leo Bicknell <bicknell@ufp.org> a écrit:
In a message written on Thu, Oct 26, 2017 at 01:54:17PM -0600, Clinton Work wrote:
I believe that Jason is asking about an ISP BGP community to prepend their AS when the BGP routes are received from the customer (not when
Yeah, I typoed my example, should have been:
There are paths:
1 2 3 5 1 2 4 5
If you prepend your ASN, you get:
1 1 2 3 5 1 1 2 4 5
No difference. If you send the ISP a prepend community for 3, you get:
1 2 2 3 5 1 2 4 5
And you just forced all traffic to the second, shorter path. For only customers that are dual homed to 3 & 4 without affecting other traffic.
-- Leo Bicknell - bicknell@ufp.org PGP keys at http://www.ufp.org/~bicknell/