Yup, AS prepend and BGP communities. Don't forget that you can selectively adjust those per net blocks you are advertising so net A comes in mostly in provider 1 and net B comes in provider 2 or some other variation. I didn't realize that when I first started doing BGP 15 years ago until someone mentioned it.
On Mon, Mar 22, 2010 at 1:29 AM, Muhammad Jawwad Paracha <[email protected]> wrote: > Hi, > > Agree with Jay, AS path prepending is one good option to influence inbound > traffic to load balance. Though you have to be precise with how many AS you > are prepending to exactly load balance. But I have seen in web hosting > environment that it sometime causes website user with problem of page not > loading properly. > > These things need to be planned,and slowly implemented. > > Regards, > Jawwad Paracha > IBM > > On Mon, Mar 22, 2010 at 10:09 AM, Jay Hennigan <[email protected]> wrote: > >> On 3/21/10 9:53 PM, Chris Gotstein wrote: >> > It's actually both, but i'm mostly concerned with inbound traffic. >> >> Inbound is trickier than out > > ound. Many carriers offer a list of BGP >> communities which can be used to influence how they treat your >> advertisements, either by manipulating local preference, prepending, or >> both. >> >> Many are listed here: >> >> http://onesc.net/communities/ >> >> but ask your upstreams to be sure. >> >> Make small changes slowly. Verify with external looking-glass sites to >> ensure that you're getting the results you want. >> >> >> -- >> Jay Hennigan - CCIE #7880 - Network Engineering - [email protected] >> Impulse Internet Service - http://www.impulse.net/ >> Your local telephone and internet company - 805 884-6323 - WB6RDV >> _______________________________________________ >> cisco-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/cisco-nsp >> archive at http://puck.nether.net/pipermail/cisco-nsp/ >> > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
