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Thread Index [isp-bgp] RE : Re: "equal" routes
Affect best local-preference on netbloc you want with route-map: Ip prefix list NETBLOC permit x.x.x.x./xx le 32 Route-map BESTWAY permit 10 Description <bestway for x.x.x.x/xx> Match ip prefix NETBLOC Set local-preference 150 Route-map BESTWAY permit 20 Description <normal for others IP> Then show which path used for x.x.x.x/xx with show ip bgp ... Jacques VUVANT Network OPT New-Caledonia Phone : +687-267541 Fax : +687-278444 Mobile : +687-773121 Mail : Jacques.vuvant@opt.nc -----Message d'origine----- De : E.B. Dreger [mailto:eddy+public+spam@...] Envoyé : samedi 6 mars 2004 11:22 À : isp-bgp@isp-bgp.com Objet : [isp-bgp] Re: "equal" routes BP> Date: Fri, 05 Mar 2004 14:45:32 -0800 BP> From: Bill Pitz BP> Upstream #1 and Upstream #2 are both providing me with BP> advertisements for a netblock. The AS Paths are the same BP> length from both upstreams, so upstream #1 is getting chosen BP> because my peer at #1 has a lower IP address. However, I assume you're using "bgp bestpath compare-routerid", yes? Otherwise, newer IOS versions will use the route that was learned first. BP> Upstream #2 generally has better connectivity to this BP> particular netblock so I would like to give it priority. I BP> don't want to add a static route because I still want normal BP> BGP selection to take over in the event that my link to BP> Upstream #2 goes down. You could use a static route and still have failover. Set next-hop to the interface, _not_ the IP address. BP> What's the easiest way to accomplish this? Route maps. You're also probably better off working with AS_PATH or communities from your upstreams, but you can use whatever seems appropriate. Eddy -- EverQuick Internet - http://www.everquick.net/ A division of Brotsman & Dreger, Inc. - http://www.brotsman.com/ Bandwidth, consulting, e-commerce, hosting, and network building Phone: +1 785 865 5885 Lawrence and [inter]national Phone: +1 316 794 8922 Wichita _________________________________________________________________ DO NOT send mail to the following addresses : blacklist@... -or- alfra@intc.net -or- curbjmp@intc.net Sending mail to spambait addresses is a great way to get blocked. _______________ ______________ To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. ------------------------ANNOUNCEMENT--------------------------------- --------------------------------------------------------------------- - ISPCON Spring 2004 - Washington DC Hilton & Towers - - The ISP and WISP event - www.ispcon.com - - Informative. Substantive. Instructive - ---------------------------------------------------------------------- ---------------------------------------------------------------------- To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. ------------------------ANNOUNCEMENT--------------------------------- --------------------------------------------------------------------- - ISPCON Spring 2004 - Washington DC Hilton & Towers - - The ISP and WISP event - www.ispcon.com - - Informative. Substantive. Instructive - ---------------------------------------------------------------------- ----------------------------------------------------------------------
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