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Thread Index Re:[isp-bgp] How to properly utilize backup link in
Either is possible, depending on your goal. In my experience though, you get better performance by accepting a full table from each provider, as opposed to partials and defaults...Subject: Re: How to properly utilize backup link in ------------------------------------------------ But hey maybe we can match all prefixes AS_SEQUENCE ending in ASN^ to weed out routes local to AS'es? Or a combination of partial (ISP specific), and default routes might make it manageable.. Here is a real world example. I made a routing change a couple of weeks ago, because we had a performance problem reaching qwest via one of our peers Knowing this, I matched qwest's ASN 209 with a as-path access-list and prepended it on ingress. A clear ip bgp soft-in later, and I was off doing more interesting things... ip as-path access-list 9 permit _209_ route-map wvfiber-in permit 9 match as-path 9 set as-path prepend 19151 19151 If you had too much traffic on one provider in a load-sharing situation, you could follow the same logic, but match something larger than a single as, i.e. a prefix-list like 128.0.0.0/1 le 27 would match (roughly) half of the routes on the internet ejay hire p.s. I'm de-resubcribing to the non-digest so I'll stop breaking the threads by replying to the digest. :) _________________________________________________________________ Don’t just search. Find. Check out the new MSN Search! http://search.msn.click-url.com/go/onm00200636ave/direct/01/ 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. Copyright 2004 Jupitermedia Corporation All Rights Reserved. <- Previous Message | Next Message -> Thread Index |
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