Timeline for Is it possible to remotely influence BGP localpref?
Current License: CC BY-SA 3.0
5 events
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| Jun 1, 2013 at 22:45 | comment | added | Ricky | As ytti said, AS_PATH tricks are at best a suggestion. At the end of the day, the local admin preferences will win. If I want traffic to a specific network to cross a specific link, it will; there is nothing the internet can do to change my routing configuration. | |
| Jun 1, 2013 at 19:22 | history | edited | Justin Seabrook-Rocha | CC BY-SA 3.0 |
added 5 characters in body
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| Jun 1, 2013 at 19:22 | comment | added | Justin Seabrook-Rocha | Correct! Thus the eternal struggle of traffic engineering, how to influence a network you have no relationship with. I should probably have said "most" instead of "all", but prepending and more-specifics are really the only two options that can really have an affect in this case. | |
| Jun 1, 2013 at 19:18 | comment | added | ytti | If customer A has transit from provider P1 and P2 and they prepend to P2. Then another customer B of P2 may local_pref routes received from P2 (maybe it's cheaper), i.e. prepending does not guarantee that all traffic will switch and there is no real way to guarantee this in BGP, apart from pulling the route from non-preferred or leaking more specifics to preferred partner, neither of which can be recommended. | |
| Jun 1, 2013 at 19:10 | history | answered | Justin Seabrook-Rocha | CC BY-SA 3.0 |