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Re: Global BGP community values?
>From mthe side of PRAGMATIC, such communities should be very usefull if 50 - 70 % of the big ISP follow them. It's possible only if this can be realised by existing control schemas (such as route-maps in CISCO), and should be easily if router vendors (just the CISCO again -:)) incorporate it as the embedded rules (just as NO_EXPORT this days - you can realise this behaviour by route-map, but usially you use embedded rules). It's just this year when most big ISP began to use such communities inside their own networks (or may be - 2 years: TELIA - this year; UUnet - last year; MCI - a few years; most Russion ISP, for example - 2 pr 3 years). But until now it is LOCAL communities - you can't decrease localpref GLOBALLY; and it caused the trigger effect in some cases. The first step should be some _VERY SIMPLE_ draft proposing new GLOBAL communities. On Tue, 5 Oct 1999, Peter Galbavy wrote: > Date: Tue, 5 Oct 1999 10:15:06 +0100 > From: Peter Galbavy <[email protected]> > To: Hank Nussbacher <[email protected]> > Cc: Vadim Antonov <[email protected]>, [email protected] > Subject: Re: Global BGP community values? > > > On Tue, Oct 05, 1999 at 10:32:02AM +0200, Hank Nussbacher wrote: > > I agree but then why didn't your draft make it to BCP or experimental RFC > > status? Perhaps if we do the community thing and demonstrate that there is > > a real world benefit, then we can revive your RFC draft and integrate the > > knowledge we gain into something that gets accepted and implemented a bit > > later on. > > Without wanting to enter into the pleasant politics that surround > "correctness" versus "pragmatism", I woule like to fall down on the > side of pragmatism in this case. It would take very little effort and > no protocol change to document a proposal with some standard > convenience values that can be seen as an informally agreed set of > global community values. > > Apart from an "always prefer this route if found" set of known values, > what others could be useful ? I know that some networks (EBONE from > memory) uses communities to stop exports at borders to certain > networks. Would there be any value is have a standardised way of > saying things like "don't export outside country/continent please" - > the request being understtod to be a courtesy request rather than a > demand ? > > Regards, > -- > Peter Galbavy > Knowledge Matters Ltd > http://www.knowledge.com/ > > Aleksei Roudnev, Network Operations Center, Relcom, Moscow (+7 095) 194-19-95 (Network Operations Center Hot Line),(+7 095) 230-41-41, N 13729 (pager) (+7 095) 196-72-12 (Support), (+7 095) 194-33-28 (Fax)