[58517] in North American Network Operators' Group
Re: Communities BCP [was: RE: BGP Path Filtering]
daemon@ATHENA.MIT.EDU (Charles H. Gucker)
Fri May 16 19:19:51 2003
Date: Fri, 16 May 2003 19:15:47 -0400
From: "Charles H. Gucker" <cgucker@cv.net>
To: Ejay Hire <ejay.hire@isdn.net>
Cc: nanog@merit.edu
In-Reply-To: <5B564A46C22FDB47A77C672D447D938CBC69C2@bnaw2kmsx01.bna01.isdn.net>
Errors-To: owner-nanog-outgoing@merit.edu
On Fri, May 16, 2003 at 04:45:11PM -0500, Ejay Hire wrote:
> The config bits that follow are from memory, so no guarantees of syntax
> accuracy. If anyone knows how I can have an Item matched multiple times
> in the route-map I would appreciate a reply. I.e. if a customer wanted
> to send xxxx:100 and xxxx:1, currently I would match on the xxxx:1 and
> the localpref change would not be applied. Thanks in advance to whoever
> comes up with this gem.
Actually you can accomplish this by using additive (but you would have to
make sure all "bad" communities are caught and the values reset to a valid 'standard'
route prior). This would allow you to know anything past this point is a valid,
acceptable community which would leave you with checking null0, then local pref's
and setting it properly..
I can supply a config, if folks are interested.
Thanks,
charles
