Howard, I'm glad you clarified this. In a later explanation I explained it exactly backwards! To those of you who read my exlanation and were confused, my apologies.
John ---- On Wed, 13 Feb 2002, Howard C. Berkowitz ([EMAIL PROTECTED]) wrote: > >John, > > > >So isn't that Local-AS means can only send routes within the local AS, > while > >no-export means only advertised to IBGP peers (which means advertised > to > >only local AS).. so aren't they the same thing - I'm still very > confused. > > > >Best Regards, > >Hunt Lee > >WebCentral > > local-AS is used in conjunction with confederations. It keeps > announcements inside one of the confederation AS. If you used > no-export, all the confederation AS would see the update, but nothing > outside the registered AS. There's a subtle distinction between true > eBGP and confederation AS to confederation AS eBGP. > > > > > > >""John Neiberger"" wrote in message > >[EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > >> From reading an FAQ on CCO: > >> > >> Community Description > >> > >> Local-AS: Use in confederation scenarios to prevent sending > >> packets outside the local autonomous system (AS). > >> > >> no-export: Do not advertise to external BGP (eBGP) peers. Keep > >> this route within an AS. > >> > >> no-advertise: Do not advertise this route to any peer, internal > >> or external. > >> > >> none: Apply no community attribute when you want to clear the > >> communities associated with a route. > >> > >> internet: Advertise this route to the internet community, and > >> any router that belongs to it. > >> > >> HTH, > >> John > >> > >> > >> ________________________________________________ > >> Get your own "800" number > >> Voicemail, fax, email, and a lot more > >> http://www.ureach.com/reg/tag > >> > >> > >> ---- On Sun, 10 Feb 2002, Cebuano ([EMAIL PROTECTED]) wrote: > >> > >> > Aren't these two acvhieving the same purpose? Please tell me > >> what i'm > >> > missing. > >> > Thanks. > >> > > >> > Elmer > >> > > >> > In the following example, routes that pass the autonomous > >> system path > >> > access > >> > list 1 have the community set to 109. > >> > Routes that pass the autonomous system path access list 2 > >> have the > >> > community > >> > set to no-export (these routes > >> > will not be advertised to any external BGP [eBGP] peers). > >> > > >> > route-map set_community 10 permit > >> > match as-path 1 > >> > set community 109 > >> > > >> > route-map set_community 20 permit > >> > match as-path 2 > >> > set community no-export > >> > > >> > > >> > In the following similar example, routes that pass the > >> autonomous system > >> > path > >> > access list 1 have the community > >> > set to 109. Routes that pass the autonomous system path > >> access list 2 > >> > have > >> > the > >> > community set to local-as > >> > (the router will not advertise this route to an eBGP peer > >> outside the > >> > local > >> > autonomous system. > >> > > >> > route-map set_community 10 permit > >> > match as-path 1 > >> > set community 109 > >> > > >> > route-map set_community 20 permit > >> > match as-path 2 > >> > set community local-as > >> [EMAIL PROTECTED] [EMAIL PROTECTED] > > ________________________________________________ Get your own "800" number Voicemail, fax, email, and a lot more http://www.ureach.com/reg/tag Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=35378&t=35378 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
