Re: real world BGP question [7:3506]

2001-05-08 Thread Trey Webb
matter what the classful block. :-> > > Chuck > > -Original Message- > From: Brian [mailto:[EMAIL PROTECTED]] > Sent: Monday, May 07, 2001 5:05 PM > To: Chuck Larrieu > Cc: [EMAIL PROTECTED] > Subject:RE: real world BGP question [7:3506] > &

Re: real world BGP question [7:3506]

2001-05-07 Thread Andrew Smith
This is by no means the authoritative answer, but it's from my experience as a network engineer for an ISP that's been default-free since 1994. Here's an email from Sean Doren from Sprint who was either the person, or a significant part of the group who determined Sprint's BGP prefix filtering po

RE: real world BGP question [7:3506]

2001-05-07 Thread Chuck Larrieu
D]] Sent: Monday, May 07, 2001 5:05 PM To: Chuck Larrieu Cc: [EMAIL PROTECTED] Subject:RE: real world BGP question [7:3506] many providers filter based on the classful origin of the space. If the block is out of what was once class a or b space, the likelihood of a /24 getting filtere

RE: real world BGP question [7:3506]

2001-05-07 Thread Brian
many providers filter based on the classful origin of the space. If the block is out of what was once class a or b space, the likelihood of a /24 getting filtered out is fairly high. My previous employer did that. Brian "Sonic" Whalen Success = Preparation + Opportunity On Mon, 7 May 2001, Ch

RE: real world BGP question [7:3506]

2001-05-07 Thread Chuck Larrieu
Seems rather presumptuous of Cisco to speak for every ISP in the world In order to limit the number of routes being advertised on the internet, I believe it was considered "best current practice" to limit prefix length to /19 or shorter. ( can't find the RFC at the moment, but I recall it bei