nanog mailing list archives
Re: Middle Eastern Exchange Points
From: "Patrick W. Gilmore" <patrick () ianai net>
Date: Wed, 8 Feb 2006 14:13:32 -0500
On Feb 8, 2006, at 12:30 PM, william(at)elan.net wrote:
"Transit" is when one entity sends the routes on to other organsiations, often with money involved.More commonly understood is that transit involves one ISP sending all of its BGP routes and allowing any traffic to be send from ISP A for for delivery to destination. However number of organizations (say cogent buying from verio) onlyget routes from certain specific ISPs that they can not otherwise reachwhich is again scenario "ISP A buys from ISP B to get to ISP C" but most people call this transit in this case... The reality is that for outside observer (especially if you look at the net as whole), there is no clear view that separates peering from transit and most correct is to consider everything to be peering with various differences being as to what kind of filters are deployed and where and how money is being exchanged.
Disagree.If you pass routes received from AS$I to AS$J, then you are providing transit to either $I or $J. Period. This is perfectly clear, even for an "outside observer".
What gets interesting is when you pay AS$N for access to only AS$N's prefixes. That looks like peering from the outside, but most people would call it transit.
However, that does not make all transit equal to peering. In fact, purchasing transit vary rarely involves BGP, so it should not be considered peering even as a special case.
If you want to define it as such, all BGP sessions are "peering sessions", but we are not talking on the protocol level here. There is nothing in the protocol about transit, and using protocol level definitions when talking about business relationships makes about as much sense as arguing over Mac OS vs. Windows when discussing wire transfers.
Also, just because it looks like something to an "outside observer" does not make it so. Transit vs. peering is a business relationship, and is defined by the parties involved, not the protocol used or how people outside view it.
-- TTFN, patrick
Current thread:
- Re: Middle Eastern Exchange Points, (continued)
- Re: Middle Eastern Exchange Points Joe Abley (Feb 07)
- Re: Middle Eastern Exchange Points Martin Hannigan (Feb 07)
- RE: Middle Eastern Exchange Points Frank Bulk (Feb 07)
- Re: Middle Eastern Exchange Points Bill Woodcock (Feb 07)
- Re: Middle Eastern Exchange Points Martin Hannigan (Feb 07)
- Re: Middle Eastern Exchange Points Bill Woodcock (Feb 07)
- Re: Middle Eastern Exchange Points Martin Hannigan (Feb 07)
- Re: Middle Eastern Exchange Points william(at)elan.net (Feb 07)
- Re: Middle Eastern Exchange Points Mikael Abrahamsson (Feb 08)
- Re: Middle Eastern Exchange Points william(at)elan.net (Feb 08)
- Re: Middle Eastern Exchange Points Patrick W. Gilmore (Feb 08)
- Re: Middle Eastern Exchange Points Michael Loftis (Feb 08)
- Re: Middle Eastern Exchange Points Joe Abley (Feb 07)
- Re: Middle Eastern Exchange Points Bill Woodcock (Feb 08)
- Re: Middle Eastern Exchange Points Stephen J. Wilcox (Feb 08)
- Re: Middle Eastern Exchange Points Joe Abley (Feb 07)
- Re: Middle Eastern Exchange Points Martin Hannigan (Feb 07)
- Re: Middle Eastern Exchange Points Joe Abley (Feb 08)
- Re: Middle Eastern Exchange Points Bill Woodcock (Feb 08)
- Re: Middle Eastern Exchange Points bmanning (Feb 08)
- Re: Middle Eastern Exchange Points Martin Hannigan (Feb 08)
- Re: Middle Eastern Exchange Points Michael . Dillon (Feb 09)