From: Howard C. Berkowitz (hcb@gettcomm.com)
Date: Tue Feb 25 2003 - 15:58:44 GMT-3
At 11:30 AM -0500 2/25/03, Peter van Oene wrote:
>At 09:59 AM 2/25/2003 -0500, OhioHondo wrote:
>>Howard
>>
>>I disagree with your "BGP is not an application" statement. The fact that it
>>uses TCP means it uses Layer 4. The fact that it uses TCP ports means that
>>it uses Layer 5 and it creates TCP sessions (Layer 6) with a communicating
>>partner.
>
>These discussions about which OSI layer an IP protocol fits into are
>really quite fruitless. Conformance with OSI terminology was not a
>design goal for BGP as far as I know.
While I reserve the right to be thinking about EGP rather than BGP-1,
I'd be tempted to say it was an anti-goal: the OSI solution to
interdomain routing was (mostly) IDRP [1]. That eventually went
away, when there was better coordination between the leader of the
ISO interdomain group (Yakov Rekhter) and the chair of the IETF IDR
WG (Yakov Rekhter). Yakov often simplifies things by using a maximum
of one personality at a time.
[1] (IDRP) Inter-Domain Routing Protocol, unfortunately pronouced as I-drip,
as distinct from:
(IRDP) Internet Router Discovery Protocol
(IDPR) Interdomain Policy Routing
(IDMR) Interdomain Multicast Routing
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