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Re: Fuzzy-layering and its suggestion

"vinton g. cerf" <vinton.g.cerf@wcom.com> Fri, 06 September 2002 04:36 UTC

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Date: Fri, 06 Sep 2002 00:30:57 -0400
From: "vinton g. cerf" <vinton.g.cerf@wcom.com>
Subject: Re: Fuzzy-layering and its suggestion
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this was a choice made long ago to increase by a small amount the efficiency of the representation of the two layers. Keep in mind that IP was split off of TCP in version 3 of the protocol. They were originally combined.

vint cerf

At 09:00 AM 9/6/2002 +0800, Jason Gao wrote:
>Well, I should have cited another instance. What the TCP checksum protects includes the pseudu-header which contains the source and the destination IP address. Transport address in TCP (and SCTP) contains IP address. Clearly the IP address is not stored in the transport layer header. IMHO it is not an instance of clear layering.

Vint Cerf
SVP Architecture & Technology
WorldCom
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