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Re: Fuzzy-layering and its suggestion

2002-09-05 21:36:46
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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