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From: guru@wuccrc.UUCP (Guru Parulkar)
Newsgroups: comp.protocols.tcp-ip
Subject: A couple of simple questions.
Message-ID: <8711210806.AA16639@wuccrc.UUCP>
Date: Sat, 21-Nov-87 03:06:48 EST
Article-I.D.: wuccrc.8711210806.AA16639
Posted: Sat Nov 21 03:06:48 1987
Date-Received: Mon, 23-Nov-87 06:58:48 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
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In the last few weeks, there has been a number of messages about PSN
version 7 release and a new end-to-end ARPAnet protocol. However, I
haven't seen any reference or RFC announcement which describes this 
protocol. Maybe, I missed it. Could somebody tell me if there is any
reference on that. Or is this protocol BBN's proprietrary. 

One question that I wanted to ask for a while is about the "connection 
oriented" nature of ARPAnet's link level (or PSN - PSN protocol). I 
believe this protocol is essentially a connection oriented which
means we have a situation where a connection less internet protocol
IP sits on the top of a connection oriented protocol. Is it possible
that in this situation the overhead of connection management does not
have good "payoffs" at IP level or layers above that ? I remember Dr. 
Dave Mills saying something on similar lines in one of his classes at
Delaware.  (Maybe, I misunderstood what he was trying to convey.)
I need to understand this issue better, and I would appreciate if
somebody could help me with this.

Thanks!

-guru parulkar               wuccrc!guru@uunet.uu.net or
Dept of CS                   parulkar@udel.edu
Washington Univ St. Louis