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From: jrc@hpdmd48.HP.COM (Jim Conrad)
Newsgroups: comp.sys.hp
Subject: Re: Anyone familiar w/ HP9000 series 520?
Message-ID: <15520007@hpdmd48.HP.COM>
Date: 11 Jul 90 14:58:35 GMT
References: <1990Jun27.215251.9406@sunstone.idbsu.edu>
Organization: Hewlett Packard - Boise, ID
Lines: 22

The 500s were a stack machine with a multi-processor kernel.  The old HP
Network Services (NS) have a number of problems that were corrected around
1986 or so when we came out with the ARPA services on the 300s.  These
problems included...

	1) Addresses were resolved with a neat but nevertheless
	proprietary protocol called PROBE --- not ARP.

	2) Use of a proprietary file transfer protocol called NFT
	instead of FTP.

	3) Use of 802.2/3 instead of EtherNET.

	4) Use of the TCP "push bit" to indicate end-of-message.

	5) No socket library, telnet, rcp, ...

While as far as I know, HP never implemented a "real" TCP/IP for the 500s,
a third party (Wollongong sp?) has done so.

Jim Conrad
jrc@hpbsrl