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From: stevens@hsi.UUCP (Richard Stevens)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re: SNA over Ethernet via NDIS
Summary: SNA over Ethernet for the RT
Message-ID: <493@hsi86.hsi.UUCP>
Date: 15 Jun 89 14:31:10 GMT
References: <8905301932.AA26903@saturn.acc.com>
Organization: Health Systems Intl., New Haven, CT
Lines: 28

In article <8905301932.AA26903@saturn.acc.com>, cam@SATURN.ACC.COM (Chris Markle acc_gnsc) writes:
> 
> Another question is how address resolution is (or will be) accomplished?

A little known IBM product is their SNA support over an Ethernet for the RT.
(I'm not an RT user and this information is dated January 87, so I have no
idea about its current status.)  I have no idea if this announced PC
product is meant to interoperate with this RT product.

In the manual "SNA Services Guide and Reference" for the RT AIX V2.1,
Appendix D gives the name services provided over an Ethernet.  (The manual
says "Ethernet" everywhere but the frames they diagram are all 802.3.)
They provide 4 services:

(1) Add Name Query.  You broadcast this to see if any other node has the
	name you want already registered.  Hummmm, sounds like Netbios ...

(2) Name Query Response.  The response to (1) if someone already has the name.

(3) Find Name Request.  You broadcast this to locate the physical address
	corresponding to an 8-byte name you want to contact.

(4) Name Found Request.  The response to (3) if the name is found.

	Richard Stevens
	Health Systems International, New Haven, CT
	   stevens@hsi.com
           ... { uunet | yale } ! hsi ! stevens