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Article #1330

NIST/SP-500/177

#1330
From: Carlo Milono
Date: Fri, 31 May 1991 01:39
50 lines
2218 bytes
There is a new Stable publication from the OSI Implementors Workshop
that supersedes NIST/Special Publication 500/#177.  It is not, to my
knowledge, made a standard, but is stable.  

For those of us who must deal with 802.5 networks, including vendors
of Sniffer products, it changes the NSAP addresses for ES and IS in
the 802.5 arena.  It seems that IBM reserved too many bits, and in
order to accomodate OSI protocols, needed to change the Functional
address(es) to gain further address space.  

Luckily for many vendors, the standard states that such addresses must
be configurable; however, for performance purposes, some products had
implemented these addresses in some type of firmware (PROM/ROM).  There
is a rather extensive embedded base of OSI software based on TP4, with
perhaps the "Lion's Share" being based on the MAP/TOP spec.  I do not
have any information on whether MAP/TOP is in sync with the NIST.

Here are the proposed (stable) changes:

ALL_ESN 802.3

0900 2B00 0004

ALL_ISN 802.3

0900 2B00 0005

...these have been stable since early 1988, and adopted by MAP in 9/89.

ALL_ESN 802.5

WAS: C000 0008 0000   WILL BE: C000 0000 4000

ALL_ISN 802.5

WAS: C000 0010 0000   WILL BE: C000 0000 8000




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+--------------------------------------------------------------------------+
|                   Carlo Milono                                           |
|    Personal:    cmilono@netcom.com   or   apple!netcom!cmilono           |
| Hobbes: "Life in the Great Suburban Outback is certainly fraught with    |
|          peril."                                                         |
| Calvin: "If you'd seen it, you'd have been scared too."                  |
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From: cmilono@netcom.COM (Carlo Milono)
Newsgroups: comp.protocols.iso
Subject: NIST/SP-500/177
Keywords: NSAP, 802.5
Message-ID: <1991May31.013926.23892@netcom.COM>
Date: 31 May 91 01:39:26 GMT
Organization: Netcom - Somewhere in the S.F. Bay Area
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