Article View: comp.protocols.iso
Article #1332Re: Stds Bodies NSAP's
From: Doug Montgomery
Date: Thu, 30 May 1991 23:41
Date: Thu, 30 May 1991 23:41
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4181 bytes
>HELP! I was the original poster of the NSAP thread. I have gotten many
>responses, but I finally got one that has me very, very confused.
>
>It seems that the CSMA ES and IS addresses have been stable for some time;
>however, I am dealing with Token Ring and thought I had the problem licked
>until today.
>
>Here are the addresses in question - but there is a *new* standard that has
>yet to be logged as official...and the addresses have changed!
I'm not sure what *new* standard you are refering too. Within the OIW these
addresses have been agreed to for some time. I'm not sure if they are in
the TA ISP for token ring, I thought that they were.
Below is the relevant text from the OIW stable agreements.
dougm
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| Doug Montgomery dougm@osi.ncsl.nist.gov |
| National Institute of Standards and Technology |
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Part 3 - Network Layer March 1991 (Stable)
12.2.1.4 of ISO 10039;
i) The multicast addresses corresponding to "All
Intermediate Systems on the Network" (ALL_ISN) and "All End
Systems on the Network" (ALL_ESN) shall default to the
following on IEEE802.3 and IEEE802.4 subnetworks:
1) ALL_ESN = 09-00-2B-00-00-04, ALL_ISN = 09-00-2B-00-
00-05;
2) It is understood that the hexadecimal octets shown
are transmitted onto the medium from left most octet to
right most octet. Within each hexadecimal octet the
least significant bit is transmitted first;
j) The multicast addresses corresponding to "All
Intermediate Systems on the Network" (ALL_ISN) and "All End
Systems on the Network" (ALL_ESN) shall default to the
following two functional addresses on IEEE802.5 subnetworks:
1) ALL_ESN = C000 0000 4000, ALL=ISN - C000 0000 8000;
2) It is understood that the hexadecimal octets shown
are transmitted onto the medium from left most octet to
right most octet. Within each hexadecimal octet the
most significant bit is transmitted first;
Editor's Note - Note that in the hexadecimal representation
defined in ISO 10039, these addresses would be:
1) ALL_ESN = 03-00-00-00-02-00
2) ALL_ISN = 03-00-00-00-01-00
NOTE - This notation presents the octet values such that the
least significant bit is that transmitted first.
k) The Error Report flag shall be set to zero (0) for NPDUs
sent as a result of invoking the QUERY Configuration
Function.
l) ISO 8473 PDUs multicast as a result of the Query
Configuration function shall use the Network Layer Protocol
ID (NLPID) assigned to ISO 8473.
m) An ISO 8473 PDU received as a result of another ES
having performed the Query Configuration function shall be
processed as follows:
12
Technical Details
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<9105302341.AA23250@warthog.ncsl.nist.gov>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!ucbvax!WARTHOG.NCSL.NIST.GOV!dougmShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!ucbvax!WARTHOG.NCSL.NIST.GOV!dougm From: dougm@WARTHOG.NCSL.NIST.GOV (Doug Montgomery) Newsgroups: comp.protocols.iso Subject: Re: Stds Bodies NSAP's Message-ID: <9105302341.AA23250@warthog.ncsl.nist.gov> Date: 30 May 91 23:41:07 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: National Institute of Standards and Technology (NIST) Lines: 81