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Article View: comp.protocols.iso
Article #33

Re: Use of SELs in OSI stack

#33
From: Matt Thomas
Date: Mon, 02 Nov 1992 19:29
31 lines
2058 bytes
In article <Bx3CtI.1pr@tridom.com>, sat@eng.tridom.com (Stephen Thomas) writes:
|>
|>I've been unable to get the official Phase V specs from anyone at DEC, but Martin
|>and Leben's text, _DECnet Phase V: An OSI Implementation_ seems like the next best
|>thing. On page 158:
|>
|>    The following values are two possible SEL field values used by Transport layer
|>    entities to identify the Transport entity within the ndoe to which a packet
|>    is destined:
|>    
|>      o  32. A packet whose PCI contains this SEL field value is a data or
|>         control packet sent to an ISO Transport layer entity in a DNA Phase
|>         V node.
|>         
|>      o  33. A packet whose PCI contains this SEL field value is a data or
|>         control packet sent to an NSP Transport layer entity.
|>
|>Question for Matt (or anyone else at DEC): Did Martin and Leben get the SEl
|>values backwards? Can you check and get us a definitive answer on this?

Consider my previous answer definitive.  I implemented NSP for DECnet-OSI
for ULTRIX (and DECnet-ULTRIX) and did lots of work on OSI Transport.

32 is for NSP, 33 is the default for OSI Transport.  Martin and Leben got it
backwards.
--
Matt Thomas                     Internet:   thomas@lkg.dec.com
DECnet-ULTRIX Development       UUCP:       ...!decwrl!thomas
Digital Equipment Corporation   Disclaimer: This message reflects my own
Littleton, MA                               warped views, etc.
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Message-ID: <1992Nov2.192906.8738@nntpd.lkg.dec.com>
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References: <1992Oct31.162055.29247@nntpd.lkg.dec.com> <Bx3CtI.1pr@tridom.com>

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From: thomas@lkg.dec.com (Matt Thomas)
Subject: Re: Use of SELs in OSI stack
Message-ID: <1992Nov2.192906.8738@nntpd.lkg.dec.com>
Lines: 31
Sender: thomas@mipsbx.lkg.dec.com (Matt Thomas)
Reply-To: thomas@lkg.dec.com
Organization: Digital Equipment Corporation
References: <1992Oct31.162055.29247@nntpd.lkg.dec.com> <Bx3CtI.1pr@tridom.com>
Date: Mon, 2 Nov 1992 19:29:06 GMT