Article View: comp.protocols.iso
Article #33Re: Use of SELs in OSI stack
From: Matt Thomas
Date: Mon, 02 Nov 1992 19:29
Date: Mon, 02 Nov 1992 19:29
31 lines
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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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<1992Nov2.192906.8738@nntpd.lkg.dec.com>Path:
arc1-ca.pugleaf.net!sparky!uunet!pmafire!news.dell.com!natinst.com!cs.utexas.edu!sun-barr!ames!decwrl!pa.dec.com!nntpd2.cxo.dec.com!nntpd.lkg.dec.com!lkg.dec.com!thomasReferences:
<1992Oct31.162055.29247@nntpd.lkg.dec.com> <Bx3CtI.1pr@tridom.com>Show Full Headers
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Newsgroups: comp.protocols.iso Path: arc1-ca.pugleaf.net!sparky!uunet!pmafire!news.dell.com!natinst.com!cs.utexas.edu!sun-barr!ames!decwrl!pa.dec.com!nntpd2.cxo.dec.com!nntpd.lkg.dec.com!lkg.dec.com!thomas 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