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- Path: sparky!uunet!pipex!bnr.co.uk!stc!iann
- From: iann@bnr.co.uk (Ian Newman)
- Newsgroups: comp.protocols.iso
- Subject: Re: Correct use of the SEL field of NSAP addresses
- Date: 22 Dec 1992 10:08:57 GMT
- Organization: BNR Europe, New Southgate, London.
- Lines: 29
- Message-ID: <1h6pfpINNma2@bnsgd245.bnr.co.uk>
- References: <1992Dec17.084512.18550@trl.oz.au>
- NNTP-Posting-Host: bnsgs152.bnr.co.uk
-
- In article <1992Dec17.084512.18550@trl.oz.au> g.sawyers@trl.oz.au writes:
- >Hi folks,
- >
- >I have a question about the SEL field of OSI NSAP addresses. I
- >know that it is used within End Systems to select between different
- >transport entities, but are there any standard values for it?
-
- I think basically 0 and 255 are reserved values. The transport entity
- standards themselves would specify their NSAP SEL value, or they would
- be in the International Standard Profiles (ISP) - eg. GOSIP, etc.
-
- >For example, I seem to remember reading that 0 is used to address
- >the network entity itself (i.e. the Network Entity Title). Are there
- >values for, say TP0-4?
-
- 1 is used to address a ISO 8073 (Connection Oriented Transport Protocol).
-
- >Is there a standard or some other document that I should be looking
- >at?
-
- See above.
-
- Ian.
-
- --
- -----------------------------------------------------------------------------
- Ian Newman, BNR Europe Ltd., | iann@bnr.co.uk
- Transmission Software Development (Dept. GM21), | Phone : +44 (0)81 945 3638
- Oakleigh Road South, London N11 1HB, UK. | Fax : +44 (0)81 945 3116
-