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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!sol.ctr.columbia.edu!ira.uka.de!fauern!uni-erlangen.de!not-for-mail
- From: unrza3@cd4680fs.rrze.uni-erlangen.de (Markus Kuhn)
- Newsgroups: comp.protocols.iso
- Subject: Re: X.25 header compression
- Date: 17 Dec 1992 16:17:36 +0100
- Organization: Regionales Rechenzentrum Erlangen
- Message-ID: <1gq5mgEINNfgi@uni-erlangen.de>
- References: <1992Dec16.162940.10991@nosc.mil>
- Reply-To: mskuhn@immd4.informatik.uni-erlangen.de
- NNTP-Posting-Host: cd4680fs.rrze.uni-erlangen.de
- Lines: 25
-
- gutman@nosc.mil (Lew Gutman) writes:
-
- >I am looking for information on X.25 header compression for slow links. Does
- >anyone know any vendors that supply X.25 products providing this feature or
- >any other feature which increases the efficiency of X.25 on slow serial or RF
- >links?
-
- Why this? X.25 uses 3 header bytes per data packet. What else to you want to
- compress? Where header compression would really make sense in the OSI
- world is the connectionless network protocol (CLNP). There each packet
- (even if it is only a VT keystroke) carries a complete NSAP pair and a lot
- of other stuff which could be removed in a locally connection orientated
- header compression system.
-
- BTW: I heard about plans, that V.42bis/LZBT will be included in LAPB, so you'll
- get compression for the whole PDU including the header! Has anyone more
- details on this?
-
- Markus
-
- --
- Markus Kuhn, Computer Science student -=-=- University of Erlangen, Germany
- Internet: mskuhn@immd4.informatik.uni-erlangen.de | X.500 entry available
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