Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!decvax!ucbvax!SEISMO.CSS.GOV!uucp From: uucp@SEISMO.CSS.GOV.UUCP Newsgroups: mod.protocols.tcp-ip Subject: Submission for mod-protocols-tcp-ip Message-ID: <8612161115.AA01261@seismo.CSS.GOV> Date: Tue, 16-Dec-86 06:15:08 EST Article-I.D.: seismo.8612161115.AA01261 Posted: Tue Dec 16 06:15:08 1986 Date-Received: Wed, 17-Dec-86 07:22:11 EST Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 33 Approved: tcp-ip@sri-nic.arpa Path: seismo!mimsy!mark From: mark@mimsy.UUCP (Mark Weiser) Newsgroups: mod.protocols.tcp-ip Subject: Re: Protcol Development on SUN 2 and 3 computers. Message-ID: <4760@mimsy.UUCP> Date: 16 Dec 86 07:39:39 GMT References: <8612152127.AA05241@spam.istc.sri.com> Reply-To: mark@mimsy.UUCP (Mark Weiser) Organization: Computer Sci. Dept, U of Maryland, College Park, MD Lines: 22 In article <8612152127.AA05241@spam.istc.sri.com> robert@SPAM.ISTC.SRI.COM (Robert Allen) writes: > > I'm wondering if anyone has attempted to develop other >protocols on Sun computers using the "open-architecture". From >initial inspection of the Sun document "Network Implementation" >it appears that one can provide different protocol routines at >various layers, and make use of the kernel hooks built into the >system, thus provideing socket-type interfaces for protocols other >than the currently supported TCP/IP and UDP ... > Actually, Suns open network architecture is just Berkeley 4.2bsd's architecture, which is not so open if you try to do a really different protocol, as we did with XNS. 4.3bsd Unix is much more amenable to different protocols, and we have (twice now) stripped out Sun's networking code and replaced it with the 4.3 code, in order to include 4.3's XNS support. -mark -- Spoken: Mark Weiser ARPA: mark@mimsy.cs.umd Phone: +1-301-454-7817 CSNet: mark@mimsy UUCP: {seismo,allegra}!mimsy!mark USPS: Computer Science Dept., University of Maryland, College Park, MD 20742