home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.os.ms-windows.misc:5799 comp.dcom.lans:2038
- Newsgroups: comp.os.ms-windows.misc,comp.dcom.lans
- Path: sparky!uunet!usc!elroy.jpl.nasa.gov!grian!alex
- From: alex@grian.cps.altadena.ca.us (Alex Pournelle)
- Subject: Re: W4Wg vs. ARCnet vs. NetWare?
- Message-ID: <1992Dec30.013717.20847@grian.cps.altadena.ca.us>
- Organization: College Park Software, Altadena, CA
- References: <1992Dec23.022316.26708@grian.cps.altadena.ca.us>
- Date: Wed, 30 Dec 1992 01:37:17 GMT
- Lines: 78
-
- alex@grian.cps.altadena.ca.us (Alex Pournelle) writes:
-
- >I've sent a note to Microsoft about this subject but haven't heard back
- >yet (not surprising, since their FAX and letter unit is quite slow).
- >Basically, my question is, can NetWare 2.x and Windows for Workgroups
- >coexist on top of an ARCnet network? The W4Wg manual says no, but I've
- >also hear that W4Wg doesn't coexist with NetWare properly anyway, so I
- >thought I'd get everyone's experience.
-
-
- And this might help (thanks, Nathan!):
-
- It's my understanding that ARCnet is not supported because its
- protocol stack does not separate the Data Link Layer into LLC and MAC
- sublayers. It is precisely this that allows the NDIS drivers to
- support multiple protocols on a single card.
-
- >What kind of performance hit are you taking by running W4Wg vs. W3.1?
-
- Windows itself runs just as fast on my 386/40. If there is a
- performance hit, it's the lackluster network performance. W4Wg is
- not as fast as Novell. Fortunately, most of my access is to our
- Novell network; I use the W4Wg network mainly to share printers and a
- CD-ROM drive (which is slow anyways).
-
- For what it's worth, W4Wg is decent for *small* networks and for
- minimal peripheral sharing on larger networks. And yes, it is a shame
- that Microsoft hasn't found some way for ARCnet to run both NetWare
- and W4Wg simultaneously.
-
- For your reading enjoyment, I've attached the "official" Microsoft
- explanation from the W4Wg resource kit.
-
- Nathan
-
- ########## FROM W4WG RESOURCE KIT, PAGE 8-17 ##########
- ARCNET SUPPORT
-
- The Microsoft version of IPX (MSIPX) supports the Token Ring and
- Ethernet (both DIX and IEEE 802.2/IEEE 802.3) MAC media header
- formats. It does not, however, support the ArcNet media header
- format. Because of the differences in how NetBEUI and MSIPX transmit
- on ArcNet media, Windows for Workgroups and NetWare client software
- cannot share the same ArcNet network adapter card. An explanation of
- the differences is described in the following paragraphs.
-
- When an ArcNet card is used with Windows for Workgroups, the NDIS
- driver claims to be an Ethernet DIX+802.3 MAC and encapsulates a
- transport's request to send Ethernet packets in ArcNet packets. The
- ArcNet NDIS driver presents itself as an Ethernet driver to the
- transport and actually transmits the Ethernet headers across the
- network. The driver constructs a fake Ethernet address by putting the
- ArcNet card's address in the lower byte of the Ethernet address.
-
- Ethernet multi-casts are emulated by performing ArcNet broadcasts.
- This allows Windows for Workgroups to run cleanly over ArcNet.
-
- However, when an ArcNet card is used in a NetWare environment, the
- IPX.COM driver generates packets in a proprietary form--a general
- description of the algorithm used can be found in a supplement to the
- "Novell LAN Drivers Developers Guide."
-
- For additional information, consult the "3Com/Microsoft LAN Manager
- Network Driver Interface Specification Version 2.0.1," and the
- "Novell Standard Microsystems ArcNet Supplement" (a supplement to
- the "Novell LAN Drivers Developers Guide").
- ########## END QUOTE ##########
-
- -----------------------------------------------------
- | Nathan Silva | |
- | nathans@pacifier.rain.com | Is my 486 a "Quadium"? |
- -----------------------------------------------------
-
- --
- Alex Pournelle, freelance thinker
- Also: Workman & Associates, Data recovery for PCs, Macs, others
- ...elroy!grian!alex; voice: (818) 791-7979
- fax: (818) 794-2297 bbs: 791-1013; 8N1 2400/12/3
-