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- Newsgroups: comp.dcom.lans.ethernet
- Path: sparky!uunet!spool.mu.edu!umn.edu!csus.edu!netcom.com!seifert
- From: seifert@netcom.com (Rich Seifert)
- Subject: Re: HELP: VAX to PC Communications questions?
- Message-ID: <1992Dec23.165631.5541@netcom.com>
- Keywords: VAX VMS BRIDGE ROUTER
- Organization: Networks & Communications Consulting
- References: <BznHHv.A33@world.std.com>
- Date: Wed, 23 Dec 1992 16:56:31 GMT
- Lines: 64
-
- In article <BznHHv.A33@world.std.com>, dlowe@world.std.com (Miller Lowe) writes:
- > In our office we have Three Netware Servers, A couple
- > of VAX and tens of PCs. We want to connect the PCs to the VAX
- > systems using a LAT terminal emulator such as SmartTerm 340.
- >
- > Here is the current cabeling picture;
- >
- > /-----\ /-----\ /-----\
- > | VAX | |MICRO| |MICRO|
- > | |12.1 | VAX | 12.2 | VAX | 12.3
- > \--+--/ \--+--/ \--+--/
- > | | LAN 'A' |
- > ----+-------+--------+---------------------+-----+--------
- > | DECNET |
- > | /---+---\
- > /--+---------\ | PC #1 |
- > | PC Running | \-------/
- > | PCBRIDGE |
- > \-------+----/
- > | LAN 'B' IPX, TCP/IP & DECNET
- > <-------+--------+------------------------+----------------->
- > | |IPX = FEEDBFOO
- > /---+---\ /-----+------\
- > | PC #2 | | NetWare |
- > \-------/ |v3.11 Server| "MOTHRA"
- > \-----+------/
- > IPX & TCP/IP | IPX = FEEDBOFF
- > <-----------+----------------------------+------------------>
- > | LAN 'C' Other Netware
- > /---+---\ Servers -->
- > | PC #3 | & LANs
- > \-------/
- >
- > I have connected PC #1 and logged into the NetWare Server MOTHRA
- > with no problem and according to the terminal program (which has a
- > LAT driver) documentatiom I should have no problem logging onto the
- > VAX systems from PC#1 or PC#2. I haven't installed the terminal
- > program yet.
- >
- > BIG QUESTION #1:
- > ----------------
- > How do I get PC #3 to process DECNET packets through the NetWare
- > server MOTHRA. While MOTHRA will pass TCP/IP or IPX I do not think
- > that it will pass DECNET even though it uses 802.3 Ethernet.
- >
-
- I do not believe there is any software (public domain or otherwise)
- which will make a NetWare server act as a DECnet router. You will have to
- either:
- -Put a DECnet router between LAN B and C, or
- -Put a bridge between LAN B and C with the capability of blocking
- (not bridging) IPX), to avoid the NetWare conflict.
-
- Note that your original proposal was to get LAT access to the VAXen
- from all the PCs. LAT is NOT DECnet---A DECnet router will NOT pass
- LAT traffic. LAT is a non-routable protocol, and must be bridged.
- This means that the second option is the only really viable one
- if what you want is LAT.
-
- --
- Rich Seifert Networks and Communications Consulting
- seifert@netcom.com (408) 996-0922
- (408) 996-2860 FAX
- "... specialists in Local Area Networks and Data Communications systems"
-