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- Number: F2TH072590U198
- Subject: Connecting Ethernet II and 802.3
- Date: August 2, 1990
- - - - - - - - - - - - - - - - - - - - - - - - -
-
- GENERAL
- INFORMATION: The diagram below is an example. We've got an existing
- "flat" network of 286 and 386 systems (w/ 802.3 packets).
- The customer is planning to add a NetWare for VMS server
- (using Eth II packets) and confuse this "big" network with
- packet types.
-
- If we add a NetWare 386 server (v3.1) to this network with
- 2 Ethernet cards, one using 802.3 and one using Ethernet II,
- then that server could communicate with both sides. The
- real question is if there were workstations that wanted to
- see ALL servers, could they use DOS ODI drivers and accept
- both 802.3 AND Ethernet II packets concurrently?
-
- Of course the two packet types would be coursing around the
- network but wouldn't they effectively ignore one another?
- Couldn't they both be saying they were the same network
- address?
-
- Any thoughts or arguments?
-
- -----------------------------------------------------------------------------
-
- If they haven't yet added the VAX to the wire, why not put
- two wires in? You could put two cards in one server and
- hang the VAX off it's own wire and only have to ECONFIG the
- one card. You would then route through that server for
- anyone needing the VAX. Otherwise, you may as well have
- only one card in each server and ECONFIG everyone. You're
- not going to have two cards in one server that will share
- the same internet address even though they may be sending
- different packet types.
-
- -----------------------------------------------------------------------------
-
- Unfortunately, under ODI, IPX will only bind itself to the
- first packet type defined in the NET.CFG file (this was done
- to save workstation memory). So you can't do it. But if
- they are using v3.1 in the file server, you can load the LAN
- driver twice on one card and have it support two packet
- types. That way they don't need to have two cards in the
- server.
-