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Date:	Tue, 9 Jul 2002 21:18:01 PST7
From:	Steve Schiffman <schiffman@attglobal.net >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: Token Ring

Content Type: text/plain

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J. R. Fox wrote:
> P.S. if anyone is familiar with the JetDirect card, model J2555
> (an old model, minimally covered on the HP website), please let me know.
> It says "Token Ring" on it. I gather that is a somewhat obsolete networking standard?
> What are the implications for network printing, under Warp & Windoze, if one does not have Token Ring?

I am familiar with Token Ring and Token Ring JetDirect cards.

Token Ring is a wiring topology, just as ethernet, ATM, Frame Relay,
ISDN are wiring topologies. Token Ring can use CAT 3, CAT 5 UTP cable or
Type 1 STP cable. Token Ring uses a token passing technique on its
media, ethernet uses CSMA/CD technique. Token Ring speeds are 4 or 16
Mb/s. Ethernet is 10Mb/s (10baseT). Fast Ethernet is 100 Mb/s
(100baseT). Gigabit ethernet is 1000 Mb/s (1000baseT). Token Ring
supports any protocol that you want to use, e.g. Netbios/Netbeui,
TCP/IP, IPX/SPX, DLC, etc.

Routers can connect together Token Ring and ethernet networks.

Windows and OS/2 both will work with/on Token Ring.

The industry has gone the ethernet way mainly due to lower costs for
ethernet equipment and has now supassed Token Ring speeds with the
development of Fast and Gigabit ethernet. Token Ring, by design, is much
more efficient on heavly loaded networks, though at 16 MB/s can not
compete with the much greater total bandwith of 100 Mb/s and greater
ethernet soeeds.

If you do not have a Token Ring network, you can not use the Token Ring
interface that came with your printer. For $300 you can get an ethernet
MIO adapter for the printer. I am sure that you could find used MIO
adapters for less if you want to use the in the printer network
capability. Otherwise you are back to using a parallel printer cable to
a PC or to a parallel attachment external network print server.

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