[HECnet] DECrepeater 900TM

[Paul Koning]

I found a manual online:
http://www.carnagevisors.net/dec94mds/detmminb.pdf

It's a repeater (a.k.a., hub) not a switch (a.k.a., bridge).   It's not
fancy at all.   A repeater takes incoming Ethernet transmissions and
repeats them on all the other ports unconditionally.   Also, a repeater
is by definition a half duplex device, so you have the CSMA/CD
(collisions and all that) of classic Ethernet.   A bridge receives a
packet and transmits it on the appropriate output port (if any), and can
be full duplex.

The 900TM is 10Base-T, so 10 Mb/s Ethernet -- not fast Ethernet
(100Base-T).   Suitable for old slow Ethernet devices...

	paul

-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On
Behalf Of Mark Wickens
Sent: Wednesday, October 28, 2009 11:22 AM
To: hecnet at Update.UU.SE
Subject: [HECnet] DECrepeater 900TM

Can someone explain to me what a decrepeater 900tm is? Is is a fancy
32
port 10MB switch?

Regards, Mark.
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