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From: jon@CS.UCL.AC.UK.UUCP
Newsgroups: comp.protocols.tcp-ip
Subject: Ethernet Suffering
Message-ID: <8705070548.AA10268@ucbvax.Berkeley.EDU>
Date: Thu, 7-May-87 01:50:34 EDT
Article-I.D.: ucbvax.8705070548.AA10268
Posted: Thu May  7 01:50:34 1987
Date-Received: Fri, 8-May-87 05:42:33 EDT
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The figures here are approx:

Manchester University run a net of 60 odd suns. They have 10
diskless 3/50s per 3/260  server with a 400 Mb eagle.

Each server-client set has
it's own thin ethernet. All the servers are backboned on an
ethernet. with 4Meg on each diskless client, 8 Meg on server,
the servers and ethernet just about cope if no more than 5Meg
virtual mem is used in each
client (ie 1Meg swapping). I don't know whether the bottleneck
is ethernet or server cpu/disk speeds.

Most of the ether traffic is ND/NFS, which is much less a
respecter of bandwidths and delays than tcp traffic, and wreaks
havoc with bridges and gateways unless you handwind down the
read/write transfer sizes. Hence the client/server ratio and
separate ethers.

Does anyone know of any affordable ethernet/ethernet IP
gateway/subnet router that can take 8 Kbytes worth of IP back to back
from several (~10) hosts at once?

Jon