OT: Effective Speed of 10BaseT - test-drb@ccmp.vtda.org

14 Nov 1999

On Nov 14, 22:10, Eric Smith wrote:
...
  pete(a)dunnington.u-net.com (Pete Turnbull) wrote:
 > But are you running over 10baseT (or 10base2) all the way?  Zane's system
...
  > might take a fair performance hit because either
the hub or the switch is
...
   buffering
every packet and retransmitting it. 
 Oh, and I forgot to mention that a true "hub" (which in Ethernet terms
 is just a multiport repeater) does not buffer any packets.

 The newer so-called Dual Speed Hubs incorporate a two-port switch (which
 in Ethernet terms is a bridge).  They don't buffer packets between same-speed
...
  hosts, but will buffer packets between 10 and 100 Mbps
hosts. 
Which is exactly what I was referring to, since Zane described his system
as having 10Mb/s at one end, and 100Mb/s at the other :-)

-- 

Pete						Peter Turnbull
						Dept. of Computer Science
						University of York