[NTLUG:Discuss] New findings on cable modem issue

[Jack Snodgrass]

More info....

Most 10/100 'switches' are not really ethernet switches. They 
may say switch, but they are really hubs. If it says that it is
capable of full duplex ( 200mbit ) then it's a ( as I understand
it ) true switch. 

Linksys makes two identical looking 5 port 10/100 devices. One is 
a switch ( capable of full duplex on all ports ) and one is a hub. 
The switch is generally more expensive than the hub. I did get the 
switch version at bestbuy when it was on sale for $39.99 a while 
back. 

jack

  ----- Original Message ----- 
  From: Patrick Parks 
  To: discuss at ntlug.org 
  Sent: Friday, August 17, 2001 1:37 PM
  Subject: Re: [NTLUG:Discuss] New findings on cable modem issue


  On 17 Aug 2001 14:12:04 -0500, Mark Bickel wrote
> > 
> > A hub will operate at the lowest common speed, so if you have a 10mbs
> > cable modem and a couple of 100mbs computers, the hub will slow things
> > down to 10mbs (if the cable modem is active at the time).  A switch
> > operates at the best speed possible, so your two 100mbs computers will
> > talk back and forth at 100mbs, while the cable modem will still only
> > talk at 10mbs.
> > 
> > ...Ken
> 
> A switch does not necesarily have to provide dual-speed or auto-sense
> capabilities, although very many of them do. Also note that dual-speed
> hubs must buffer input from a 100baseT to a 10baseT NIC. When that buffer
> fills the hub must tell the faster NIC to stop transmitting. Throughput
> therefore will always be limited by the slower NIC.
> 
> Mark.Bickel at ericsson.com
>  
> 
> _______________________________________________
> http://www.ntlug.org/mailman/listinfo/discuss
-- Thanks, I think I understand the difference now, and I definately notice a difference!
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