adding 1G ethernet to a 100M network

[ted leslie]

100gb/s ethernet?
i am just getting used to people talking 10gbe and considering it for home,
but its 1000$ for a "cheap" nic,
please tell me what nic and switch are you using for 100gb/s connectivity?
I know it exists but I thought that was strictly super computer cluster territory.
(and sell your house to buy a couple of 100gb/s nics).

tl

On Thu, 29 Jul 2010 14:38:49 -0400
CLIFFORD ILKAY <clifford_ilkay-biY6FKoJMRdBDgjK7y7TUQ at public.gmane.org> wrote:

> On 07/29/2010 12:01 PM, James Knott wrote:
> > D. Hugh Redelmeier wrote:
> >> My home ethernet is all 100M.
> >>
> >> I'm accumulating a few devices with 1G interfaces.
> >>
> >> I assume that I can add a 1G switch, connect it to one of my 100M
> >> switches, and connect the nearby 1G interfaces to the new switch.
> >>
> >> Does this cause any problems? Are there better ways to do this?
> >
> > Switches will automagically detect and configure for the correct speed.
> > You could have a mix of 10M, 100M and 1G on your switch without problem.
> 
> There is a caveat. At a colo facility recently, we installed a gigabit 
> D-Link switch figuring that it would "just work". The network 
> performance of any of the machines connected to that switch was abysmal 
> even though the colo facility had provided us with a 100Gbit/s 
> connection to their Cisco switch. Apparently, consumer grade switches 
> like the D-Link and others cannot auto-negotiate to the highest possible 
> rate if the other end isn't configured to auto-negotiate. The other end 
> was configured to be 100Gbit/s, full-duplex. The D-Link would fall back 
> to 10Mbit/s, half-duplex, thus explaining the poor network performance. 
> Replacing the D-Link with a Cisco (not Linksys) switch and setting it to 
> 100Mbit/s, full-duplex was the solution.
> -- 
> Regards,
> 
> Clifford Ilkay
> Dinamis
> 1419-3266 Yonge St.
> Toronto, ON
> Canada  M4N 3P6
> 
> <http://dinamis.com>
> +1 416-410-3326
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-- 
ted leslie <tleslie-RBVUpeUoHUc at public.gmane.org>
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