[geeks] Network Slowness

[Michael Parson]

On Thu, May 24, 2007 at 07:33:31PM +0100, Mike Meredith wrote:
> On Thu, 24 May 2007 10:30:58 -0400, Sridhar Ayengar wrote:
>> The speed LED for all three ports on the switch reads as gigabit, and 
>> ifconfig (on UNIX) and Network Connections (on Windows) report that
>> I'm connected at 1000Mbps.
>
> Also check (if possible) if both ends are autonegotiating full duplex;
> if you've got a mismatch there, you will get terrible performance.
> Gigabit (I think) is supposed to be full duplex only, but it's still
> worth checking.

>From IRC a few years back, now in my quotes file:

<archon> how do i tell if my solaris gig-e interface is operating
         at full duplex?  the fdx and hdx parameters are all 1
<pir> if you're doing 1000Mbit, you're doing full duplex
<archon> hmm.. why is there negotiation at all, then?
<rw-rw-rw-> Union rules.

-- 
Michael Parson
mparson at bl.org