Ryan Novosielski wrote:
> I send this note every once in awhile, since I know around my workplace
> there is a lot of confusion over it.
>
> Both ends of a network connection must be either hard-coded to the same
> speed and duplex, or set to auto/auto. Any other combination will result
> in the end that is set to auto stairstepping down from fastest to
> slowest until it finds a comparable rate, and WILL use half duplex. So I
> suppose to adjust my comments a little, if you are using 100/half on one
> end and auto/auto on the other, that will work, but I'd say it's not a
> great habit to get into (and who uses half duplex on anything other than
> 10-base-T anyway?).
>
> Philip W. Dalrymple III wrote:
>   
>> Our problem turned out to be a network hardware problem, the port that the
>> SD was plugged into was at 100 not 1000 and maybe the server was at 1000 or 
>> the 
>> duplex was not matched.

We routinely hard code both servers and the ports they are connected to 
in our switches switches.

In my experience, Solaris servers typically manage negotiating alright, 
but we set the switch ports anyway. Alpha servers notoriously messed up 
autonegotiation and had to be hard coded to work reasonably well. We 
also had repeated problems with Windows servers. I resolved it on a few 
occasions, but since I was not the Windows admin, it kept getting put 
back and causing trouble which was always blamed on the network group.

Anytime there is a problem of this sort, check the switch port 
statistics, and check the configuration on the computer end and on the 
switch end.


---------------

Chris Hoogendyk

-
   O__  ---- Systems Administrator
  c/ /'_ --- Biology & Geology Departments
 (*) \(*) -- 140 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst 

<[EMAIL PROTECTED]>

--------------- 

Erdös 4



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