[rhn-users] SMB and RH7 / RH9

[James Puellmann]

You can manually set the speed/duplex of eth0 to 100Full by running "mii-tool -F 100baseTx-FD eth0" but I highly recommend against this - unless you can do the same to the other endpoint (switch/router/gateway - whatever's on the other end of the cat5).

Your NIC is probably autonegotiating to this 10mbit speed based on communications with it's other endpoint. You could force this to 100mbit, but unless you can turn off the autonegotiation on the other endpoint, you'll get errors.

For reasons beyond my own comprehension, "Manual 100mbit-FD" and "Autonegotiated 100mbit-FD" are not the same thing. If one endpoint is set to autonegotiate 100mbit and the other endpoint is _manually_ set to 100mbit, you will get frame errors and your transfer speeds will suffer. Maybe someone else can comment on *why* manual 100mbit and autonegotiated 100mbit are different - I don't get it - but I learned the hard way they don't mix well at all.

mnow wrote:
> OK used mii-tool, shows 10mbit
> I know the card is 100/10, how can I reset to 100mbit?
> 
> Thanks,
> Mark
> 
> ----- Original Message ----- 
> From: "Dan Wittenberg" <daniel-wittenberg at uiowa.edu>
> To: "Red Hat Network Users List" <rhn-users at redhat.com>
> Sent: Monday, June 28, 2004 1:30 PM
> Subject: Re: [rhn-users] SMB and RH7 / RH9
> 
> 
> 
>>mii-tool <interface>
>>or
>>ethtool <interface>
>>
>>depending on the card/driver one of these should work.
>>
>>Dan
>>
>>
>>On Sat, 2004-06-26 at 02:24, mnow wrote:
>>
>>>How might I check speed/duplex?
>>>
>>>Thanks,
>>>
>>>Mark
>>>
>>>
>>>----- Original Message ----- 
>>>From: "Daniel Wittenberg" <daniel-wittenberg at uiowa.edu>
>>>To: "Red Hat Network Users List" <rhn-users at redhat.com>
>>>Sent: Monday, June 07, 2004 1:22 AM
>>>Subject: Re: [rhn-users] SMB and RH7 / RH9
>>>
>>>
>>>
>>>>Probably first thing to check is make sure your speed/duplex is set
>>>>correctly.  Also run vmstat 5 and make sure cpu is good as well as
>>>>paging.
>>>>
>>>>Dan
>>>>
>>>>On Sun, 2004-06-06 at 23:02, mnow wrote:
>>>>
>>>>>I am using two different computers, one with RH7 and the other with
>>>>>RH9.
>>>>>The RH7 machine seems to be very slow at accessing the other network
>>>>>computers while RH9 sails along just fine.
>>>>>Any tips on speeding up the RH7 machine for network access?
>>>>>I need to keep the RH7 machine to run Interchange because of to many
>>>>>snafoo's with RH9's use of threads.
>>>>>
>>>>>
>>>>>Thanks,
>>>>>
>>>>>Mark
>>>>>
>>>>>
>>>>>
> 
> ______________________________________________________________________
> 
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>>>>
>>>>
>>>>
>>>>
>>>
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>>
>>-- 
>>===========================
>>Daniel Wittenberg
>>Senior Unix Admin
>>University of Iowa - ITS
>>
>>
>>
>>
> 
> 
> 
> 
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