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Here's the thing ...<br />
If you set the server NIC to 100/full, then you have to set the switchport to 100/full<br />
If you leave the server NIC at auto, then the switchport must be on auto<br />
If you set the switchport to 100/full, then you must set the server to 100/full<br />
<br />
If it works at auto/auto, then what is the issue?<br />
<br />

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Here's the thing ...
If you set the server NIC to 100/full, then you have to set the switchport to 100/full
If you leave the server NIC at auto, then the switchport must be on auto
If you set the switchport to 100/full, then you must set the server to 100/full

If it works at auto/auto, then what is the issue?



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It works at auto/auto but the switch port changes back to 100/full leaving the NIC at auto which causes the mismatch.<br />
I found a small blurb about some switches not able to negotiate link speed with the Intel Pro/1000 CT card. &nbsp;I swapped out the card and that seemed to work.<br />

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It works at auto/auto but the switch port changes back to 100/full leaving the NIC at auto which causes the mismatch.
I found a small blurb about some switches not able to negotiate link speed with the Intel Pro/1000 CT card.  I swapped out the card and that seemed to work.


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I have a Cisco 2950 switch. &nbsp;I have a port duplex mismatch between a port on the switch and a server. &nbsp;The NIC in the<br />
server is an Intel Pro/1000 CT Gigabyte card. &nbsp;It has the latest drivers dated 11/22/04. &nbsp; The port on the switch<br />
is set to 100/Full. &nbsp;This NIC doesn't like that setting and will only run, if I set both the port and NIC to auto.<br />
<br />
When I set the port on the switch to Auto, it will run for a couple of days, but eventually will set itself back <br />
to 100/full. &nbsp;Has anyone ever heard of this? &nbsp;<br />
<br />
Thank &nbsp;you
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I have a Cisco 2950 switch.  I have a port duplex mismatch between a port on the switch and a server.  The NIC in the
server is an Intel Pro/1000 CT Gigabyte card.  It has the latest drivers dated 11/22/04.   The port on the switch
is set to 100/Full.  This NIC doesn't like that setting and will only run, if I set both the port and NIC to auto.

When I set the port on the switch to Auto, it will run for a couple of days, but eventually will set itself back 
to 100/full.  Has anyone ever heard of this?  

Thank  you

Duplex mismatch - Switch changes port speed

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.