> On 12/23/2011 8:12 AM, Francois Labreque wrote:

>>
>>>
>>> How? Depending on the way it's set up, it can cause major problems with
>>> the switch. Disconnect one of the patch cords and see if performance
>>> improves. If it does, you had a loop between the two switch ports, and
>>> the two NICs in your server. Either reconfigure your NICs to use
>>> fail-over, or make sure "spanning-tree" is enabled on the switch ports
>>> facing the server. Keep in mind that by doing that you will lose your
>>> 2Gbps aggregation speed and the second NIC will only be there to provide
>>> a host-stanby.
>>>
>>
>> And by that, I mean "hot-standby". I Should have proof-read...
>>
>
> I picked up on that - is there a 'safe' setup that would allow ganging
> of ports like I have?
>
>

Look into LACP (IEEE 802.3ad Link Aggregation Control Protocol).  Both 
your NICs and the swith need support it (and be configured for it, 
obviously!)  Cisco also has proprietary equivalents (EtherChannel and 
PAgP) that are sometimes supported by third party hardware.


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