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Dual CPU with two NIC

Posted on 2004-04-22
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Last Modified: 2013-11-09
Hey

I have a client who I’ve just installed a Dual Xeon Intel Server at. The Server has Two 100Mbps Network cards. I connect only one. My question is this – if I connect the other network card to the same hub or even a second hub, could it improve network performance?

Thanks.
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Question by:SimonQureshi
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corneliup earned 200 total points
ID: 10886896
You should connect the second card to a switch that is able to do trunking.
Or if the network cards are able to do this, you must configure the two cards to act as one NIC, through the driver. This only works if the two cards are the same and are designed to do this.
Otherwise it is not wise to connect the two cards to the same hub, or worst to different hubs, it will not improve performance, it will be chaos!

corneliup
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by:corneliup
ID: 10886906
If  the NICs are on the embeded, as far as I remember the intel driver is able to do trunking, I am not shure if it works with a hub....

corneliup
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by:SimonQureshi
ID: 10886912
Chaos eh?! Should be fun Cheers!!!
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by:corneliup
ID: 10886940
In the first msg. it should have been: connect both NICs to a switch that is able to do trunking
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by:SimonQureshi
ID: 10886963
yeah i thought so!, but u wouldnt need to plug both of them into one hub anyway, that defeats the whole purpose in the 1st place surely? just a thought.
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by:corneliup
ID: 10887049
If there are hubs, I think it doesn't matter because the hub don't care what is plugged in, the hub just forward every frame it receives on one port to all other ports. So if you plug the NICs in a hub without configuring them to work together, then you have good chance to receive on one NIC the frames from the other NIC, this not good! The switch is aware of what is plugged in his ports, he learns the MAC addresses of the devices and forwards the frames accordingly.
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