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NIC Teaming or seperate subnet?

By buschman_007 ·
Okay so I'm trying to do some config changes to reduce network traffic between a few servers that seems to drag my entire LAN down.

the primary focus of this questions about setting up a pair of NICs. For this example, let's say I have Server A, Server B, Primary Gigaswitch and an optional Backbone Gigaswitch.

So a massive data transfer like a backup runs over the network Pulling info from ServerB to ServerA over the Primary Gigaswitch. When this happens all users experience a significant slow down in the LAN. Both Servers are Win 2K3 and have a pair of identical Intel 100Pro GigaNICs. But only one is up and running right now.

My options are these:

- Team the NICs together. Use Network Load Balencing to share the bandwidth between two GigaNICs. Then setup a VLAN in the Primary GigaSwitch and remove unneccessary broadcast traffic. If you feel this is the best method how should the NICs be configured to work together? I can figure out the VLAN, but am not sure on the proper way to configure the NICs for best performance.

- Setup NICs on seperate subnets. Have the secondary NICs go to a Backbone GigaSwitch. Then use some sort of internal routing to ensure only traffic destined for another server on the backbone is routed through the secondary NIC. Or perhaps IP filtering to insure only certain ports go through the backbone, like the ports Veritas uses. Again, if you feel this is the best option how would you configure the NICs in this scenerio?

- Have two NICs both going to the primary Giga Switch and with IPs on the same subnet, but use VLAN to seperate traffic. Again, if this is the option you feel best how would you config the NICs?

None of these options cost me anything extra since I have all the parts inhouse. Just looking for the best option to allow LAN traffic to maintain high performance in the midst of massive data transfer between Servers A & B. And then of course how do I setup the NICs in that option.


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