NIC Teaming

I am sure that this has been asked before, but I cannot find a good solid answer.  I have an HP DL380g5 performance server that has two gigabit nics.  We have a very network intensive ERP application that is running on it & I am starting to see that there is some performance bottleneck because of the network.  We are running on an HP 5412zl switch with ALL clients at gigabit connections.  Right now I am only utilizing one of the two NICs on the server, so I am wondering if there is any way to increase network performance by plugging in the second NIC & teaming.  Won't my switch just turn off the second port because of Spanning Tree?  Has anyone done this to increase bandwidth? If that isn't an option, what are the next options for increasing network performance?

Thanks for your help!
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rustyrpageAsked:
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Paul SolovyovskySenior IT AdvisorCommented:
HP Team Nic

http://www.howtonetworking.com/Networking/nicteam1.htm.  

Doing this may work without the LACP because it may be using proxy so I would give it a try first.  If you don't see better throughput we'll see what we can do with the LACP.  Just remember that normal throughput is about max 50%-60% of max.


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rustyrpageAuthor Commented:
Sorry - stupid me - running MS Windows 2003 Enterprise server
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Paul SolovyovskySenior IT AdvisorCommented:
You can setup LACP on the switch for the two ports (link aggregation protocol).  When you team the NICS on the HP DL380 G5 you can them up as failover or load balancing. From memory if you setup the load balancing and LACP you can use both port with aggregate bandwidth.
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rustyrpageAuthor Commented:
Any documentation on how to do that on the switch & then how to properly team the NICs?
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lnkevinCommented:
so I am wondering if there is any way to increase network performance by plugging in the second NIC & teaming....

If you plan for load balancing configuration, you can simply plug your two NIC on the same switch, same network and configure teaming. Although there are two NICs, but you only use one IP address and one virtual MAC address. Load balancing is the only teaming configuration that adds more performance. Failover (fault tolerance) don't.

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rustyrpageAuthor Commented:
So I saw something in the HP network configuration that mentioned teaming...if I just enable it, then plug in the network cord, it will automatically increase the bandwidth by 30-40% you think?
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Paul SolovyovskySenior IT AdvisorCommented:
Give it a try, I think so. But you should baseline your current network throughput before you start
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lnkevinCommented:
If you load balancing configuration works, it should.

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