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Windows 2003 NLB issue

Posted on 2003-12-05
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Last Modified: 2010-03-18
My terminal services client keeps disconnecting when I am connected to the Virtual IP. If  I connect to the static IP, NO problem.

The server is configured with Win 2003 advanced server, 1 dual port NIC using teaming.  NLB is bound to the team IP.

I have no issues when NLB isn't used.

Thanks
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Question by:joejohns
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mapledrums earned 1500 total points
ID: 9888163
How is your Network Load Balancing configured ? What type of server (brand/model) are you using ? What NIC & software is used for the load balancing ?

It could be a few factors that are causing the problem that you're facing, the configuration of your NLB, software/system file corruption for the NLB, faulty NIC or motherboard, etc.

Try reinstalling the NLB software & NIC drivers (obtain the latest versions for both), change the NIC & I had an incident previously where the motherboard firmware was affected the NIC though it was an intermittant so I had to have the motherboard replaced. In the last case, the issue was documented in the technical support web page, so it might help to look through the manufacturer's tech support site to see if anyone else has the same issue.
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by:mapledrums
ID: 9888167
Another option would be to do a network monitor of the network connection if you've run out of options to troubleshoot. Something like Ethereal (www.ethereal.com) or Windows built-in network monitor.
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by:mapledrums
ID: 9888169
Btw, when you do NLB, both ports have to have the exact same settings, ie. speed/duplex have to be the same.
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Expert Comment

by:suattam
ID: 10175375
This white paper discusses how to plan and deploy a load balanced Terminal Server farm using session directory and how the session directory operates in a load balanced environment.

This MS article should help you set up TS on NLB correctly: -

http://download.microsoft.com/download/8/6/2/8624174c-8587-4a37-8722-00139613a5bc/SessionDirectory.doc

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