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NLB Unicast Terminal Server is not working after one of the node is turned off ?

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NLB Unicast Terminal Server is not working after one of the node is turned off ?

NLB Unicast Terminal Server is not working after one of the node is turned off ?

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  #1  
Old 18th August 2012, 16:16
Albertwt Albertwt is offline
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Question NLB Unicast Terminal Server is not working after one of the node is turned off ?
Hi People,

I’m having a connectivity issue with my current Terminal Server VM nodes connectivity on Windows 2003 Enterprise SP2, which has been successfully converged and deployed as Unicast NLB with the following configuration:

Hostname: TS1
IP: 10.1.1.150
IP2 NLB Enabled: 10.1.2.95
Host Priority: 1

Hostname: TS2
IP: 10.1.1.242
IP2 NLB Enabled: 10.1.2.96
Host Priority: 2

And I have already created the
Virtual Cluster name: TerminalServer.domain.com
Virtual Cluster IP address: 10.1.2.97

When both servers are ON, user will be randomly allocated to either TS1 or TS2

When the TS1 server is turned OFF
ping to TS1 is dropped obviously
ping to Virtual Cluster IP address is still OK
remote desktop is failed to connect / redirect to TS2 which it should have.

When the TS2 server is turned OFF
ping to TS2 is dropped obviously
ping to Virtual Cluster IP address is still OK
remote desktop is failed to connect / redirect to TS1 which it should have.

Previously it has worked before until one of the node was in error state (WBEM error 0x80041002) in rejoining the NLB cluster.

Any kind of help and assistance would be greatly appreciated.

Thanks
  #2  
Old 20th August 2012, 08:35
wullieb1 wullieb1 is online now
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Default Re: NLB Unicast Terminal Server is not working after one of the node is turned off ?
Moved to a perfectly good Terminal Services forum.
  #3  
Old 20th August 2012, 09:33
Albertwt Albertwt is offline
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Default Re: NLB Unicast Terminal Server is not working after one of the node is turned off ?
Thanks Wullie, hopefully someone here can help me diagnosing this issue.

Cheers.
  #4  
Old 20th August 2012, 17:53
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Default Re: NLB Unicast Terminal Server is not working after one of the node is turned off ?
Try removing both servers from the cluster and then recreate the cluster.
  #5  
Old 20th August 2012, 18:20
MVP yuval14 yuval14 is offline
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Default Re: NLB Unicast Terminal Server is not working after one of the node is turned off ?
Hi,

Please provide us the following information:

a. Network Switch configurations + vendor + model
b. What is the host type that used to host the VMs?
c. Is all the VMs run on the same host?
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  #6  
Old 20th August 2012, 18:51
Albertwt Albertwt is offline
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Default Re: NLB Unicast Terminal Server is not working after one of the node is turned off ?
Quote:
Originally Posted by joeqwerty View Post
Try removing both servers from the cluster and then recreate the cluster.
yes already, that is what happening after I rejoin the NLB cluster.
  #7  
Old 20th August 2012, 18:52
Albertwt Albertwt is offline
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Question Re: NLB Unicast Terminal Server is not working after one of the node is turned off ?
Quote:
Originally Posted by yuval14 View Post
Hi,

Please provide us the following information:

a. Network Switch configurations + vendor + model
b. What is the host type that used to host the VMs?
c. Is all the VMs run on the same host?
A. CISCO switch... (forgot the model).
B. VMware ESX 4.1
C. No they are different.
  #8  
Old 20th August 2012, 19:12
MVP yuval14 yuval14 is offline
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Default Re: NLB Unicast Terminal Server is not working after one of the node is turned off ?
Please review:

http://kb.vmware.com/selfservice/mic...rnalId=1006580

Also, I recommanded to use hardware load balance and not NLB.
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