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NLB timeout issues

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NLB timeout issues - 27.Jan.2009 1:57:09 PM   


Posts: 15
Joined: 23.Jul.2008
Status: offline
Finally bit the bullet this past weekend and brought the second server of my array online.  It went very smoothly aside from the fact that I had to downgrade the OS to Server 2003 x86.  Everything came up and is working... but, I am having timeout issues with client authentication, and I'm seeing tons of errors for Outlook Anywhere clients.  Strangely, I've only heard complaints for client sign on and how lengthy it is.  Nothing with Outlook clients.  Regardless, this afternoon, I shutdown one of the ISA servers to see if it improved the authentication times, and it did - dramatically.  The configuration is unihomed ISA boxes with a second NIC for Intra-Array communication.  They are not domain members and sit in a DMZ behind a CheckPoint Firewall.

Has anyone seen this before?  Any suggestions?

Post #: 1
RE: NLB timeout issues - 27.Jan.2009 5:47:59 PM   
Jason Jones


Posts: 4663
Joined: 30.Jul.2002
From: United Kingdom
Status: offline
Sounds like something is going wrong with NLB and client affinity is causing connections to be "flip flopped" between array members or connections are not being kept persistent.

What is the network setup in the DMZ? 

Maybe the following artcile may be worth a read to look for potential issues:





Jason Jones | Forefront MVP | Silversands Ltd
My Blogs: http://blog.msedge.org.uk/ and http://blog.msfirewall.org.uk/

(in reply to wilbudl)
Post #: 2

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