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Answered Thread: FTP on IIS7 behind NLB

Last post 10-25-2009 12:43 AM by Sansom. 2 replies.

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  • 10-22-2009, 4:00 AM

    • amackan
    • Not Ranked
    • Joined on 09-22-2009, 8:01 AM
    • Posts 7

    FTP on IIS7 behind NLB

    Reply Contact

    Hi, we have 2 iis7 web servers that i need to configure for FTP. The servers are configured as a clusetr using windows Network load balancing, and the firewall directs all traffic to the virtual IP of this cluster.

    I have created the FTP site with user isolation. I have a shared folder on my DFS which is the home directory for both FTP sites, and the user then access his own folder. a user only accesses the ftp server once, so there is no chance of two users updating the same folder.

     

    I have tested both FTP servers from the internal land its all working. however if i try from the public ip, its very slow, and most times i get Error 423. if i take one of the nodes offline from within NLB then the performace is back up again. i have taken node 1 and 2 off line independently and on there own its all ok, its opnly when i have the LB enabled with both nodes active do i get a problem.

     

    Any ideas welcome.

     

    Thanks 

  • 10-22-2009, 10:42 AM In reply to

    Answered Re: FTP on IIS7 behind NLB

    Reply Contact

    Well, generally FTP we put it in MS cluster services rather NLB, this look like communication handshake handling between the NLB and client end. I can only ask you to ensure that the NLB affinity is set to single so that each session stick to one host until the end. If still the same then may need network folks to help sniffer the packet for more details.

    Recently I encountered lot of NLB issue regarding connection being reset by host, this is pure web NLB, and took us sometime to find out that it was due to new server nic card feature setting :)

     

    Cheers,
    Bernard Cheah

  • 10-25-2009, 12:43 AM In reply to

    • Sansom
    • Top 500 Contributor
    • Joined on 11-14-2006, 3:57 AM
    • Bangalore
    • Posts 22

    Answered Re: FTP on IIS7 behind NLB

    Reply Contact

    To configure an FTP site to handle requests sent to a virtual server, ensure that the FTP site is configured to listen to the IP address of the virtual server. You can do this by assigning an IP address to an FTP site.

     Check the following....might help

    http://technet.microsoft.com/en-us/library/cc778748(WS.10).aspx

    http://support.microsoft.com/kb/219285

     

    Cheers,
    Santhosh

    visit my blogs at
    http://blogs.msdn.com/sansom
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