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Joe_Francis's avatar
Joe_Francis
Icon for Nimbostratus rankNimbostratus
Jan 22, 2015

Active Sync and OWA CAS servers load balaning

Hello All

 

I am having an LTM running an Ver 10.2.1 , we have one Virtual server for both Active Sync and OWA access, The pool have 5 servers in total lisening on port 443.

 

Persistence - cookie Load balancing - Least connection (member)

 

The pool member stats are bit odd

 

Server 1 and Server 3 are having very low current connection i.e 200 - 300 connection

 

Where as the other servers has 1.5K - 1.8K

 

Please could some one provide some ideas to get the load balaning more effective

 

8 Replies

  • NikhilB's avatar
    NikhilB
    Icon for Employee rankEmployee
    Jan 22, 2015

    Use Least sessions LB algo and please let us know what you see.

     

  • Joe_Francis's avatar
    Joe_Francis
    Icon for Nimbostratus rankNimbostratus
    Jan 22, 2015

    Thanks Nikhil

     

    But I found a doc stating "Note: The Least Sessions methods are incompatible with cookie persistence." We use Cookie persistence

     

    • NikhilB's avatar
      NikhilB
      Icon for Employee rankEmployee
      Jan 22, 2015
      apologies, didnt realize you were using cookie persistence. Have you tried the default round robin and checked the results? https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/ltm-implementations-11-2-0/19.html?sr=43357999
  • NikhilB's avatar
    NikhilB
    Icon for Employee rankEmployee
    Jan 27, 2015

    Do you have snat configured? Assuming you also have one connect on? Have yo tried disabling persistence and seeing the results?`

     

  • Joe_Francis's avatar
    Joe_Francis
    Icon for Nimbostratus rankNimbostratus
    Jan 27, 2015

    Yes we do have snat configure , no Oneconnect profile.

     

    I havent tried removing the Cookie persistance - we are using an HTTP insert Cookie and Session cookie is CHECKED