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Neeraj_Jags_152's avatar
Neeraj_Jags_152
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Jan 12, 2015

Remode Desktop not Load Balancing Round Robin

I have F5 - LTM with below h/w CPU Status Index Temp(degC) Fan Speed(rpm) 1 33 15913

 

Platform Name C112 BIOS Revision OBJ-0433-xx Build: 1.12.137.0 10/30/2012 Base MAC 00:23:e9:70:d2:c0

 

-- in partition called = scms_prod created one Virtual Server = Type Standard for VIP on port 3389 as per the document from F5 http://www.f5.com/pdf/deployment-guides/f5-microsoft-remote-desktop-services-dg.pdf and having two Nodes with SNAT and Persistance Profile is rdp and NO-iRule Method- Round Robin. But connection on Pool are not load balancing . what could be the problem and how to troubleshoot.

 

application delivery
availability
deployment
LTM
performance
virtualization

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  • Neeraj_Jags_152's avatar
    Neeraj_Jags_152
    Icon for Cirrus rankCirrus
    Feb 16, 2015
    Hi Stephan,   
any luck to get hold on this issue.   
when I see output of command - show /ltm persistence persist-records mode msrdp all-properties
sometime I see Client Address and sometimes I don't see ?

Sys::Persistent Connections
msrdp - VIP%2:3389 - NODE-1%2:3389
---------------------------------------------------
  TMM           0
  Mode          msrdp
  Value         PSMConnec
  Age (sec.)    21
  Virtual Name  /prod/PIM-PSM-MGT_3389_vs
  Virtual Addr  VIP%2:3389
  Node Addr     Node-1%2:3389
  Pool Name     /prod/PIM-PSM-MGT_3389_pool
  Client Addr   ::
  Owner entry

so at above Client Addr :: some time I see IP addresses and sometime not,or you can see for few connection I see entry blank but for few, IP address mentioned. Surprise

Neeraj Jagetia
    • StephanManthey's avatar
      StephanManthey
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      Feb 16, 2015
      Hi Neeraj, no follow-up with my client yet. So sorry, nothing new to contribute. Regarding your persistence table dump: The persistence table key ("Value") ist "PSMConnec". This is the key to look after when a new MS-RDP connection comes in. Is "PSMConnec" something user specific? If multiple clients will use the same key, they will all be forwarded to Node-1%2 (based on the provided persistence table entry. As you wrote in your previous reply, you modified the .rdp file to force the UserName to be send in the MSTSHASH cookie. Do you see in TCPDUMP a prefix of "PSMConnec" for the username? The F5 obviously only keeps the first 8 characters to persist on. Thanks, Stephan
  • Neeraj_Jags_152's avatar
    Neeraj_Jags_152
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    Feb 16, 2015

    Do you think if I should select - Default Persistence Profile -> NONE (instead rdp persistence profile)

     

    • StephanManthey's avatar
      StephanManthey
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      Feb 16, 2015
      Hi Neeraj, I´m wondering, if the Microsoft Session Broker has it´s own load balancing and persistence mode implemented. I really have no clue and noaccess to a test environment available to run some own tests, sorry. Thanks, Stephan
    • Neeraj_Jags_152's avatar
      Neeraj_Jags_152
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      Feb 24, 2015
      I have removed the MS-RDP persistence Profile from Virtual Server. and now load balancing working as expected. I am surprised, then what is use of MS-RDP profile ? F5 should respond.