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Prakash_109945's avatar
Prakash_109945
Icon for Nimbostratus rankNimbostratus
Sep 08, 2011

Disable/Turnoff a TMM

 

I am a newbie to using F5. I have an iRule which upon processing certain control traffic prepares a map of data which I share across multiple virtual servers. However I see that this map data cannot be shared across two different TMMs. Is it possible to have this data shared across different TMMs? If it isn't, is there a way to disable/turnoff one of the TMMs? I am okay with all my traffic being processed by only only TMM. I have web access to the F5 console.

 

 

Thanks for your help.

 

 

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  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Sep 08, 2011
    Hi Prakash,

     

     

    You can use subtables to share data across TMMs in a CMP compliant way:

     

     

    http://devcentral.f5.com/wiki/iRules.table.ashx

     

    http://devcentral.f5.com/Default.aspx?tabid=63&articleType=ArticleView&articleId=2375

     

     

    You shouldn't have to for this, but if you want to disable CMP on a virtual server, you can use:

     

    b virtual < virtual_server_name > cmp < disable|enable >

     

     

    See SOL7751 for details:

     

     

    sol7751: Overview of Clustered Multi-Processing

     

    http://support.f5.com/kb/en-us/solutions/public/7000/700/sol7751.html

     

     

    Aaron
  • Prakash_109945's avatar
    Prakash_109945
    Icon for Nimbostratus rankNimbostratus
    Sep 08, 2011
    Thanks for a quick response.

     

     

    When I attempt to use subtables, I get an iRule error saying "undefined procedure: table". Looking up online, the documentation specifies version 10.1 support for table command. Mine's is version 9. Is subtables intrdocued in version 10 and not available before?

     

     

    I disabled cmp on my virtual server, but I still see that more than one TMM is processing my traffic. To be clear with the problem, I have a SIP TCP virtual server that prepares the map and a UDP virtual server that receives RTP traffic which uses this map. I have two RTP streams hitting F5 and I want both of them to be processed by the same TMM that processed the initial SIP traffic. I right now see that the packets for these two RTP streams are being processed by different TMMs.

     

     

    Thanks.
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Sep 08, 2011
    subtables were added in 10.1. Which version of 9.x are you running?

     

     

    For 9.x you can use the session command to share key value pairs across TMMs:

     

    http://devcentral.f5.com/wiki/iRules.session.ashx

     

     

    Aaron
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Sep 12, 2011
    Here's an example of using the session table to store values:

     

     

    http://devcentral.f5.com/wiki/iRules.CMP_v10_compatible_counters_using_the_session_table.ashx

     

     

    Aaron