Forum Discussion

Larry_Dalton_53's avatar
Larry_Dalton_53
Icon for Nimbostratus rankNimbostratus
Apr 20, 2010

Persist uie question

Have an iRule that looks for an iPlanetPro Cookie and uses it to set persistance

 

 

persist uie $myLBCookie 1980

 

 

Question is will a pool member down take precidence over the persist statement, meaning if the pool member is down or goes down, will it still be directed to the down member before the timeout?

 

 

Is there a limit to the amount of sessions that LTM can remember?

 

 

We have a situation to where the VIP just quits, and the iRule

 

 

Larry Dalton
application delivery
dev
devops
iRules
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Apr 20, 2010
    Hi Larry,

     

     

    When a pool member is marked down, corresponding persistence entries seem to be removed from the persistence table. So when you use the persist command, the request will be load balanced and a new persistence record will be added.

     

     

    See this post for a recent discussion of the details:

     

     

    how to use persist lookup command

     

    http://devcentral.f5.com/Default.aspx?tabid=53&aft=55954&afc=1172528

     

     

    I don't think there is a hard coded limit on the number of persistence table entries that can be added. I think it's dependent on memory available. I'm not exactly clear on how much memory TMM allocates for persistence records or whether TMM will allocate more. Maybe someone can elaborate on this?

     

     

    Your last sentence was incomplete. Did you have another question?

     

     

    Aaron