Forum Discussion
tarsier_90410
Nimbostratus
Feb 12, 2010Is global memory shared across HA LTM's?
We are getting ready to buy a new pair of LTM's to replace our stand alone LTM, and I am trying to get ready to update our iRules before they arrive. Do global variable values fail over, or would the...
hoolio
Cirrostratus
Feb 15, 2010As Bhattman suggests, global memory isn't synched to the peer. I guess the benefit versus overhead doesn't justify it.
You can use 'info exists ::my_global_var' (Click here) to check if a variable exists before trying to use it. But it would probably make sense to just reset the connection if a required global variable doesn't exist (which is what should happen when you get a runtime TCL error trying to access a variable that isn't set).
Aaron
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