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Robert_47833's avatar
Robert_47833
Icon for Altostratus rankAltostratus
Jul 09, 2011

difference between set ::domain ".cjj.com" and $::domain

Hi,all   I am confused by global variable   see below   set :: domain "cjj.com"   set $::domain "cjj.com"   set static::domain "cjj.com"   I am confused by the type of global variabl...
application delivery
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iRules
hooleylist's avatar
hooleylist
Icon for Cirrostratus rankCirrostratus
Jul 11, 2011
Any variable set in RULE_INIT will be global in scope. So 'set ::domain "cjj.com"' and 'set domain "cjj.com"' if run in RULE_INIT will be equivalent. Both will demote the VS from CMP.

 

 

As Colin suggested, for variables which don't need to be changed over the course of a connection, you can use the static:: namespace. This gives you a variable which is global in scope but preserves CMP compatibility. You can get more info on CMP here:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/CMPCompatibility.html

 

http://devcentral.f5.com/wiki/default.aspx/iRules/static

 

 

Aaron