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smp_86112's avatar
smp_86112
Icon for Cirrostratus rankCirrostratus
Jun 23, 2010

switch statement, [IP::addr], and varying subnet masks

I have an irule that uses a bunch of if statements that I'd like to consolidate into a single switch statement: when HTTP_REQUEST { if { [IP::addr [IP::client_addr]/26 equals xxx.xxx.xxx.xxx] ...
application delivery
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devops
iRules
smp_86112's avatar
smp_86112
Icon for Cirrostratus rankCirrostratus
Jun 24, 2010
Thanks for your feedback. Interesting idea hoolio - I had the idea if inverting this logic floating around in my head, but I guess I never formalized it. And I think the switch statement might work. I don't like to use classes if I don't need to because I they are a bit obscure to my coworkers who aren't as comfortable managing LTMs as I am. Using a switch statement, the entire code is right there in front of you - in addition to that, I assume the iRule would be faster without the external reference.

 

 

I'll try this and post my results:

 


when HTTP_REQUEST {
  switch [IP::addr [IP::client_addr]] {
    "xxx.xxx.xxx.xxx/26" -
    "xxx.xxx.xxx.xxx/21" -
    "xxx.xxx.xxx.xxx/24" -
    "xxx.xxx.xxx.xxx/32" -
    "xxx.xxx.xxx.xxx/32" { pool [virtual name]_no-SM }
  }
}