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TMcGov_92811's avatar
TMcGov_92811
Icon for Nimbostratus rankNimbostratus
Jan 21, 2009

IRule to use Pool depending on Client source address

I need to add some more logic to an existing iRule, and I think I need to clean it up before doing so. I'm sure there must be a better way for me to do this. Basically, I just want to examine the client's source IP, and based on that, send them to a specific pool. Here's what I have now...how can I simplify this ?

 

 

when CLIENT_ACCEPTED {

 

switch [IP::client_addr] {

 

63.208.77.21 { pool http-Test-mediation }

 

166.90.79.2 { pool http-Test-mediation }

 

198.204.15.125 { pool http-Test-mediation }

 

198.204.15.126 { pool http-Test-mediation }

 

202.54.137.90 { pool http-Test-mediation }

 

203.99.192.0/19 { pool http-Test-mediation }

 

203.99.195.2 { pool http-Test-mediation }

 

203.99.208.0/23 { pool http-Test-mediation }

 

203.197.245.101 { pool http-Test-mediation }

 

203.199.245.10 { pool http-Test-mediation }

 

65.5.4.196 { pool alt-http-Test }

 

65.5.4.198 { pool alt-http-Test }

 

65.5.4.199 { pool alt-http-Test }

 

65.5.4.253 { pool alt-http-Test }

 

65.5.4.254 { pool alt-http-Test }

 

65.201.27.93 { pool alt-http-Test }

 

default { pool alt-http-Test-mediation }

 

}

 

}
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  • dennypayne's avatar
    dennypayne
    Icon for Employee rankEmployee
    Jan 21, 2009
    Hi,

    You'll want to use the matchclass command with a couple of class files (Data Groups in the GUI). Click here

    So if you build 2 class files, one called http-Test-mediation and the other alt-http-Test with the appropriate addresses, then use a rule like this: 

      
  when CLIENT_ACCEPTED {  
     if { [matchclass $::http-Test-mediation contains [IP::client_addr]]  } {  
        pool http-Test-mediation  
     } elseif { [matchclass $::alt-http-Test contains [IP::client_addr]]  } {  
        pool alt-http-Test  
     } else {  
       pool alt-http-Test-mediation  
     }  
  }

    then you should be able to update your class files without having to change the rule.

    Denny
  • TMcGov_92811's avatar
    TMcGov_92811
    Icon for Nimbostratus rankNimbostratus
    Jan 21, 2009
    I tried something similar but my syntax was wrong - Thanks this works great.
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Jan 22, 2009
    I think that hyphens in TCL variables (or class names) need to be bracketed or they'll be interpreted incorrectly:

     

     

     

    % set test-variable some_value

     

    some_value

     

     

    % puts $test-variable

     

    can't read "test": no such variable

     

     

    % puts ${test-variable}

     

    some_value

     

     

     

     

    It might be easier to use underscores instead of hyphens.

     

     

    Aaron
  • krishna_52361's avatar
    krishna_52361
    Icon for Nimbostratus rankNimbostratus
    Jan 01, 2013
    I have a doubt , is that a similar to Topology Load balancing in GTM

     

    Will this load the CPU of LTM or we can still use LTM for Source address Loadbalancing instead of GTM.