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jaimes_39948's avatar
jaimes_39948
Icon for Nimbostratus rankNimbostratus
Aug 02, 2012

GTM iRule To Load Balance DNS Resolution

Greetings,     I am an iRule newbie who inherited the administration of a GTM. I have an application request which requires the GTM to load balance the DNS resolution of a URL between (2) web se...
application delivery
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iRules
dlg_23340's avatar
dlg_23340
Icon for Cirrus rankCirrus
Aug 03, 2012
jaimes, that's a pretty strange load balancing method, but you can get the third octet of a client's LDNS with getfield. Something like this would do what you want: 


when DNS_REQUEST {
  if { [getfield [IP::client_addr] "." 3] < 128 } {
    pool poolA
  } else {
    pool poolB
  }
}