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Forum Discussion

F5_324021's avatar
F5_324021
Icon for Cirrus rankCirrus
Oct 13, 2017

GTM Response for Virtual Server

Hello,   My scenario here is a GTM hosting the application with private IP addresses.   And i need the GTM to hold the external DNS queries,   Which means once an internet client requests ...
application delivery
BIG-IP DNS
Kevin_Davies's avatar
Kevin_Davies
Icon for Nacreous rankNacreous
Oct 13, 2017

Create an address datagroup where in each entry the private virtual server IP address is the name and the public NAT address for the virtual server is the value. Apply the following to the LTM virtual server that was created by GTM as the listener.

when DNS_RESPONSE {
  foreach rr [DNS::answer] {
    if {[DNS::type $rr] ne "A"} { continue }
    if {[class match [DNS::rdata $rr] equals private_vips]} {
      DNS::rdata $rr [class lookup private_vips]
    }
  }
}

This has to be implemented on every GTM in the sync group.