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Forum Discussion

Wasfi_182818's avatar
Wasfi_182818
Icon for Altostratus rankAltostratus
Aug 23, 2016

iRule for directing traffic to an alternative GSLB pool based on the LDNS IP

Hi;   I have a DNS wideip with two Pools. I want to put an iRule where as if the source IP of the user's LDNS is not within subnet 10.0.0.0/8 then Pool2 is chosen. I want to bind this iRule to the...
application delivery
BIG-IP DNS
cloud
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Aug 23, 2016

This irule is one I use to answer with different pool based on source address:

F5 GTM : Split dns irule

when DNS_REQUEST {
  if { [IP::addr [IP::remote_addr] equals 10.0.0.0/8] \
     or [IP::addr [IP::remote_addr] equals 192.168.0.0/16] \
     or [IP::addr [IP::remote_addr] equals 172.16.0.0/12] } {
    pool "[DNS::rrname]_PRIV"
  }
}

The internal pool name must be: 

_PRIV