HA between GTM

Amr_Ali If you would like to have two GTMs in the same location be HA in an active/standby configuration it is possible but it is a big money sink to do such a thing since GTMs themselves are inherently HA when in active/active. You really should have two GTMs run as standalone GTMs in a sync group to keep their DNS configuration synced between them but respond to DNS queries individually. If you had a much high DNS traffic configuration even then you probably wouldn't place the GTMs in active/standby but rather just in a larger group of GTMs so they can all respond to queries and if one fails the rest will continue to respond while you replace the failed GTM. As JRahm stated his article should walk you through an active/standby setup but you really should have your user or group provide information that 100% supports the setup of active/standby GTMs rather than the normal standalone active/active setup that F5 recommends configuring.