In a Geographic Redundant deployment the external server must be able to discover Presence Services in both data centers. During normal operations, for a given domain, the external server talks to a single node of one of the data centers (typically local data center). However, in the event of data center failure, it must be able communicate with one of the nodes in the other data center. To accomplish this, it is required to administer additional m * n DNS SRV records with lower priority to resolve _xmpp-server to the Avaya Breeze® platform Security Module IP address of other data center.

Please refer to Administering DNS SRV records for local Presence Services domains for general details on configuring such DNS SRV records.