[Freeswitch-users] Bridge Failover

HI, is there a difference in fail over for a bridge from this: <action application="bridge" data="sofia/gateway/primary/dialstring|sofia/gateway/secondary/dialstring"/> Or just adding to bridges? <action application="set" data="continue_on_fail=true"/> <action application="bridge" data="sofia/gateway/primary/dialstring "/> <action application="bridge" data="sofia/gateway/secondary/dialstring"/> What is the best way for failover?