interruptions between a source in a first network and a destination in a second network are reduced by providing first primary and secondary nodes in the first network , and second primary and secondary nodes in the second network . first primary routes in the first network facilitate delivery of a first set of the data to the first primary node ; and a second set of the data to the first secondary node . inter - network routes between the first and second networks deliver the first and second sets of the data to the second primary node and the second secondary node . second primary routes in the second network facilitate delivery of at least one of the first and second sets of data to the destination . a selector within the second network selects one of the sets of data . route selectors select secondary routes in the event that a primary route is disabled .