Patent ID: 8487779

Claim:
An electronic mode for use as a subsea electronic module for an underwater fluid extraction well, comprising: a housing; a first and a second local area network established within housing to enable communication within the electronic module, the first and second local area networks being segregated to provide redundancy, the first and second local area networks each including a plurality of interfaces with components of the networks; a switch contained within the housing, the switch operable to manage and route traffic on the first and second local area networks; and a plurality of bays contained within the housing, wherein: each of the plurality of bays contains a plurality of electronics cards and first and second Ethernet switches, each of the first and second Ethernet switches in each of the plurality of bays includes a first port, a second port and a plurality of additional ports; in each of the bays, the additional ports of the first Ethernet switch contained within the respective bay are coupled with respective ones of the electronics cards also contained within the same bay to provide connectivity with the first local area network; in each of the bays, the additional ports of the second Ethernet switch contained within the respective bay are coupled with the respective ones of the electronics cards also contained within the same bay to provide connectivity with the second local area network; the first port of the first Ethernet switch of a first bay of the plurality of bays is coupled with the first port of the first Ethernet switch of a second one of the plurality of bays; and the second port of the second Ethernet switch of the first bay of the plurality of bays is coupled with the second port of the second Ethernet switch of the second one of the plurality of bays.