2.1 Transport

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MSB_MSG_IND_PACKET packets are encapsulated in UDP packets if IP multicasting is used to deliver those packets. Otherwise, the MSB_MSG_IND_PACKET packets are encapsulated in TCP. All other MSBD Protocol packets MUST be encapsulated in TCP. The UDP and TCP packets MUST be encapsulated in the IP version 4 (IPv4).

There is no officially assigned TCP port for the MSBD Protocol; however, MSBD servers often listen on TCP port 7007 for client requests.