CX312 ports

The CX312 provides the following external ports:
? One BMC serial port, which is used for logging in to the BMC CLI.
? One SYS serial port, which is used for local management, maintenance, and GE switching plane commissioning.
? Twenty-four 10GE optical ports or six 40GE optical ports, which are used for exchanging data with external networks.

The CX312 provides the following internal ports:
? Thirty-two 10GE ports, which are connected to half-width compute node slots 1 to 16.
? One 40GE port, which is used to interconnect the 10GE switching planes on switch modules in slots 1E and 4E or in slots 2X and 3X.
? Two GE ports, which are connected to the two MM910s respectively for communicating with the internal ports eth0 and eth2 on the MM910s.

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