How can I get the best performance from a 4 port 10G module considering each module only gets 28.8G throughput to the switch fabric?
When more than two ports of a 10-GbE module are in a linked state, ports 1 and 4 are statically mapped to share one 14.4 Gbps channel, while ports 2 and 3 are statically mapped to share the other 14.4 Gbps channel. If only one port in a given channel is in a linked state, then that port operates at wirespeed and the other port uses no bandwidth. If both ports in a given channel are in a linked state, then the 14.4 Gbps of bandwidth is balanced fairly between the two ports. For example, in an application where three ports on the module are needed and it is important to ensure that port 1 always has a full 10 Gbps available.
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