Switch pruning in a switch fabric bus chassis

A system comprising:

• a chassis comprising:
• a switch fabric bus;
• a plurality of slots configured to couple devices to the switch fabric bus;
• one or more switches comprising a plurality of switch ports coupled to the switch fabric bus, wherein the one or more switches are configured to perform a link training procedure to link-train with the plurality of slots;
• and
• a control unit configured to:
• (a) identify, based on results of the link training procedure, first switch ports of the plurality of switch ports that are routed to unused slots of the plurality of slots via corresponding first bus lanes of the switch fabric bus, and second switch ports of the plurality of switch ports routed to used slots of the plurality of slots via corresponding second bus lanes of the switch fabric bus;
• and
• (b) disable the first switch ports in response to identifying the first switch ports.

A non-transitory memory element storing instructions executable by a processor to:

• (a) identify first switch ports, of a plurality of switch ports, that are routed to unused slots of a plurality of slots via corresponding first bus lanes of a switch fabric bus, and identify second switch ports of the plurality of switch ports routed to used slots of the plurality of slots via corresponding second bus lanes of the switch fabric bus, wherein the plurality of switch ports are included in one or more switches;
• (b) disable the first switch ports in response to identifying the first switch ports;
• (c) do not allocate bus numbers to the first switch ports at least in response to disabling the first switch ports;
• and
• (d) allocate bus numbers to the second switch ports at least in response to identifying the second switch ports.