Note Spine chips are referenced by the spine number and the switch chip identifier. Each spine module contains two switch chips (Switch chip A and B).
Port Statistics Field Descriptions
Port Name/Port Number:
Corresponds to external leaf module number/port number, spine module number/port number, and all interswtich links.
Link State:
Indicates whether the InfiniBand link associated with the physical port is up or down. Possible values are no state change, down, init, armed, active, and unknown.
Physical State:
Indicates whether the internal connection to the InfiniBand port is up or down. Possible values are No State Change, Sleep, Polling, Disabled, Training, Up, and Error Recovery.
Link Down Default:
Indicates the default down state as set by the subnet manager. Possible values are No State Change, Sleep, Polling, and Unknown.
Active Link Width:
Indicates the number of full duplex serial links that are currently being used on a port. The current bandwidth capability of a port is determined by multiplying this value by the Active Link Speed of this port. For instance a 4X DDR link has a bandwidth capability of 20Gb/s.
Note Values of 1X are possible in this field with 4X IB cables if poor cable connections or defective 4X IB cables are used.
Link Width Enabled:
Link Width Enabled is the allowed link width(s) that a port can arbitrate to. Normally, this defaults to the Link Width Supported value, but can be overridden by the subnet manager.
Link Width Supported:
Indicates the link width in terms of multipliers of 2.5 Gbit/sec full duplex serial links supported by the port.
Active Link Speed:
Indicates the speed of the full duplex serial link. This is either 2.5Gbps (single data rate, or SDR), or 5.0Gbps (double data rate, or DDR).
Link Speed enabled:
Link Speed Enabled is the allowed link speed(s) that a port can arbitrate to. Normally this defaults to the Link Speed Supported value, but can be overridden by the subnet manager.
Link Speed supported:
The supported link speed of the port. This could be 2.5Gbps (SDR), 5.0Gbps (DDR) or both.
Cisco SFS 7012 InfiniBand Server Switch Hardware Users Guide
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