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2 – Operations and Administration
D000003-006 Rev. A 2-41
Q
2.2.9.1
Port Statistics Field Descriptions
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 Fabric 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.