`OperStatus` (GVL)

Link state of Ethernet port according to RFC 2863 ‘IfOperStatus’

Attributes:

qualified_only

InOut:

Scope	Name	Type	Initial	Comment
Constant	SYSETH_OPERSTAT_Up	`UINT`	1	ready to pass packets
	SYSETH_OPERSTAT_Down	`UINT`	2	down and not in a condition to pass packets
	SYSETH_OPERSTAT_Testing	`UINT`	3	in some test mode
	SYSETH_OPERSTAT_Unknown	`UINT`	4	status can not be determined for some reason
	SYSETH_OPERSTAT_Dormant	`UINT`	5	not up, pending state
	SYSETH_OPERSTAT_NotPresent	`UINT`	6	some component e. g. a hardware device is missing
	SYSETH_OPERSTAT_LowerLayerDown	`UINT`	7	down due to state of lower-layer interface(s)

OperStatus (GVL)