For ports in self-healing redundant groups, this
object describes this port's redundant state.
The value notSupported(1) indicates this object is
unused for this port.
The value standby(2) indicates that traffic is not
currently routed through this port.
The value active(3) indicates that this port is the
selected channel for passing data traffic.
This object may be used to choose which port in a
redundant group is active. That selection may be
overridden by the system as appropriate, such as
the link going down, or a preferred port coming up.
The values (4) through (6) are deprecated. They will
no longer be reported by the Agent, and attempts to
set them should be rejected with the SNMP error
badValue(3).