The value of tmnxDot3OamLoopbackLocalStatus indicates the local
loopback status of the OAM entity. This attribute allows the user
to manually set the local OAM entity loopback mode overriding the
802.3ah protocol for loopback. Setting the value to 'localLoopback'
can only be done if dot3OamLoopbackStatus is set to 'noLoopback'.
If dot3OamLoopbackStatus is any value other than 'noLoopback', the
changes to tmnxDot3OamLoopbackLocalStatus will have no effect. If
dot3OamLoopbackStatus is set to 'localLoopback', the OAM entity will
act as if its peer put the OAM entity into local loopback. This
entry allows the user to put an OAM entity into local loopback mode,
even if dot3OamLoopbackIgnoreRx is set to 'ignore'.