This object configures the mode of OAM operation for this
Ethernet like interface. OAM on Ethernet interfaces may be in
'active' mode or 'passive' mode. These two modes differ in
that active mode provides additional capabilities to initiate
monitoring activities with the remote OAM peer entity, while
passive mode generally waits for the peer to initiate OAM
actions with it. As an example, an active OAM entity can put
the remote OAM entity in a loopback state, where a passive OAM
entity cannot.
Changing this value results in incrementing the configuration
revision field of locally generated OAMPDUs (30.3.6.1.12) and
potentially re-doing the OAM discovery process if the
h3cDot3OamOperStatus was already operational(9).