When this object is read the current state is returned.
idle(2) indicates that there is no session binding table request
in progress.
When a read on this object returns inprogress(3) indicates that
a session binding table retrieval request is in progress.
Setting the value to start(1), will start a new session table
retrieval operation based on the filtering criteria.
complete(4) indicates that the session table has been retrieved.
Once the slbSessionInfoTable is read the state should be set back to
'idle' which frees the session table buffer and others can issue a
request command via SNMP.