OVN northbound and southbound Databases both have RAFT terms. See here for more details: https://web.stanford.edu/~ouster/cgi-bin/cs190-winter21/lecture.php?topic=raft

Term values for each set (NB and SB) should be equal within a reasonable amount (<30s) of time during normal runtime.

If the term values deviate for a period of time, it may indicate database "split brain".