Description: The value of umc1TopologyChangeSeqNum at the time that the snapshot was taken. This allows the management station to know if the links specified in the umc1TopologyLinkTable still matches the snapshot. If the value stored here matches that in the umc1TopologyChangeSeqNu , then the data in the tables match. If the tables match, then there is no reason to read the umc1TopologyLinkTable to reconcile any changes that have been made since the ACO operation was performed. If the tables do not match, then the links listed in the two tables will have to be reconciled by the management station.

The maximum value it can assume is 2,147,483,647. An increment, very time it has reached its maximum value, shall cause it to be reset to 1.