Alcatel Unleashed

what this meaning


SAT MAR 11 07:47:38 2017 LINKAGG info LACP Port Leave - Reason: Actor 31 & Partner gone out of sync PDUs
SAT MAR 11 07:47:38 2017 LINKAGG info Aggregate Down . port: 1050 agg: 9
SAT MAR 11 07:47:38 2017 LINKAGG info LACP Link 31 -> 0 is OUT_OF_SYNC agg_id=9
SAT MAR 11 07:47:42 2017 STP info Topology changed on VLAN/STP id 2054
SAT MAR 11 07:47:42 2017 LINKAGG info LACP PDUs Miss Reason: Not received - Timeout expired
SAT MAR 11 08:22:37 2017 LINKAGG info Actor & Partner are not matched with lacp activity
SAT MAR 11 08:22:37 2017 LINKAGG info Actor & Partner are in SYNC with PDU exchange
SAT MAR 11 08:22:37 2017 LINKAGG info Aggregate UP . port: 1050 agg: 9

your port 1/50 is flapping. Check the cable.
regards
Silvio

There are 5 Minutes between down and up, so probably someone tripped over the cable