I noticed that one of our interface (1/1/7 member of lag4 on both VSX nodes) shows a different state (Out-of-Sync versus In-Sync) respectively if the show lacp interfaces multi-chassis is committed on Primary or Secondary node (approximately during the same time):
Primary reports (truncated output, reported only lag4(mc)):
Aruba-8320-1# show lacp interfaces multi-chassis
State abbreviations :
A - Active P - Passive F - Aggregable I - Individual
S - Short-timeout L - Long-timeout N - InSync O - OutofSync
C - Collecting D - Distributing
X - State m/c expired E - Default neighbor state
Actor details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Port Port State System-ID System Aggr
name id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 7 1 ALFNCD d0:67:26:49:b8:9e 65534 4
1/1/8 lag4(mc) 8 1 ALFNCD d0:67:26:49:b8:9e 65534 4
Partner details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Partner Port State System-ID System Aggr
name Port-id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 2 128 ALFNCD 98:be:94:66:18:30 32768 48879
1/1/8 lag4(mc) 6 128 ALFNCD 98:be:94:66:18:30 32768 48879
Remote Actor details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Port Port State System-ID System Aggr
name id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 1007 1 ALFNCD d0:67:26:49:b8:9e 65534 4
1/1/8 lag4(mc) 1008 1 ALFNCD d0:67:26:49:b8:9e 65534 4
Remote Partner details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Partner Port State System-ID System Aggr
name Port-id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 1 128 ALFNC 98:be:94:66:18:30 32768 48879
1/1/8 lag4(mc) 5 128 ALFNC 98:be:94:66:18:30 32768 48879
Secondary reports (truncated output, reported only lag4(mc)):
Aruba-8320-2# show lacp interfaces multi-chassis
State abbreviations :
A - Active P - Passive F - Aggregable I - Individual
S - Short-timeout L - Long-timeout N - InSync O - OutofSync
C - Collecting D - Distributing
X - State m/c expired E - Default neighbor state
Actor details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Port Port State System-ID System Aggr
name id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 1007 1 ALFNCD d0:67:26:49:b8:9e 65534 4
1/1/8 lag4(mc) 1008 1 ALFNCD d0:67:26:49:b8:9e 65534 4
Partner details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Partner Port State System-ID System Aggr
name Port-id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 1 128 ALFNCD 98:be:94:66:18:30 32768 48879
1/1/8 lag4(mc) 5 128 ALFNCD 98:be:94:66:18:30 32768 48879
Remote Actor details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Port Port State System-ID System Aggr
name id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 7 1 ALFOCD d0:67:26:49:b8:9e 65534 4
1/1/8 lag4(mc) 8 1 ALFNCD d0:67:26:49:b8:9e 65534 4
Remote Partner details of all interfaces:
------------------------------------------------------------------------------
Intf Aggregate Partner Port State System-ID System Aggr
name Port-id Priority Priority Key
------------------------------------------------------------------------------
1/1/7 lag4(mc) 2 128 ALFNC 98:be:94:66:18:30 32768 48879
1/1/8 lag4(mc) 6 128 ALFNC 98:be:94:66:18:30 32768 48879
Notice how lag4(mc) 1/1/7 Interface's state (N versus O) is reported as Remote Actor from the VSX Secondary:
Isn't that a little bit strange?
How is it possible that the very same Interface 1/1/7 is concurrently seen In-Sync (N) and Out-of-Sync (O)?
Logs of VSX Primary: NO logs related to 1/1/7.
Logs of VSX Secondary:
2019-03-28:13:49:20.447160|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFO, Partner state ALFNCD
2019-03-28:13:49:20.815111|lacpd|1313|LOG_INFO|AMM|-|LAG 4 set as VSX
2019-03-28:13:49:20.816062|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALIO, Partner state PLIO
2019-03-28:13:49:20.818323|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFO, Partner state PLIO
2019-03-28:13:49:20.826889|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFO, Partner state PLFO
2019-03-28:13:49:20.830274|lacpd|1309|LOG_INFO|AMM|-|Partner is detected for interface 1/1/7 LAG 4 : 65534,00:00:00:00:00:00. Actor state: ALFOE, partner state PLFO
2019-03-28:13:49:20.830413|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFOE, Partner state PLFO
2019-03-28:13:49:20.833512|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFOE, Partner state PSFO
2019-03-28:13:49:20.836760|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFOX, Partner state PSFO
2019-03-28:13:49:20.840133|lacpd|1310|LOG_WARN|AMM|-|Partner is out of sync for interface 1/1/7 LAG sport: 15. Actor state: ALFOX, partner state PSFO
2019-03-28:13:49:21.349742|lacpd|1309|LOG_INFO|AMM|-|Partner is detected for interface 1/1/7 LAG 4 : 32768,98:be:94:66:18:30. Actor state: ALFOX, partner state ALFNC
2019-03-28:13:49:21.349819|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFOX, Partner state ALFNC
2019-03-28:13:49:21.353090|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFO, Partner state ALFNC
2019-03-28:13:49:23.034047|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFNCD, Partner state ALFNC
2019-03-28:13:49:23.347832|lacpd|1321|LOG_INFO|AMM|-|LAG 4 State change for interface 1/1/7: Actor state: ALFNCD, Partner state ALFNCD
Any idea? Am I misunderstanding commands' outputs?