Hi ,
want to know exact root cause behind this issue .
%SW_MATM-4-MACFLAP_NOTIF: Host 5cf3.fc25.0746 in vlan 34 is flapping between port Gi1/0/23 and port Gi1/0/20
Jan 24 02:54:04.356: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00a1 in vlan 25 is flapping between port Gi1/0/18 and port Gi1/0/23
Jan 24 02:54:04.702: %SW_MATM-4-MACFLAP_NOTIF: Host 001a.646b.c876 in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:04.738: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00dd in vlan 25 is flapping between port Gi1/0/23 and port Gi1/0/18
Jan 24 02:54:04.738: %SW_MATM-4-MACFLAP_NOTIF: Host 1203.0100.0100 in vlan 25 is flapping between port Gi1/0/23 and port Gi1/0/18
Jan 24 02:54:04.843: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00e2 in vlan 25 is flapping between port Gi1/0/23 and port Gi1/0/17
Jan 24 02:54:04.875: %SW_MATM-4-MACFLAP_NOTIF: Host 5cf3.fc3b.4336 in vlan 34 is flapping between port Gi1/0/20 and port Gi1/0/19
Jan 24 02:54:05.064: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00b0 in vlan 25 is flapping between port Gi1/0/18 and port Gi1/0/17
Jan 24 02:54:05.153: %SW_MATM-4-MACFLAP_NOTIF: Host e41f.13b8.3878 in vlan 34 is flapping between port Gi1/0/3 and port Gi1/0/20
Jan 24 02:54:05.200: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.0016 in vlan 25 is flapping between port Gi1/0/23 and port Gi1/0/17
Jan 24 02:54:05.352: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00b2 in vlan 25 is flapping between port Gi1/0/23 and port Gi1/0/18
Jan 24 02:54:05.431: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.008f in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:05.546: %SW_MATM-4-MACFLAP_NOTIF: Host 0025.903e.597a in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:05.546: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00a2 in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:05.593: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00b3 in vlan 25 is flapping between port Gi1/0/18 and port Gi1/0/17
Jan 24 02:54:05.735: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.000b in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:05.934: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.0013 in vlan 25 is flapping between port Gi1/0/23 and port Gi1/0/18
Jan 24 02:54:05.981: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.25ac in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:06.191: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.0010 in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:06.191: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a4.00a3 in vlan 25 is flapping between port Gi1/0/17 and port Gi1/0/18
Jan 24 02:54:06.442: %SW_MATM-4-MACFLAP_NOTIF: Host 5cf3.fc25.04ee in vlan 34 is flapping between port Gi1/0/20 and port Gi1/0/19
Jan 24 02:54:11.575: %SW_MATM-4-MACFLAP_NO%SW_MATM-4-MACFLAP_NOTIF: Host 5cf3.fc25.0746 in vlan 34 is flapping between port
Need help to understand issue.Is their isssue with server NIC team Setting or spanning tree But mac flapping occuered on trunk and acess ports also .sometimes very critical ..Is their is any solution ????
IOS is C2960s-universalk9-122-55.se2.bin
Regards,
Danny
