Dear All,
Two days back my entire network was behaving in unusual ways.
When is connect to core switc(4506e) through console, i found following -
00:06:51: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:52: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:54: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:56: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:58: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:00: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:02: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:04: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:06: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:08: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:10: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:12: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:14: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:17: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:18: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:20: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:22: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:24: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:27: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:28: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:30: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:32: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:34: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:36: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:38: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:41: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:42: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:44: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2 00:06:51: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:52: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:54: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:56: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:06:58: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:00: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:02: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:04: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:06: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:08: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:10: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:12: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:14: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:17: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:18: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:20: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:22: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:24: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:27: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:28: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:30: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:32: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:34: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:36: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:38: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:41: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/2 and port Gi4/3
00:07:42: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
00:07:44: %C4K_EBM-4-HOSTFLAPPING: Host 02:26:9E:DA:E9:C3 in vlan 1000 is flapping between port Gi4/3 and port Gi4/2
Please advise. Also when i try to find mac ID 02:26:9E:DA:E9:C3, i couldn't find it in mac address finder
