01-07-2019 08:23 PM - edited 03-08-2019 04:58 PM
Hi - i have 2 core switch Which is CoreA and CoreB , my CoreA is getting host flapping message.
8490397: Nov 14 11:00:46.086 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 04:D6:AA:31:9F:55 in vlan 27 is moving from port Te2/7 to port Te3/12
8490398: Nov 14 11:00:57.621 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 40:9C:28:45:61:8D in vlan 27 is moving from port Te2/8 to port Po1
8490399: Nov 14 11:00:59.110 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 40:9C:28:44:EE:26 in vlan 27 is moving from port Te2/7 to port Te3/11
8490400: Nov 14 11:01:01.946 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 04:4B:ED:1F:F7:7F in vlan 22 is moving from port Te3/1 to port Te2/12
8490401: Nov 14 11:01:06.054 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 04:4B:ED:1F:F7:7F in vlan 22 is moving from port Te2/12 to port Te3/1
8490402: Nov 14 11:01:07.627 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 40:9C:28:45:61:8D in vlan 27 is moving from port Po1 to port Te2/8
8490403: Nov 14 11:01:21.802 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 18:F0:E4:12:76:3C in vlan 27 is moving from port Te3/12 to port Te2/1
8490404: Nov 14 11:01:36.830 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 18:F0:E4:12:76:3C in vlan 27 is moving from port Te2/1 to port Te3/12
8490405: Nov 14 11:01:40.942 MYT: %C4K_EBM-4-HOSTFLAPPING: Host B0:C5:59:01:DB:9B in vlan 22 is moving from port Te2/12 to port Te2/10
8490406: Nov 14 11:01:48.086 MYT: %C4K_EBM-4-HOSTFLAPPING: Host FC:2A:9C:77:52:82 in vlan 22 is moving from port Te2/10 to port Te2/12
8490407: Nov 14 11:01:54.656 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 94:8B:C1:B4:15:B8 in vlan 27 is moving from port Te3/12 to port Te2/1
8490408: Nov 14 11:01:57.257 MYT: %C4K_EBM-4-HOSTFLAPPING: Host FC:FC:48:C0:22:EC in vlan 27 is moving from port Te3/12 to port Te2/1
8490409: Nov 14 11:02:10.404 MYT: %C4K_EBM-4-HOSTFLAPPING: Host B0:C5:59:01:DB:9B in vlan 22 is moving from port Te2/10 to port Te3/4
8490410: Nov 14 11:02:17.051 MYT: %C4K_EBM-4-HOSTFLAPPING: Host D4:38:9C:3D:B0:36 in vlan 22 is moving from port Te3/3 to port Te2/10
8490411: Nov 14 11:02:22.882 MYT: %C4K_EBM-4-HOSTFLAPPING: Host D4:38:9C:3D:B0:36 in vlan 22 is moving from port Te2/10 to port Te3/3
8490412: Nov 14 11:02:24.004 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 18:F0:E4:12:76:3C in vlan 27 is moving from port Te3/12 to port Te2/1
8490413: Nov 14 11:02:25.106 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 6C:8D:C1:C0:F6:8E in vlan 27 is moving from port Te3/12 to port Te3/11
8490414: Nov 14 11:02:30.023 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 6C:8D:C1:C0:F6:8E in vlan 27 is moving from port Te3/11 to port Te2/1
8490415: Nov 14 11:03:04.341 MYT: %C4K_EBM-4-HOSTFLAPPING: Host F0:98:9D:A1:C0:6C in vlan 27 is moving from port Te3/12 to port Te2/1
8490416: Nov 14 11:03:04.406 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 18:F0:E4:12:76:3C in vlan 27 is moving from port Te2/1 to port Te3/12
8490417: Nov 14 11:03:11.839 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 40:98:AD:AE:79:62 in vlan 27 is moving from port Te2/7 to port Te3/12
8490418: Nov 14 11:03:16.676 MYT: %C4K_EBM-4-HOSTFLAPPING: Host F4:F5:DB:D1:99:61 in vlan 27 is moving from port Te2/1 to port Te2/8
8490419: Nov 14 11:03:18.009 MYT: %C4K_EBM-4-HOSTFLAPPING: Host D0:2B:20:E9:21:CA in vlan 25 is moving from port Te2/1 to port Te3/11
8490420: Nov 14 11:03:19.087 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 8C:F5:A3:9D:85:EC in vlan 22 is moving from port Te3/1 to port Te2/12
8490421: Nov 14 11:03:26.572 MYT: %C4K_EBM-4-HOSTFLAPPING: Host 94:8B:C1:B4:15:B8 in vlan 22 is moving from port Te2/10 to port Te3/1
Please advise, refer to attachement for both coreswitch config.
01-07-2019 09:16 PM
01-07-2019 11:09 PM
Hi Leo,
Why must it be in a etherchannel , the access switch has 2 uplink connected to both core switch which also running spanning-tree , how was this issue happen ?
01-07-2019 11:27 PM
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