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C4K_EBM-4-HOSTFLAPPING error

eap
Level 1
Level 1

I have read previous posts on here saying that this error normally indicates a loop, however, I don't think this is the problem. Does anyone have any other ideas? Thanks.

Jan 7 07:30:22.193: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:28:7C in vlan 69

is flapping between port Gi5/43 and port Gi5/10

Jan 7 07:30:22.213: %C4K_EBM-4-HOSTFLAPPING: Host 00:B0:D0:CB:A7:01 in vlan 69

is flapping between port Gi6/45 and port Gi5/10

Jan 7 07:30:22.733: %C4K_EBM-4-HOSTFLAPPING: Host 00:B0:D0:CB:A7:31 in vlan 69

is flapping between port Gi5/10 and port Gi6/10

Jan 7 07:32:03.410: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi5/10 and port Gi3/43

Jan 7 07:32:04.614: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:30:E3 in vlan 69

is flapping between port Gi6/34 and port Gi5/10

Jan 7 07:34:11.940: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 07:34:12.136: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi5/10 and port Gi3/43

Jan 7 07:34:12.136: %C4K_EBM-4-HOSTFLAPPING: Host 00:D0:C9:90:51:43 in vlan 69

is flapping between port Gi6/2 and port Gi3/43

Jan 7 07:34:12.176: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:2A:ED in vlan 69

is flapping between port Gi3/43 and port Gi6/15

Jan 7 07:34:12.656: %C4K_EBM-4-HOSTFLAPPING: Host 00:0B:DB:5B:E4:18 in vlan 69

is flapping between port Gi5/10 and port Gi3/15

Jan 7 07:34:12.724: %C4K_EBM-4-HOSTFLAPPING: Host 00:06:5B:80:65:91 in vlan 69

is flapping between port Gi5/10 and port Gi5/9

Jan 7 07:45:13.907: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 07:50:36.849: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:2D:FD in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 07:50:36.849: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:29:CB in vlan 69

is flapping between port Gi3/43 and port Gi6/40

Jan 7 07:51:53.823: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:2D:F5 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 07:51:53.903: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:29:CB in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 07:51:54.838: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi5/10 and port Gi3/43

Jan 7 07:52:22.043: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 07:52:22.207: %C4K_EBM-4-HOSTFLAPPING: Host 00:50:04:D0:62:E4 in vlan 69

is flapping between port Gi5/10 and port Gi3/43

Jan 7 07:52:22.255: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:30:F9 in vlan 69

is flapping between port Gi6/39 and port Gi5/10

Jan 7 07:57:29.803: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 07:58:17.940: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 08:01:15.947: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 08:01:17.071: %C4K_EBM-4-HOSTFLAPPING: Host 00:B0:D0:CB:DD:0E in vlan 69

is flapping between port Gi5/30 and port Gi3/43

Jan 7 08:01:32.001: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi5/10 and port Gi3/43

Jan 7 08:01:32.185: %C4K_EBM-4-HOSTFLAPPING: Host 00:0B:DB:5B:E4:18 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 08:01:33.041: %C4K_EBM-4-HOSTFLAPPING: Host 00:0B:DB:72:D8:ED in vlan 69

is flapping between port Gi5/10 and port Gi3/43

Jan 7 08:01:33.449: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi1/1 and port Gi3/43

Jan 7 08:02:46.146: %C4K_EBM-4-HOSTFLAPPING: Host 08:00:46:0D:D5:A7 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 08:03:57.776: %C4K_EBM-4-HOSTFLAPPING: Host 00:30:B6:3B:E0:D8 in vlan 69

is flapping between port Gi3/43 and port Gi5/10

Jan 7 08:03:57.896: %C4K_EBM-4-HOSTFLAPPING: Host 00:07:E9:09:2F:85 in vlan 69

is flapping between port Gi5/10 and port Gi3/43

Jan 7 08:03:59.084: %C4K_EBM-4-HOSTFLAPPING: Host 08:00:46:72:F5:5D in vlan 69

is flapping between port Gi5/10 and port Gi3/31

1 Reply 1

kkalaycioglu
Level 4
Level 4

Many hosts are flapping between two ports. Are these ports (reported in the error logs) trunk or access ports? And what is the connection type this switch and the other layer-2 devices? Problem seems about one VLAN , do you have a hub connected somewhere in your switch network with two cables?

Regards.