I have 2 Cisco 2960G Switches being used in an "active , passive" configuration. the switches are connected via 4 port etherchannel on each switch (total of 8) Recently there have been some logs showing there is some "flapping" going on.This is some output:
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 000c.297c.1111 in vlan 100 is flapping between port Po3 and port Po6
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 000c.2958.2222 in vlan 100 is flapping between port Po2 and port Po6
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 000c.290d.3333 in vlan 100 is flapping between port Po2 and port Po6
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a3.4444 in vlan 100 is flapping between port Po2 and port Po6
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 000c.295b.5555 in vlan 100 is flapping between port Po2 and port Po6
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a3.6666 in vlan 100 is flapping between port Po3 and port Po6
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a3.7777 in vlan 100 is flapping between port Po6 and port Po1
1d: %SW_MATM-4-MACFLAP_NOTIF: Host 0050.56a3.8888 in vlan 100 is flapping between port Po6 and port Po1
now Im fairly sure that the configs have been changed and is causing these issues. But I wanted a sanity check. I have attached the configs for both switches.
Also I would add that these switches are attached to ESX hosts using vmware in an ACTIVE PAssive config which is why they are in access mode
another thing that might be worth mentioning is that I am using inter-vlan routing
Router (802.1q)
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Switch
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Switch
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ESX Hosts
thanks for any help
