Hello All,
From few days we are facing MAC flapping issue between both core and distribution switches in our DC network. Now we are using Cisco-3850 on Core netwrok and Cisco-2960 switches using in distribution and access network. So could you please suggest for the solution. How we can rectify it. Also i am shareing the Network diagram.
And pleas find the below swithes logs.
Sep 14 15:50:22.648: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d553.1930 in vlan 300 is flapping between port Gi1/0/1 and port Gi1/0/45
Sep 14 15:50:22.729: %SW_MATM-4-MACFLAP_NOTIF: Host 006c.bc7d.52af in vlan 300 is flapping between port Gi1/0/45 and port Po2
Sep 14 15:50:22.952: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d5a6.66b0 in vlan 300 is flapping between port Gi1/0/2 and port Gi1/0/45
Sep 14 15:50:23.449: %SW_MATM-4-MACFLAP_NOTIF: Host 0057.d258.9930 in vlan 300 is flapping between port Gi1/0/5 and port Gi1/0/45
Sep 14 15:50:28.248: %SW_MATM-4-MACFLAP_NOTIF: Host 0057.d258.9930 in vlan 10 is flapping between port Gi1/0/44 and port Gi1/0/5
Sep 14 15:50:28.527: %SW_MATM-4-MACFLAP_NOTIF: Host 006c.bc7d.52af in vlan 10 is flapping between port Gi1/0/44 and port Po2
Sep 14 15:50:28.782: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d5a6.66b0 in vlan 10 is flapping between port Gi1/0/44 and port Gi1/0/2
Sep 14 15:50:29.467: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d553.1930 in vlan 10 is flapping between port Gi1/0/44 and port Gi1/0/1
Sep 14 15:50:30.446: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d553.1930 in vlan 400 is flapping between port Gi1/0/1 and port Gi1/0/46
Sep 14 15:50:30.768: %SW_MATM-4-MACFLAP_NOTIF: Host 006c.bc7d.52af in vlan 400 is flapping between port Gi1/0/46 and port Po2
Sep 14 15:50:33.165: %SW_MATM-4-MACFLAP_NOTIF: Host 0057.d258.9930 in vlan 400 is flapping between port Gi1/0/5 and port Gi1/0/46
Sep 14 15:50:37.272: %SW_MATM-4-MACFLAP_NOTIF: Host 006c.bc7d.52af in vlan 300 is flapping between port Po2 and port Gi1/0/45
Sep 14 15:50:37.632: %SW_MATM-4-MACFLAP_NOTIF: Host 0057.d258.9930 in vlan 300 is flapping between port Gi1/0/45 and port Gi1/0/5
Sep 14 15:50:37.737: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d553.1930 in vlan 300 is flapping between port Gi1/0/1 and port Gi1/0/45
Sep 14 15:50:37.846: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d553.1930 in vlan 10 is flapping between port Gi1/0/44 and port Gi1/0/1
Sep 14 15:50:38.566: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d5a6.66b0 in vlan 300 is flapping between port Gi1/0/2 and port Gi1/0/45
Sep 14 15:50:40.572: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet1/0/46 (400), with ZNETLIVE_SW_285-IP15 GigabitEthernet1/0/44 (10).
Sep 14 15:50:40.575: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet1/0/45 (300), with ZNETLIVE_SW_285-IP15 GigabitEthernet1/0/44 (10).
Sep 14 15:50:41.697: %SW_MATM-4-MACFLAP_NOTIF: Host 006c.bc7d.52af in vlan 10 is flapping between port Gi1/0/44 and port Po2
Sep 14 15:50:41.697: %SW_MATM-4-MACFLAP_NOTIF: Host 006c.bc7d.52af in vlan 400 is flapping between port Po2 and port Gi1/0/46
Sep 14 15:50:42.246: %SW_MATM-4-MACFLAP_NOTIF: Host 00eb.d553.1930 in vlan 400 is flapping between port Gi1/0/1 and port Gi1/0/46
Sep 14 15:50:42.347: %SW_MATM-4-MACFLAP_NOTIF: Host 0057.d258.9930 in vlan 10 is flapping between port Gi1/0/44 and port Gi1/0/5
Sep 14 15:50:43.718: %SW_MATM-4-MACFLAP_NOTIF: Host 0057.d258.9930 in vlan 400 is flapping between port Gi1/0/5 and port Gi1/0/46
Sep 14 15:50:44.329: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet1/0/46 (400), with ZAPC0001-PHY-NWK-SWT-180.179.195.181 GigabitEthernet1/0/3 (300).
