Has anyone seen this issue in particular with Cisco switches in L2 mode where the mac address table is constantly adding/removing devices, mainly just printers or ip phones, every few minutes?
This is causing some huge issues with out dot1x as they keep having to re-register. As seen below this is some of the information:
Switch ver: * 1 52 WS-C2960S-48TS-L 15.2(2a)E1 C2960S-UNIVERSALK9-M
Printer below over a period of 10 minutes (no sleep mode turned on):
Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Added Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6 Operation: Deleted Vlan: 108 MAC Addr: 9c93.4eb7.1b5b Dot1dBasePort: 6
run commands: On the port: snmp trap mac-notification change added snmp trap mac-notification change removed
On the switch:
mac address-table notification change interval 15 mac address-table notification change history-size 200 mac address-table notification change mac address-table aging-time 1000 
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