We're running a Cisco Catalyst 4506 Layer 3 Switch, Version 12.1(19). Everythings works fine, but all night it changes its visible MAC Address (Flip Flop). We have
here's our Arpwatch message:
flip flop eth0 ip address: 172.22.1.1 interface: eth0 ethernet address: 0:e:d7:33:cb:7f ethernet vendor: Cisco Systems old ethernet address: 0:0:c:33:ef:d3 old ethernet vendor: Cisco Systems, Inc. [Cisco] timestamp: Tuesday, November 22, 2005 1:59:03 +0100 previous timestamp: Tuesday, November 22, 2005 1:58:58 +0100 delta: 5 seconds
What could this be? Is this normal behaviour?