Cisco Catalyst 4506 L3 / Flip Flop

Dear all

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: 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?

Thanks Simon

Reply to
Rene Obrecht
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