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Mac flapping again

What would cause a printer to flap between an uplinked switch port and a port that's connected to our frame facing router?

John

HTH, John *** Please rate all useful posts ***
2 REPLIES

Re: Mac flapping again

this might be a DHCP conflict for an IP address that's already assigned to another host or router. try to reserve the IP address of your router on your DHCP server.

Re: Mac flapping again

Is the router doing L2TPv3, AToM, or some other l2-over-l3 protocol mechanism? If the MAC address is seen flapping, chances are you are seeing some kind of layer-2 loop, so it would be appropriate to start checking layer-2 connections and protocols such as STP.

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