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00:00:00:00:00:00 as MAC address in authentication session

umahar
Cisco Employee
Cisco Employee

Hi,

We are seeing huge number logs on ISE coming from MAC address 00:00:00:00:00:00 from different switches

The show authentication session output from the switch is shown below

The interface is configured with multi-auth and the phones and machines are working properly in DATA and VOICE domain.

Has anyone observed these logs before ?

What could be source of these requests ?

I do not see any such entry in the mac address table from that interface

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