IEEE dot1x

[ltrasmundi]

If a port is configured with dot1x port security and option AUTO, are any protocols allowed threw the port prior to authentication ? e.g. CDP, MDH5 vtp

[Mohamed Anees Mohammed Abdulla]

I just tested in the lab. I have a switch connected on port fa 3/1. as soon as I enabled dot1x I don't see the switch in show cde nei. So none of the traffic are passed.

[dalara]

What kind of traffic send 802.1x (unicast,which dest IP@, which source IP@, do you have some capture for example in ethereal for this protocol?

Thanks

[ltrasmundi]

Thanks for your response. I wrote the BCMSN CCNP certification and it asked this question. The problem is that it was multiple choice and none of the options where no traffic is passed. I was very confused by this and still wondering why they would only have options to pick which protocol would pass.

[yan.yong]

before the port is authenticated,eapol protocol can pass the port