Hi everybody.

Let say we have a network as shown below:

R1( supplicant)----ethernet--SW( authenticator)-----ethernet-----Radius server

Let say R1 sends EAP message to SW.  Does R1 encapsulate the eap message as:

Ethernet->EAPmessage.

Radius server uses udp ports.  When Sw( authenticator ) receives a EAP message, it simply relays it to radius server.  How does Sw encapsulate the EAP message in radius protocol i.e   does it look like this:

Ethernet->IP->udp->Radius->EAP message ?

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802.1x support  various EAP methods such as EAP-TLS,EAP-md5.   If we want to configure Cisco router say R1 as 802.1x supplicant, what is the default EAP method?

How can we change this default EAP method  to EAP-TLS on cisco router configured as 802.1x supplicant?

thanks and have a great weekend.