H3C Technologies H3C S6300 Series Switches - Manual (Page 84)

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Figure 29 802.1X authentication procedure in EAP termination mode
In EAP termination mode, the network access device rather than the authentication server generates an
MD5 challenge for password encryption. The network access device then sends the MD5 challenge
together with the username and encrypted password in a standard RADIUS packet to the RADIUS server.