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C
ONFIGURING
THE
S
WITCH
3-94
RADIUS server verifies the client credentials and responds with an accept
or reject packet. If authentication is successful, the switch allows the client
to access the network. Otherwise, network access is denied and the port
remains blocked.
The operation of dot1x on the switch requires the following:
• The switch must have an IP address assigned.
• RADIUS authentication must be enabled on the switch and the IP
address of the RADIUS server specified.
• 802.1X must be enabled globally for the switch.
• Each switch port that will be used must be set to dot1x “Auto” mode.
• Each client that needs to be authenticated must have dot1x client
software installed and properly configured.
• The RADIUS server and 802.1X client support EAP. (The switch only
supports EAPOL in order to pass the EAP packets from the server to
the client.)
• The RADIUS server and client also have to support the same EAP
authentication type – MD5. (Some clients have native support in
Windows, otherwise the dot1x client must support it.)
Displaying 802.1X Global Settings
The 802.1X protocol provides port authentication.
Command Attributes
802.1X System Authentication Control – The global setting for
802.1X.
Web – Click Security, 802.1X, Information.
Figure 3-40 802.1X Global Information