Cisco Systems EA6500 Manual De Usuario
C H A P T E R
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Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
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Configuring IEEE 802.1X Port-Based Authentication
This chapter describes how to configure IEEE 802.1X port-based authentication to prevent unauthorized
devices (clients) from gaining access to the network. Release 12.1(13)E and later releases support
802.1X port-based authentication.
devices (clients) from gaining access to the network. Release 12.1(13)E and later releases support
802.1X port-based authentication.
Note
For complete syntax and usage information for the commands used in this chapter, refer to the
Catalyst 6500 Series Switch Cisco IOS Command Reference publication.
Catalyst 6500 Series Switch Cisco IOS Command Reference publication.
This chapter consists of these sections:
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Understanding 802.1X Port-Based Authentication
The IEEE 802.1X standard defines a client-server-based access control and authentication protocol that
restricts unauthorized clients from connecting to a LAN through publicly accessible ports. The
authentication server authenticates each client connected to a switch port and assigns the port to a VLAN
before making available any services offered by the switch or the LAN.
restricts unauthorized clients from connecting to a LAN through publicly accessible ports. The
authentication server authenticates each client connected to a switch port and assigns the port to a VLAN
before making available any services offered by the switch or the LAN.
Until the client is authenticated, 802.1X access control allows only Extensible Authentication Protocol
over LAN (EAPOL) traffic through the port to which the client is connected. After authentication is
successful, normal traffic can pass through the port.
over LAN (EAPOL) traffic through the port to which the client is connected. After authentication is
successful, normal traffic can pass through the port.
These sections describe IEEE 802.1X port-based authentication:
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