Cisco Systems OL-8550-09 - page 63

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Catalyst 3750 SwitchSoftware Configuration Guide
OL-8550-09
Chapter1 Overview
Features
•IEEE 802.1x port-based authentication to prevent unauthorized devices (clients) from gaining
access to the network. These features are supported:
– Multidomain authentication (MDA) to allow both a data device and a voice device, such as an
IP phone (Cisco or non-Cisco), to independently authenticate on the same IEEE 802.1x-enabled
switch port
– Dynamic voice virtual LAN (VLAN) for MDA to allow a dynamic voice VLAN on an
MDA-enabled port
– VLAN assignment for restricting 802.1x-authenticated users to a specified VLAN
– Support for VLAN assignment on a port configured for multi-auth mode. The RADIUS server
assigns a VLAN to the first host to authenticate on the port, and subsequent hosts use the same
VLAN. Voice VLAN assignment is supported for one IP phone.
– Port security for controlling access to 802.1x ports
– Voice VLAN to permit a Cisco IP Phone to access the voice VLAN regardless of the authorized
or unauthorized state of the port
– IP phone detection enhancement to detect and recognize a Cisco IP phone.
– Guest VLAN to provide limited services to non-802.1x-compliant users
– Restricted VLAN to provide limited services to users who are 802.1x compliant, but do not have
the credentials to authenticate via the standard 802.1x processes
– 802.1x accounting to track network usage
– 802.1x with wake-on-LAN to allow dormant PCs to be powered on based on the receipt of a
specific Ethernet frame
– 802.1x readiness check to determine the readiness of connected end hosts before configuring
IEEE 802.1x on the switch
– Voice aware 802.1x security to apply traffic violation actions only on the VLAN on which a
security violation occurs.
– MAC authentication bypass to authorize clients based on the client MAC address.
– Network Edge Access Topology (NEAT) with 802.1X switch supplicant, host authorization
with CISP, and auto enablement to authenticate a switch outside a wiring closet as a supplicant
to another switch.
– IEEE 802.1x with open access to allow a host to access the network before being authenticated.
– IEEE 802.1x authentication with downloadable ACLs and redirect URLs to allow per-user ACL
downloads from a Cisco Secure ACS server to an authenticated switch.
– Support for dynamic creation or attachment of an auth-default ACL on a port that has no
configured static ACLs.
– Flexible-authentication sequencing to configure the order of the authentication methods that a
port tries when authenticating a new host.
– Multiple-user authentication to allow more than one host to authenticate on an 802.1x-enabled
port.
•Network Admission Control (NAC) features:
– NAC Layer 2 802.1x validation of the antivirus condition or posture of endpoint systems or
clients before granting the devices network access.
For information about configuring NAC Layer 2 802.1x validation, see the “Configuring NAC
Layer 2 802.1x Validation” section on page10-62.