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| General Security Measures
Network Access (MAC Address Authentication)
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◆ Authenticated MAC addresses are stored as dynamic entries in the
switch secure MAC address table and are removed when the aging time
expires. The maximum number of secure MAC addresses supported for
the switch system is 1024.
◆ Configured static MAC addresses are added to the secure address table
when seen on a switch port. Static addresses are treated as
authenticated without sending a request to a RADIUS server.
◆ MAC authentication, 802.1X, and port security cannot be configured
together on the same port. Only one security mechanism can be
applied.
◆ MAC authentication cannot be configured on trunk ports.
◆ When port status changes to down, all MAC addresses are cleared from
the secure MAC address table. Static VLAN assignments are not
restored.
◆ The RADIUS server may optionally return a VLAN identifier list. VLAN
identifier list is carried in the “Tunnel-Private-Group-ID” attribute. The
VLAN list can contain multiple VLAN identifiers in the format “1u,2t,”
where “u” indicates untagged VLAN and “t” tagged VLAN. The “Tunnel-
Type” attribute should be set to “VLAN,” and the “Tunnel-Medium-Type”
attribute set to “802.”
EXAMPLE
Console(config-if)#network-access mode mac-authentication
Console(config-if)#
network-access
port-mac-filter
Use this command to enable the specified MAC address filter. Use the no
form of this command to disable the specified MAC address filter.
SYNTAX
network-access port-mac-filter filter-id
no network-access port-mac-filter
filter-id - Specifies a MAC address filter table. (Range: 1-64)
DEFAULT SETTING
None
COMMAND MODE
Interface Configuration
COMMAND MODE
◆ Entries in the MAC address filter table can be configured with the
network-access mac-filter command.
◆ Only one filter table can be assigned to a port.
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