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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
301
4.11.12 Network Access (MAC Address Authentication)
Some devices connected to switch ports may not be able to support 802.1X authentication due to hardware or software
limitations. This is often true for devices such as network printers, IP phones, and some wireless access points. This switch
enables network access from these devices to be controlled by authenticating device MAC addresses with a central RADIUS
server.
1. RADIUS authentication must be activated and configured properly for the MAC
Address authentication feature to work properly. (See “RADIUS Client”.)
2. MAC authentication cannot be configured on trunk ports.
2. MAC authentication cannot be configured on trunk ports.
Command Usage
• Network Access authentication controls access to the network by authenticating the MAC address of each host that attempts
to connect to a switch port. Traffic received from a specific MAC address is forwarded by the switch only if the source MAC
address is successfully authenticated by a central RADIUS server. While authentication for a MAC address is in progress, all
traffic is blocked until authentication is completed. On successful authentication, the RADIUS server may optionally assign
VLAN settings for the switch port.
• When enabled on a port, the authentication process sends a Password Authentication Protocol (PAP) request to a configured
RADIUS server. The username and password are both equal to the MAC address being authenticated.
• On the RADIUS server, PAP username and passwords must be configured in the MAC address format XX-XX-XX-XX-XX-XX
(all in upper case).
• 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.
• 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 to be applied to the switch port. The following attributes need
to be configured on the RADIUS server.
-Tunnel-Type = VLAN
-Tunnel-Medium-Type = 802
-Tunnel-Private-Group-ID = 1u,2t [VLAN ID list]
The VLAN identifier list is carried in the RADIUS “Tunnel-Private-Group-ID” attribute. The VLAN list can contain multiple VLAN
identifiers in the format “1u,2t,3u” where “u” indicates an untagged VLAN and “t” a tagged VLAN.