3com 5500-SI Manual De Usuario

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196 
C
HAPTER
 14: C
ENTRALIZED
 MAC A
DDRESS
 A
UTHENTICATION
 C
ONFIGURATION
Centralized MAC 
Address 
Authentication 
Configuration
The following sections describe centralized MAC address authentication 
configuration tasks:
For a port, the centralized MAC address authentication configuration and the 
maximum number of learned MAC addresses configuration are mutually exclusive. 
That is, if you enable the centralized MAC address authentication function for a port, 
the maximum number of learned MAC addresses configuration (see the 
mac-address max-mac-count command) is unavailable. And if you set the 
maximum number of learned MAC addresses, the centralized MAC address 
authentication configuration is unavailable.
Enabling
Global/Port-based
Centralized MAC
Address Authentication
Table 175 lists the operations to enable centralized MAC address authentication on 
specified ports.
Port-based centralized MAC address authentication configurations take effect only 
when global centralized MAC address authentication is also enabled.
Configuring an ISP
Domain for MAC
Address Authentication
Users
Table 176 lists the operations to configure an ISP domain for centralized MAC address 
authentication users.
Setting Centralized MAC
Address Authentication
Timers
Following timers are used in centralized MAC address authentication.
Offline-detect timer. This timer sets the interval for a switch to test whether or not 
a user goes offline. Upon determining a user is offline, a switch notifies the 
RADIUS server of the state of the user, and the RADIUS server in turn stops 
perform accounting operation on the user.
Quiet timer. If a user fails to pass the authentication performed by a switch, the 
switch stops authenticating users for a specified period before it authenticates 
users again. You can use the quiet timer to set the period.
Table 175   Enable/disable centralized MAC address authentication
Operation
Command
Description
Enter system view
system-view
Enable centralized 
MAC address 
authentication
mac-authentication interface 
interface-list 
Required
By default, global and port-based 
centralized MAC address 
authentications are disabled.
Table 176   Configure an ISP domain for MAC address authentication users
Operation
Command
Description
Enter system view
system-view
Configure an ISP domain 
for MAC address 
authentication users
mac-authentication domain 
isp-name
Required
By default, the ISP domain is not 
configured for MAC address 
authentication users.