Black Box LE2700A, User Manual, Page: 109 / 154

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Page 109
Chapter 5: Management
Table 5-80. Network Access Server Configuration screen options.
Label Description
Mode Indicates if 802.1X and MAC-based authentication is globally enabled or disabled on the switch. If globally
disabled, all ports are allowed to forward frames.
Reauthentication
Enabled If checked, clients are reauthenticated after the interval specified by the Reauthentication Period.
Reauthentication for 802.1X-enabled ports can be used to detect if a new device is plugged into a switch
port.
For MAC-based ports, reauthentication is only useful if the RADIUS server configuration has changed. It does
not involve communication between the switch and the client, and therefore does not imply that a client is
still present on a port (see Age Period below).
Reauthentication
Period Determines the period, in seconds, after which a connected client must be re-authenticated. This is only
active if the Reauthentication Enabled checkbox is checked. Valid range of the value is 1 to 3600 seconds.
EAPOL Timeout Determines the time for retransmission of Request Identity EAPOL frames.
Valid range of the value is 1 to 65535 seconds. This has no effect for MAC-based ports.
Age Period This setting applies to the following modes, i.e. modes using the Port Security functionality to secure MAC
addresses:
MAC-Based Auth.:
When the NAS module uses the Port Security module to secure MAC addresses, the Port Security module
needs to check for activity on the MAC address in question at regular intervals and free resources if no
activity is seen within a given period of time. This parameter controls exactly this period and can be set to a
number between 10 and 1000000 seconds.
For ports in MAC-based Auth. mode, reauthentication does not cause direct communications between the
switch and the client, so this will not detect whether the client is still attached or not, and the only way to
free any resources is to age the entry.
Hold Time This setting applies to the following modes, i.e. modes using the Port Security functionality to secure MAC
addresses:
MAC-Based Auth.:
If a client is denied access - either because the RADIUS server denies the client access or because the
RADIUS server request times out (according to the timeout specified on the "Configuration→Security→AAA"
page) - the client is put on hold in Unauthorized state. The hold timer does not count during an on-going
authentication.
The switch will ignore new frames coming from the client during the hold time.
The hold time can be set to a number between 10 and 1000000 seconds.
Port The port number for which the configuration below applies.
Admin State If NAS is globally enabled, this selection controls the port's authentication mode. The following modes are
available:
Force Authorized
In this mode, the switch will send one EAPOL Success frame when the port link is up, and any client on the
port will be allowed network access without authentication.
Force Unauthorized
In this mode, the switch will send one EAPOL Failure frame when the port link is up, and any client on the
port will be disallowed network access.