AMX NXA-ENET8-2POE Operation/Reference Manual page 74

Configuring the NXA-ENET8-2POE
Network Access Server Configuration parameters
System Configuration
• Mode
• Reauthentication
Enabled
• Reauthentication
Period
• EAPOL Timeout
• Aging Period
• Hold Time
• RADIUS-Assigned
QoS Enabled
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Indicates if 802.1X and MAC-based authentication are globally enabled or dis-
abled on the switch. If globally disabled, all ports are allowed to forward frames.
Sets clients to be re-authenticated after an interval specified by the Re-authentica-
tion Period.
Re-authentication can be used to detect if a new device is plugged into a switch
port. (Default: Disabled).
For MAC-based ports, reauthentication is only useful if the RADIUS server config-
uration 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).
Sets the time period after which a connected client must be re-authenticated.
Range: 1-3600 seconds; Default: 3600 seconds
Sets the time the switch waits for a supplicant response during an authentication
session before retransmitting a Request Identify EAPOL packet. (Range: 1-255
seconds; Default: 30 seconds)
The period used to calculate when to age out a client allowed access to the switch
through Single 802.1X, Multi 802.1X, and MAC-based authentication as described
below. (Range: 10-1000000 seconds; Default: 300 seconds)
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 ques-
tion at regular intervals and free resources if no activity is seen within the given
age period.
If reauthentication is enabled and the port is in a 802.1X-based mode, this is not
so critical, since supplicants that are no longer attached to the port will get
removed upon the next reauthentication, which will fail. But if reauthentication is
not enabled, the only way to free resources is by aging the entries.
For ports in MAC-based Auth. mode, reauthentication does not cause direct com-
munication 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.
The time after an EAP Failure indication or RADIUS timeout that a client is not
allowed access. This setting applies to ports running Single 802.1X, Multi 802.1X,
or MAC-based authentication. (Range: 10-1000000 seconds; Default: 10 sec-
onds)
If the RADIUS server denies a client access, or a RADIUS server request times
out (according to the timeout specified on the AAA menu on page 109), the client
is put on hold in the Unauthorized state. In this state, the hold timer does not count
down during an on-going authentication.
In MAC-based Authentication mode, the switch will ignore new frames coming
from the client during the hold time.
RADIUS-assigned QoS provides a means to centrally control the traffic class to
which traffic coming from a successfully authenticated supplicant is assigned on
the switch. The RADIUS server must be configured to transmit special RADIUS
attributes to take advantage of this feature.
The RADIUS-Assigned QoS Enabled checkbox provides a quick way to globally
enable/disable RADIUS-server assigned QoS Class functionality. When checked,
the individual port settings determine whether RADIUS-assigned QoS Class is
enabled for that port. When unchecked, RADIUS-server assigned QoS Class is
disabled for all ports.
When RADIUS-Assigned QoS is both globally enabled and enabled for a given
port, the switch reacts to QoS Class information carried in the RADIUS Access-
Accept packet transmitted by the RADIUS server when a supplicant is success-
fully authenticated. If present and valid, traffic received on the supplicant's port will
be classified to the given QoS Class.
NXA-ENET8-2POE Gigabit Ethernet Layer 2 PoE Switch