Chapter 4: Web configuration
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NS3552-8P-2S-V2 User Manual
The page includes the following fields:
System configuration
Object
Description
Mode
Indicates if NAS is globally enabled or disabled on the switch. If globally
disabled, all ports are allowed forwarding of frames.
Reauthentication
Enabled
If selected, successfully authenticated supplicants/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 or if a supplicant is no longer attached.
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 doesn't imply that a client is still present
on a port.
Reauthentication
Period
Determines the period, in seconds, after which a connected client must be
reauthenticated. This is only active if the
Reauthentication Enabled
check
box is selected. Valid values are in the range 1 to 3600 seconds.
EAPOL Timeout
Determines the time for retransmission of Request Identity EAPOL frames.
Valid values are in the range 1 to 65535 seconds. This has no effect on
MAC-based ports.
Aging Period
This setting applies to the following modes (modes using port security
functionality to secure MAC addresses):
Single 802.1X
Multi 802.1X
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.
If reauthentication is enabled and the port is in a 802.1X-based mode, this is
not so criticial, since supplicants that are no longer attached to the port are
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 doesn't cause direct
communication between the switch and the client, so this will not detect if the
client is still attached, 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):
Single 802.1X
Multi 802.1X
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 the Unauthorized state. The hold timer does not count
during an on-going authentication.
In MAC-based Auth. mode, the The switch will ignore new frames coming
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