Chapter 12
| Security Measures
Network Access (MAC Address Authentication)
– 272 –
â—† Dynamic QoS assignment fails and the authentication result changes from
success to failure when the following conditions occur:
â–
Illegal characters found in a profile value (for example, a non-digital
character in an 802.1p profile value).
â–
Failure to configure the received profiles on the authenticated port.
â—† When the last user logs off on a port with a dynamic QoS assignment, the
switch restores the original QoS configuration for the port.
â—† When a user attempts to log into the network with a returned dynamic QoS
profile that is different from users already logged on to the same port, the user
is denied access.
â—† While a port has an assigned dynamic QoS profile, any manual QoS
configuration changes only take effect after all users have logged off the port.
Configuring Global
Settings for Network
Access
MAC address authentication is configured on a per-port basis, however there are
two configurable parameters that apply globally to all ports on the switch. Use the
Security > Network Access (Configure Global) page to configure MAC address
authentication aging and reauthentication time.
Parameters
These parameters are displayed:
◆ Aging Status – Enables aging for authenticated MAC addresses stored in the
secure MAC address table. (Default: Disabled)
This parameter applies to authenticated MAC addresses configured by the MAC
Address Authentication process described in this section, as well as to any
secure MAC addresses authenticated by 802.1X, regardless of the 802.1X
Operation Mode (Single-Host, Multi-Host, or MAC-Based authentication as
described on page 326).
Authenticated MAC addresses are stored as dynamic entries in the switch’s
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.
◆ Reauthentication Time – Sets the time period after which a connected host
must be reauthenticated. When the reauthentication time expires for a secure
MAC address, it is reauthenticated with the RADIUS server. During the
reauthentication process traffic through the port remains unaffected.
(Range: 120-1000000 seconds; Default: 1800 seconds)
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