Features working together with 802.1x, Vlan assignment – H3C Technologies H3C S5120 Series Switches User Manual
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Username request timeout timer (tx-period): This timer is triggered by the device in two cases. The
first case is when the client requests for authentication. The device starts this timer when it sends
an EAP-Request/Identity packet to a client. If it receives no response before this timer expires, the
device retransmits the request. The second case is when the device authenticates the 802.1X
client that cannot request for authentication actively. The device sends multicast
EAP-Request/Identity packets periodically through the port enabled with 802.1X function. In this
case, this timer sets the interval between sending the multicast EAP-Request/Identity packets.
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Client timeout timer (supp-timeout): Once a device sends an EAP-Request/MD5 Challenge packet
to a client, it starts this timer. If this timer expires but it receives no response from the client, it
retransmits the request.
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Server timeout timer (server-timeout): Once a device sends a RADIUS Access-Request packet to
the authentication server, it starts this timer. If this timer expires but it receives no response from
the server, it retransmits the request.
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Handshake timer (handshake-period): After a client passes authentication, the device sends to the
client handshake requests at this interval to check whether the client is online. If the device
receives no response after sending the allowed maximum number of handshake requests, it
considers that the client is logged off.
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Quiet timer (quiet-period): When a client fails the authentication, the device refuses further
authentication requests from the client in this period of time.
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Periodic re-authentication timer (reauth-period): If periodic re-authentication is enabled on a port,
the device re-authenticates online users on the port at the interval specified by this timer.
Features Working Together with 802.1X
These features are:
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Mandatory authentication domain for a specified port
VLAN assignment
After an 802.1X user passes the authentication, the server will send an authorization message to the
device. If the server is configured with the VLAN assignment function, the assigned VLAN information
will be included in the message. The device, depending on the link type of the port used to log on, adds
the port to the assigned VLAN according to the following rules:
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If the port link type is Access, the port leaves its initial VLAN, that is, the VLAN configured for it and
joins the assigned VLAN.
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If the port link type is Trunk, the assigned VLAN is allowed to pass the current trunk port. The
default VLAN ID of the port is that of the assigned VLAN.
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If the port link type is Hybrid, the assigned VLAN is allowed to pass the current port without carrying
the tag. The default VLAN ID of the port is that of the assigned VLAN. Note that if the Hybrid port is
configured with MAC-based VLAN, the device will dynamically create a MAC-based VLAN
according to the VLAN assigned by the authentication server, and remain the default VLAN ID of
the port unchanged.