Lantech LGS-2624C, User Manual, Page: 222 / 279

• The switch looks for the first set of these attributes that have the same
Tag value and fulfil the following requirements (if Tag == 0 is used, the
Tunnel-Private-Group-ID does not need to include a Tag):
- Value of Tunnel-Medium-Type must be set to "IEEE-802" (ordinal 6).
- Value of Tunnel-Type must be set to "VLAN" (ordinal 13).
- Value of Tunnel-Private-Group-ID must be a string of ASCII chars in the
range '0' - '9', which is interpreted as a decimal string representing the
VLAN ID. Leading '0's are discarded. The final value must be in the range
[1; 4095].
Guest VLAN Enabled
When Guest VLAN is both globally enabled and enabled (checked) for a
given port, the switch considers moving the port into the Guest VLAN
according to the rules outlined below.
This option is only available for EAPOL-based modes, i.e.:
• Port-based 802.1X
• Single 802.1X
• Multi 802.1X
For trouble-shooting VLAN assignme
nts, use the "Monitor→VLANs→VLAN
Membership and VLAN Port" pages. These pages show which modules
have (temporarily) overridden the current Port VLAN configuration.
Guest VLAN Operation:
When a Guest VLAN enabled port's link comes up, the switch starts
transmitting EAPOL Request Identity frames. If the number of transmissions
of such frames exceeds Max. Reauth. Count and no EAPOL frames have
been received in the meanwhile, the switch considers entering the Guest
VLAN. The interval between transmission of EAPOL Request Identity
frames is configured with EAPOL Timeout. If Allow Guest VLAN if EAPOL
Seen is enabled, the port will now be placed in the Guest VLAN. If disabled,
the switch will first check its history to see if an EAPOL frame has
previously been received on the port (this history is cleared if the port link
goes down or the port's Admin State is changed), and if not, the port will be
placed in the Guest VLAN. Otherwise it will not move to the Guest VLAN,
but continue transmitting EAPOL Request Identity frames at the rate given
by EAPOL Timeout.
Once in the Guest VLAN, the port is considered authenticated, and all
attached clients on the port are allowed access on this VLAN. The switch
will not transmit an EAPOL Success frame when entering the Guest VLAN.
While in the Guest VLAN, the switch monitors the link for EAPOL frames,
and if one such frame is received, the switch immediately takes the port out
of the Guest VLAN and starts authenticating the supplicant according to the
port mode. If an EAPOL frame is received, the port will never be able to go
back into the Guest VLAN if the "Allow Guest VLAN if EAPOL Seen" is
disabled.
Port State
The current state of the port. It can undertake one of the following values:
Globally Disabled: NAS is globally disabled.
Link Down: NAS is globally enabled, but there is no link on the port.
Authorized: The port is in Force Authorized or a single-supplicant mode and
the supplicant is authorized.