Optical Systems Design OSD2524, User Manual

Page: 97 / 402

OPTICAL SYSTEMS DESIGN
DOC ID: 10120001
OSD2524 OPERATOR MANUAL
PAGE 97
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 assignments, 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.
Unauthorized: The port is in Force Unauthorized or a single-supplicant mode and the supplicant is not
successfully authorized by the RADIUS server.
X Auth/Y Unauth: The port is in a multi-supplicant mode. Currently X clients are authorized and Y are
unauthorized.
Restart
Two buttons are available for each row. The buttons are only enabled when authentication is globally
enabled and the port's Admin State is in an EAPOL-based or MAC-based mode.
Clicking these buttons will not cause settings changed on the page to take effect.
Reauthenticate: Schedules a reauthentication whenever the quiet-period of the port runs out (EAPOL-
based authentication). For MAC-based authentication, reauthentication will be attempted immediately.
The button only has effect for successfully authenticated clients on the port and will not cause the clients
to get temporarily unauthorized.
Reinitialize: Forces a reinitialization of the clients on the port and thereby a reauthentication
immediately. The clients will transfer to the unauthorized state while the reauthentication is in progress.
Buttons