Application Guide

[69]
Software User's
Manual
–
Version 3.0
maximum number of clients that can be attached to a port can be limited
using the Port Security Limit Cont
rol functionality.
RADIUS-Assigned QoS Enabled
When RADIUS-Assigned QoS is both globally enabled and enabled (checked) on a given port, the
switch reacts to QoS Class information carried in the RADIUS Access-Accept packet transmitted by
the RADIUS server when a supplicant is successfully authenticated. If present and valid, traffic
received on the supplicant's port will be classified to the given QoS Class. If (re-)authentication fails or
the RADIUS Access-Accept packet no longer carries a QoS Class or it's invalid, or the supplicant is
otherwise no longer present on the port, the port's QoS Class is immediately reverted to the original
QoS Class (which may be changed by the administrator in the meantime without affecting the
RADIUS-assigned).
This option is only available for single-client modes:
 Port-based 802.1X
 Single 802.1X
RADIUS attributes used in identifying a QoS Class:
The User-Priority-Table attribute defined in RFC4675 forms the basis for identifying the QoS Class in
an Access-Accept packet.
Only the first occurrence of the attribute in the packet will be considered, and to be valid, it must follow
this rule:
 All 8 octets in the attribute's value must be identical and consist of ASCII characters in the
range '0' - '7', which translates into the desired QoS Class in the range [0:7].
RADIUS-Assigned VLAN Enabled
When RADIUS-Assigned VLAN is both globally enabled and enabled (checked) for a given port, the
switch reacts to VLAN ID information carried in the RADIUS Access-Accept packet transmitted by the
RADIUS server when a supplicant is successfully authenticated. If present and valid, the port’s Port
VLAN ID will be changed to this VLAN ID, the port will be set to be a member of that VLAN ID, and the
port will be forced into VLAN unaware mode. Once assigned, all traffic arriving on the port will be
classified and switched on the RADIUS-assigned VLAN ID.
If (re-)authentication fails or the RADIUS Access-Accept packet no longer carries a VLAN ID or it’s
invalid, or the supplicant is otherwise no longer present on the port, the port’s VLAN ID is immediately
reverted to the original VLAN ID (which may be changed by the administrator in the meantime without
affecting the RADIUS-assigned).
This option is only available for single-client modes:
 Port-based 802.1X
 Single 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.
RADIUS attributes used in identifying a VLAN ID:
RFC2868 and RFC3580 form the basis for the attributes used in identifying a VLAN ID in an Access-
Accept packet. The following criteria are used:
 The Tunnel-Medium-Type, Tunnel-Type, and Tunnel-Private-Group-ID attributes must all be
present at least once in the Access-Accept packet.