Quick Reference Guide

938 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Configuring 802.1X port security
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Configuring dynamic VLAN assignment for 802.1X ports
When a client successfully completes the EAP authentication process, the Authentication Server
(the RADIUS server) sends the Authenticator (the Dell device) a RADIUS Access-Accept message
that grants the client access to the network. The RADIUS Access-Accept message contains
attributes set for the user in the user's access profile on the RADIUS server.
If one of the attributes in the Access-Accept message specifies a VLAN identifier, and if this VLAN is
available on the Dell device, the client port is moved from its default VLAN to this specified VLAN.
NOTE
This feature is supported on port-based VLANs only. This feature cannot be used to place an
802.1X-enabled port into a Layer 3 protocol VLAN.
Automatic removal of dynamic VLAN assignments for 802.1X ports
For increased security, this feature removes any association between a port and a
dynamically-assigned VLAN when all 802.1x sessions for that VLAN have expired on the port.
NOTE
When a show run command is issued during a session, the dynamically-assigned VLAN is not
displayed.
Enable 802.1X VLAN ID support by adding the following attributes to a user profile on the RADIUS
server.
The device reads the attributes as follows:
• If the Tunnel-Type or the Tunnel-Medium-Type attributes in the Access-Accept message do not
have the values specified above, the Dell device ignores the three Attribute-Value pairs. The
client becomes authorized, but the client port is not dynamically placed in a VLAN.
• If the Tunnel-Type or the Tunnel-Medium-Type attributes in the Access-Accept message do have
the values specified above, but there is no value specified for the Tunnel-Private-Group-ID
attribute, the client will not become authorized.
• When the Dell device receives the value specified for the Tunnel-Private-Group-ID attribute, it
checks whether the <vlan-name> string matches the name of a VLAN configured on the
device. If there is a VLAN on the device whose name matches the <vlan-name> string, then
the client port is placed in the VLAN whose ID corresponds to the VLAN name.
• If the <vlan-name> string does not match the name of a VLAN, the Dell device checks whether
the string, when converted to a number, matches the ID of a VLAN configured on the device. If
it does, then the client port is placed in the VLAN with that ID.
• If the <vlan-name> string does not match either the name or the ID of a VLAN configured on
the device, then the client will not become authorized.
Table 6:
Attribute name Type Value
Tunnel-Type 064 13 (decimal) – VLAN
Tunnel-Medium-Type 065 6 (decimal) – 802
Tunnel-Private-Group-ID 081 <vlan-name> (string) – either the name or the number of a VLAN
configured on the Dell device.