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Configuring a MAC authentication critical VLAN
You must configure the MAC authentication critical VLAN on a hybrid port. Before you configure the
MAC authentication critical VLAN on a hybrid port, complete the following tasks:
• Enable MAC authentication globally and on the port.
• Enable MAC-based VLAN on the port.
• Create the VLAN to be specified as the MAC authentication critical VLAN.
• Configure the VLAN as an untagged member on the port.
When you configure the MAC authentication critical VLAN on a port, follow the guidelines in Table
15.
Table 15
Relationships of the MAC authentication critical VLAN with other security features
Feature Relationship description Reference
Quiet feature of MAC
authentication
The MAC authentication critical VLAN feature has
higher priority.
When a user fails MAC authentication because no
RADIUS authentication server is reachable, the
user can access the resources in the critical
VLAN. The user's MAC address is not marked as
a silent MAC address.
See "Configuring MAC
authe
ntication timers."
Super VLAN
You cannot specify a VLAN as both a super VLAN
and a MAC authentication critical VLAN.
See Layer 2—LAN
Switching Configuration
Guide.
Port intrusion protection
The critical VLAN feature has higher priority than
the block MAC action but lower priority than the
shutdown port action of the port intrusion
protection feature.
See "Configuring port
security."
To configure the MAC authentication critical VLAN on a port:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter Ethernet interface
view.
interface
interface-type
interface-number
N/A
3. Specify the MAC
authentication critical
VLAN on the port.
mac-authentication critical vlan
critical-vlan-id
By default, no MAC authentication
critical VLAN exists.
You can configure only one MAC
authentication critical VLAN on a
port.
Enabling the MAC authentication critical voice
VLAN
Configuration prerequisites
Before you enable the MAC authentication critical voice VLAN on a port, complete the following
tasks:
• Enable LLDP both globally and on the port.