1-10
Displaying and Maintaining Port Security Configuration To do... Use the command... Remarks
Display information about port
security configuration display port-security [ interface interface-list ]
Display information about
security MAC address
configuration
display mac-address security [ interface
interface-type interface-number ] [ vlan vlan-id ]
[ count ]
Available in
any view
Port Security Configuration Example
Network requirements
Implement access user restrictions through the following configuration on Ethernet 1/0/1 of the switch.
z Allow a maximum of 80 users to access the port without authentication and permit the port to learn
and add the MAC addresses of the users as security MAC addresses.
z To ensure that Host can access the network, add the MAC address 0001-0002-0003 of Host as a
security MAC address to the port in VLAN 1.
z After the number of security MAC addresses reaches 80, the port stops learning MAC addresses. If
any frame with an unknown MAC address arrives, intrusion protection is triggered and the port will
be disabled and stay silent for 30 seconds.
Network diagram
Figure 1-1 Network diagram for port security configuration
Configuration procedure
# Enter system view.
<Switch> system-view
# Enable port security.
[Switch] port-security enable
# Enter Ethernet1/0/1 port view.
[Switch] interface Ethernet 1/0/1
# Set the maximum number of MAC addresses allowed on the port to 80.
[Switch-Ethernet1/0/1] port-security max-mac-count 80
# Set the port security mode to autolearn.
[Switch-Ethernet1/0/1] port-security port-mode autolearn
# Add the MAC address 0001-0002-0003 of Host as a security MAC address to the port in VLAN 1.