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Use undo port-security intrusion-mode to restore the default.
Syntax
port-security intrusion-mode { blockmac | disableport | disableport-temporarily }
undo port-security intrusion-mode
Default
Intrusion protection is disabled.
Views
Layer 2 Ethernet interface view
Predefined user roles
network-admin
Parameters
blockmac: Adds the source MAC addresses of illegal frames to the blocked MAC address list and
discards frames with blocked source MAC addresses. This action implements illegal traffic filtering on the
port. A blocked MAC address is restored to normal after being blocked for 3 minutes, which is not user
configurable. To display the blocked MAC address list, use the display port-security mac-address block
command.
disableport: Disables the port permanently upon detecting an illegal frame received on the port.
disableport-temporarily: Disables the port for a period of time whenever it receives an illegal frame. You
can use the port-security timer disableport command to set the period.
Usage guidelines
To restore the connection of the port disabled by the intrusion protection feature, use the undo shutdown
command.
Examples
# Configure port GigabitEthernet 2/1/1 to block the source MAC addresses of illegal frames after
intrusion protection detects the illegal frames.
<Sysname> system-view
[Sysname] interface gigabitethernet 2/1/1
[Sysname-GigabitEthernet2/1/1] port-security intrusion-mode blockmac
Related commands
• display port-security
• display port-security mac-address block
• port-security timer disableport
port-security mac-address security
Use port-security mac-address security to add a secure MAC address.
Use undo port-security mac-address security to remove a secure MAC address.
Syntax
In Layer 2 Ethernet interface view:
port-security mac-address security [ sticky ] mac-address vlan vlan-id
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