Default Port Security Configuration; Port Security Configuration Guidelines - Cisco IE-4000 Software Configuration Manual

Configuring Port-Based Traffic Control
Information About Port-Based Traffic Control

shutdown vlan—Use to set the security violation mode per-VLAN. In this mode, the VLAN is error disabled instead of
the entire port when a violation occurs
Table 47 Security Violation Mode Actions
Violation Mode Traffic is
Forwarded
protect No
restrict No
shutdown No
shutdown vlan No
1. Packets with unknown source addresses are dropped until you remove a sufficient number of secure MAC addresses.
2. The switch returns an error message if you manually configure an address that would cause a security violation.
3. Shuts down only the VLAN on which the violation occurred.

Default Port Security Configuration

Feature
Port security
Sticky address learning
Maximum number of secure MAC
addresses per port
Violation mode
Port security aging

Port Security Configuration Guidelines


Port security can only be configured on static access ports or trunk ports. A secure port cannot be a dynamic access
port.

A secure port cannot be a destination port for Switched Port Analyzer (SPAN).

A secure port cannot belong to a Fast EtherChannel port group.
Voice VLAN is only supported on access ports and not on trunk ports, even though the configuration is allowed.

When you enable port security on an interface that is also configured with a voice VLAN, set the maximum allowed
secure addresses on the port to two. When the port is connected to a Cisco IP phone, the IP phone requires one
MAC address. The Cisco IP phone address is learned on the voice VLAN, but is not learned on the access VLAN. If
you connect a single PC to the Cisco IP phone, no additional MAC addresses are required. If you connect more than
one PC to the Cisco IP phone, you must configure enough secure addresses to allow one for each PC and one for
the phone.
Sends SNMP Sends syslog
1
Trap Message
No No
Yes Yes
No No
No Yes
Default Setting
Disabled on a port.
Disabled.
1
Shutdown. The port shuts down when the maximum number of secure MAC
addresses is exceeded.
Disabled. Aging time is 0.
Static aging is disabled.
Type is absolute.
Displays Error
2
Message
No
No
No
No
451
Violation Shuts Down
Counter Port
Increments
No No
Yes No
Yes Yes
3
Yes No