Cisco Systems 3560X Manual De Usuario
28-11
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
OL-21521-01
Chapter 28 Configuring Port-Based Traffic Control
Configuring Port Security
Default Port Security Configuration
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.
dynamic access port.
•
A secure port cannot be a destination port for Switched Port Analyzer (SPAN).
•
A secure port cannot belong to a Gigabit EtherChannel port group.
Note
Voice VLAN is only supported on access ports and not on trunk ports, even though the
configuration is allowed.
configuration is allowed.
•
A secure port cannot be a private-VLAN port.
•
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
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
Table 28-1
Security Violation Mode Actions
Violation Mode
Traffic is
forwarded
forwarded
1
1. Packets with unknown source addresses are dropped until you remove a sufficient number of secure MAC addresses.
Sends SNMP
trap
trap
Sends syslog
message
message
Displays error
message
message
2
2. The switch returns an error message if you manually configure an address that would cause a security violation.
Violation
counter
increments
counter
increments
Shuts down port
protect
No
No
No
No
No
No
restrict
No
Yes
Yes
No
Yes
No
shutdown
No
Yes
Yes
No
Yes
Yes
shutdown vlan
No
Yes
Yes
No
Yes
No
3
3. Shuts down only the VLAN on which the violation occurred.
Table 28-2
Default Port Security Configuration
Feature
Default Setting
Port security
Disabled on a port.
Sticky address learning
Disabled.
Maximum number of secure
MAC addresses per port
MAC addresses per port
1.
Violation mode
Shutdown. The port shuts down when the maximum number of
secure MAC addresses is exceeded.
secure MAC addresses is exceeded.
Port security aging
Disabled. Aging time is 0.
Static aging is disabled.
Type is absolute.