You can configure a number of addresses and allow the rest to be dynamically configured.You can allow the port to dynamically configure secure MAC addresses with the MAC addresses of connected devices.You can configure all secure MAC addresses by using the switchport port-security mac-address mac_address interface configuration command.If a port is configured as a secure port and the maximum number of secure MAC addresses is reached, when the MAC address of a workstation attempting to access the port is different from any of the identified secure MAC addresses, a security violation occurs.Īfter you have set the maximum number of secure MAC addresses on a port, the secure addresses are included in an address table in one of these ways:
If you limit the number of secure MAC addresses to one and assign a single secure MAC address, the workstation attached to that port is assured the full bandwidth of the port. When you assign secure MAC addresses to a secure port, the port does not forward packets with source addresses outside the group of defined addresses. You can use the port security feature to restrict input to an interface by limiting and identifying MAC addresses of the workstations that are allowed to access the port.
Port Unicast and Multicast Flood Blocking.Understanding and Configuring Dynamic ARP Inspection.Configuring DHCP Snooping and IP Source Guard.Understanding and Configuring 802.1X Port-Based Authentication.
Understanding and Configuring IP Multicast.Configuring 802.1Q and Layer 2 Protocol Tunneling.Configuring IGMP Snooping and Filtering.Understanding and Configuring EtherChannel.Understanding and Configuring Multiple Spanning Trees.Configuring Layer 2 Ethernet Interfaces.Environmental Monitoring and Power Management.Configuring Supervisor Engine Redundancy using RPR and SSO.Configuring the Switch for the First Time.