Can the same MAC address be used for multiple devices?
If two devices have the same MAC Address (which occurs more often than network administrators would like), neither computer can communicate properly. Duplicate MAC Addresses separated by one or more routers is not a problem since the two devices won’t see each other and will use the router to communicate.
When port-security is enabled on an interface by default how many MAC addresses are allowed to connect?
1
The default address-limit is 1 but may be set for each port to learn up to 64 addresses. The default action is none. When learn-mode is set to static , configured , or limited-continuous , the address-limit parameter specifies how many authorized devices (MAC addresses) to allow.
How do I enable port-security on a dynamic port?
Configuration Steps: 1) Your switch interface must be L2 as “port security” is configure on an access interface. You can make your L3 switch port to an access interface by using the “switchport” command. 2) Then you need to enable port security by using the “switchport port-security” command.
Which device would you use to configure port security?
What can you do? Configure port security on the switch. You’ve just enabled port security on an interface of a Catalyst 2950 switch. You want to generate an SNMP trap whenever a violation occurs.
What are the three types of port-security?
On Cisco equipment there are three different main violation types: shutdown, protect, and restrict.
How can I allow the same MAC address on different VLANs?
That defeats the purpose of one aspect of port security: If traffic with a secure MAC address that is configured or learned on one secure port attempts to access another secure port in the same VLAN, applies the configured violation mode.
How is port security used without specifying MAC addresses?
Port security can be used without specifying exact MAC addresses. A port can dynamically learn a MAC address, and keep it on that port for a specified time period.
How can I allow the same MAC address on different devices?
You can statically configure all secure MAC addresses by using the switchport port-security mac-address mac_address interface configuration command. You can allow the port to dynamically configure secure MAC addresses with the MAC addresses of connected devices.
Can a port security violation cause excessive CPU load?
When the protect or restrict violation modes are configured, port security continues to process traffic after a violation occurs, which might cause excessive CPU load. Configure the port security rate limiter to protect the CPU against excessive load when the protect or restrict violation modes are configured.