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Does a network switch have a MAC address?
A MAC Address is given by the manufacturer and it is embedded in the chip that allows your device to connect to a network. For a network switch, it is likely to have many MAC addresses, since one MAC address is assigned to every interface on the switch.
When would you use a static MAC address?
You can control access to an interface on your Firebox by computer hardware (MAC) address. This feature can protect your network from ARP poisoning attacks, in which hackers try to change the MAC address of their computers to match a real device on your network.
Can you have a static public IP address?
A Public IP address (External) is assigned to every device that connects to the Internet and each IP address is unique. Therefore, there cannot exist two device with the same public IP address. A public IP address can be static, dynamic or shared.
How can I Make my Mac Address Table static?
A really simple method to deal with this issue is to manually configure entries in the MAC address table, a static entry will always overrule dynamic entries. You can either specify the interface where the MAC address is located or tell the switch to drop the traffic. Let’s look at an example!
How is a static MAC address different from a dynamic MAC address?
A Static MAC address is one that has been manualy input (typed via a command) into the CAM or MAC address table. A dynamic MAC address is one that has been learned via an arp request. For example if a switch learns the MAC address from another device then it has dynamically sourced the MAC address.
How does a MAC address table work on a switch?
Normally your switch will automatically learn MAC addresses and fill its MAC address table (CAM table) by looking at the source MAC address of incoming frames and flooding frames if it doesn’t know where to forward the frame.
Can a MAC address be entered into a multicast address?
You can also enter a MAC address, which is termed a static MAC address, into the table. These static MAC entries are retained across a reboot of the switch. In addition, you can enter a multicast address as a statically configured MAC address. A multicast address can accept more than one interface as its destination.