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How do I set a static MAC address on a switch?
In the MAC Address text box, type the MAC address of the VLAN interface on the Cisco switch that is connected to the external interface. Click OK. The static ARP entry is added to the Static ARP Entries list. Click Add.
How does a switch store physical addresses MAC addresses?
Switches need to keep track of the MAC addresses of all connected devices. Without the learning function, the switch would not know to which port the destination device is connected. As the switch receives a data packet, it reads the source address and maps the port number to the MAC address in that source field.
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.
Where are the MAC addresses on a switch?
The MAC addresses are from hosts connected to the ports. The CPU port is the switch itself. Static MAC addresses in the MAC address table were manually configured. The dynamic entries in the MAC address table will time out after a while.
Where does the MAC address table come from?
The MAC address table relates the source MAC addresses for frames which have come into a port with the port. This lets the switch know to which port it should send frames with that destination MAC address. The MAC addresses are from hosts connected to the ports. The CPU port is the switch itself.
Do you need MAC address for L3 switch?
Yes, each switchport has it’s own MAC address, I think this is how the switch itself (ASICS) makes forwarding decisions. Not quite sure tho, there isn’t too much info on this I could find on the fly. If you are using a L3 switch, every port can be configured as a routed port which needs a MAC address. HTH Expand Post