its an totally bakwass site
It duplicates the frame to all Ethernet ports, except the port it came from. A switch's MAC table is built not from destination addresses it receives, but by the source MAC addresses. So the frame is broadcast throughout the broadcast domain, until the end device with a matching MAC address responds to the broadcast, thus giving the switch a new source address to add to its MAC table.
address resolution protocol is used when the switch used to build the dynamic mac address table.
BRIDGE
A switch would record multiple entries for a single switch port in its MAC address table if it does not contain the Mac address of a particular destination in the address table. It will broadcast to all ports besides the port where entry comes from.
Source MAC address and source port
Mac address
The "MAC" address of your computer is built into the Ethernet board.
A switch builds a MAC address table, which contains the MAC addresses of devices connected to its ports along with the corresponding port numbers. When a switch receives a data frame, it reads the source MAC address and updates its table if the address is not already present. To send data to a specific device, the switch looks up the destination MAC address in its table and forwards the frame out of the appropriate port associated with that address. If the destination address is not found, the switch broadcasts the frame to all ports except the one it received it on.
Power cycle the switch to clear all dynamically learned addresses, and the clear mac address table command will remove statically and dynamically configured table entires
by reading the source hardware address of a frame
show mac address table
Final Destination Address