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What does a switch do if it doesnt find the destination MAC address?
If the source MAC address for a packet is not known by the switch, then the switch will learn the MAC address and point it to the interface that the packet arrived on. If the destination MAC address is not known by a switch, then the packet will be flooded to all unblocked ports.
What does a switch do with an unknown source MAC address?
If the destination MAC address is in the table, it will forward the frame out the specified port. If the destination MAC address is not in the table, the switch will forward the frame out all ports except the incoming port. This is known as an unknown unicast.
What does a switch do with a frame when the destination MAC address is not present in the MAC address table?
In case the switch does not find the source MAC address, it forwards the frame to the next link and adds the MAC information of the source in its MAC table.
Can a switch forget a MAC address?
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. At the center of the learning function is a part of the switch’s memory. The same MAC address will appear on both Port 1 and Port 2.
What does a switch do when the destination MAC address is?
The switch will use this MAC address table to look up the destination MAC address to see if it has a destination interface for the frame. If not, it floods the frame to all other interfaces.
Why is there no MAC address on my switch?
Flooding to an unknown destination has nothing to do with how the switch learns MAC addresses. It may help with how we get the server to send something. But flooding to unknown destination does not, by itself, help the switch learn the MAC address.
Is it possible for a switch to learn the MAC address?
But flooding to unknown destination does not, by itself, help the switch learn the MAC address. And you paint yourself further into a corner when you say:”the server that he’s having problems with does NOT have to be the one to send traffic for the mac address to be learned”.
What happens when a switch receives a packet with an..?
If the destination MAC address is not in the table, the switch will forward the frame out all ports except the incoming port. This is known as an unknown unicast. If the destination MAC address is a broadcast or a multicast, the frame is also flooded out all ports except the incoming port.