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#Ping switch for mac address and shiw which port update#The switch receives the packet, and it will learn the MAC address of the PC1, and it will update in the MAC address table. Since it’s a broadcast frame, it will be flooded to the network. It immediately generates an ARP packet with broadcast destination mac address and destination IP address with its own IP address 192.168.0.1.Īlso note that, in this packet, you can see the PC1 source MAC address and source IP address. MAC Address table Switch#show mac-address-table #Ping switch for mac address and shiw which port Pc#So there is no chance of learning PC MAC address by a switch.Īt this point, when we run the command in switch, then you will see no entry in the MAC address table. So it will drop the frames and never send back a reply switch. Īs you know, PC is a layer 3 device, and it has no service to accept Layer 2 protocol frames. These frames have a multi-cast destination MAC address, so these frames will be flooded to both PCs. Usually, the switch sends Layer 2 protocol frames like STP(Spanning-tree protocol), CDP(Cisco Discovery Protocol), and DTP(Dynamic Trunking Protocol)in periodic time intervals.
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