Contents
What is stored in a MAC address table?
The address table lists the destination MAC address, the associated VLAN ID, and port number associated with the address and the type (static or dynamic). MAC address table management can be used with the STP, MSTP, and REP features.
Can 2 routers have the same MAC address?
If two devices have the same MAC Address (which occurs more often than network administrators would like), neither computer can communicate properly. Duplicate MAC Addresses separated by one or more routers is not a problem since the two devices won’t see each other and will use the router to communicate.
How does the MAC address table work on a switch?
The switch records host MAC addresses that are visible on the network, and maps those MAC addresses to its own Ethernet switch ports. This process is called building the MAC address table. When a switch receives a frame from a PC, it examines the frame’s source and destination MAC addresses.
How does a switch learn a MAC address not in its lookup?
3 Answers. When a switch receives a frame, it updates its MAC address table with the source MAC address and the port on which it received the frame. If the destination MAC address isn’t in its MAC address table (unknown unicast), it floods the frame to all ports, except the port on which the frame was received.
How does a switch learn a switch table?
When a frame is received, the switch compares the SOURCE MAC address to the MAC address table. If the SOURCE is unknown, the switch adds it to the table along with the port number the packet was received on.
How to record network device MAC address table?
Step 1: Record network device MAC addresses. Open a command prompt on PC-A and PC-B and type ipconfig /all. What are the Ethernet adapter physical addresses? Answers will vary. Console into switch S1 and S2 and type the show interface F0/1 command on each switch.