Shulou(Shulou.com)06/01 Report--

Plan if shown!

When all the devices are configured, look at the mac table of the switch and find that the switch has learned the mac address of the directly connected device.

So it is not what I imagined that the mac address table of the switch is blank when accessing. (the book says that the mac address table is blank when the switch is started. Why is this the result of the experiment? )

When R1 wants to ping R3, R1 needs to be encapsulated into a frame, so it will first send an arp broadcast request for the mac address of R3, and R3 will reply to R1 with the mac address (at this time, record the mapping between ip and mac of R1), successfully encapsulate the frame with the source destination mac, and then go to the switch according to the routing entry, and the switch forwards f0can2 according to the mac address table to find R3.

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