The Function of Dynamically-Learned MAC Addresses
Question
How does the dynamically-learned MAC address feature function?
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Explanations
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The dynamically-learned MAC address feature is a function in Cisco switches that allows the switch to automatically learn the MAC addresses of devices connected to its ports. This feature is essential for forwarding traffic between devices connected to different switch ports.
When a device is first connected to a switch port, the switch creates an entry in its Content Addressable Memory (CAM) table for that device's MAC address and associates it with the switch port. As traffic is transmitted between devices on the network, the switch uses the CAM table to determine which port to forward the traffic to.
The process of dynamically learning MAC addresses is triggered when the switch receives a frame from a device that is not already in the CAM table. The switch then examines the source MAC address of the frame and adds it to the CAM table along with the port it was received on.
Over time, the CAM table becomes populated with the MAC addresses of all devices connected to the switch. However, the CAM table has a limited size, and if it becomes full, the switch will have to start overwriting older entries with new ones.
In summary, the dynamically-learned MAC address feature in Cisco switches allows the switch to automatically learn the MAC addresses of connected devices and add them to its CAM table for efficient forwarding of traffic.
