Sau đây, là phần tóm tắt một số ý chính về phần Switch (SV cố gắng dich các thuật ngữ tiếng anh phổ biến liên quan môn học)

chức năng của switch:

switch: Layer 2:

+ If the destination MAC address is found in the CAM table, the switch sends the frame out the port that is associated with that destination MAC address in the CAM table. This process is called forwarding.

+ If the associated port to send the frame out is the same port that the frame originally came in on, there is no need to send the frame back out that same port, and the frame is ignored. This process is called filtering.

+ If the destination MAC address is not in the CAM table (that is, unknown unicast), the switch sends the frame out all other ports that are in the same VLAN as the received frame. This is called flooding. It does not flood the frame out the same port on which the frame was received.

+ If the destination MAC address of the received frame is the broadcast address (FFFF.FFFF.FFFF), the frame is sent out all ports that are in the same VLAN as the received frame. This is also called flooding. The only exception is the frame is not sent out the same port on which the frame was received.