Switch principle and configuration

First, the switch is a typical data link layer hardware device, let’s first understand the functions of the data link layer;

2. The data link layer mainly encapsulates the MAC address;

3. Ethernet frame format:

Four. Introduction to switch equipment:


Fifth, the working principle of the switch



VI. Ethernet The working mode of the interface and their respective characteristics;



Seven, switch Configuration;

Eight, Cisco device command line mode relationship diagram; < br>