Cisco device vlan, trunk, and Ethernet channel management

Cisco device vlan, trunk, and Ethernet channel management
Today, we will introduce some common basic operations on cisco devices, such as creating VLANs, binding network cables, and using trunk and layer-3 switches. This is the topology of today: two three-layer switches, two PCs added with vlan10 and 20 respectively, and two three-layer switches with network redundancy. Finally, the communication between the two PCs is very simple, however, an experiment is used: 1. after vlan2. is created in two L3 networks, add layer-3 Ethernet ports connected to the pc to vlan3. for two layer-3 Communication Ports, first configure dot1q (ISL and 802.1q are encapsulation types of network devices and are mainly used for vlan encapsulation. 802.1q is mainly used for vlan communication between devices of different brands and between devices of different layers.) 4. configure these interfaces as trunk ports (when the trunk link is used for multi-vlan communication. then, configure the ports to be connected to the two three layers as an Ethernet group, and logically bind them to a network cable (up to 8 at the same time) 6. the routing function is enabled for both layer-3 switches. if both network cables are normal, ping the other pc. disconnect a network cable and ping another pc. ping the other pc after both network cables are disconnected.