The difference between virtual machine routing and physical routing

The difference between virtual machine routing and physical routing is that virtual routers are established in the form of wireless networks, while traditional routers are connected to routers through network cables, which is relatively stable. Virtual machine routing, also known as one-arm routing, refers to the interconnection between different VLAN that are isolated from each other by configuring subinterfaces on one interface of the router.

In Cisco network authentication system, one-arm routing is an important learning knowledge point. Through the study of one-arm routing, we can deeply understand the division, encapsulation and communication principle of VLAN, and understand the router subinterface, ISL protocol and 802. 1Q protocol commonly used in CCNA examination.

Virtual machine definition

Virtual machine network refers to a network platform constructed by a complete computer system which is simulated by software, has complete hardware system functions and runs in a completely isolated environment.

Generally speaking, the network we understand is a local area network (LAN) built by multiple computers, and then multiple LANs are connected to form the largest WAN. Through virtual machines, we can virtualize many hosts on one computer, as long as your real host configuration is sufficient.