Learn more about the functions and differences between vrouters and vswitches

Recently, I have seen many people asking what the vswitch and vro are, what are their functions, and what are their differences. I will give some simple answers to these questions.

First, the role of a switch (also known as a switch-type hub) can be simply understood as connecting some machines to form a LAN. A vro differs significantly from a vswitch. Its function is to connect different network segments and find the most suitable path for data transmission in the network. In general, individual users have little need. A vro is generated after a vswitch, just as a vswitch is generated after a hub. Therefore, the vro and vswitch are also associated, and they are not completely independent of each other. Vro mainly overcomes the problem that vswitches cannot route and forward data packets.

At present, I am personally using ADSL for many broadband access methods. Therefore, I will give a brief description of the access to ADSL. Most of the purchased ADSL cats have the routing function (in many cases, the routing function is blocked when the manufacturer leaves the factory, because the routing function is not enabled during Telecom installation and DHCP is enabled. Enable the ADSL routing function). If an individual accesses the Internet or a few computers pass through ADSL, you only need to purchase one or more hubs or switches if the computer is large.

Please purchase a vswitch because the price difference between the hub and the vswitch is very small. There is no need to pursue high prices, because product homogeneity is very serious today, and there is no problem with my cheapest switch. We recommend that you purchase an eight-port service to meet the expansion requirements. The general price is about 100 yuan. Connect all the computers to the vswitch. The only thing to do is to insert the network cable of each machine into the interface of the switch and insert the cat network cable into the uplink interface. Then you can set the routing function and DHCP to share the internet.

After reading the above explanation, you should have some knowledge about vswitches and vrouters. The current usage is mainly based on the combination of vswitches and vrouters, the specific combination method can be determined based on the specific network conditions and requirements.

Differences between vswitches and vrouters

A computer network is often composed of many different types of network connections. If several computer networks are physically connected together and cannot communicate with each other, then this "interconnection" is meaningless. Therefore, when talking about "interconnection", it is suggested that these computers can communicate with each other. That is to say, in terms of functions and logic, these computer networks have formed a large computer network, or an interconnected network, or Internet.

Some intermediate devices (or intermediate systems) are used to connect networks. ISO is called Relay Systems. Based on the level of the relay system, there can be the following five relay systems:

1. Physical Layer (that is, the first layer and layer L1) repeater system ).
2. data link layer (Layer 2, layer l2), that is, bridge or bridge ).
3. The network layer (Layer 3, layer l3) relay system, that is, the router ).
4. A mixture of bridges and routers. brouter has the functions of bridges and routers.
5. A relay system above the network layer, that is, a gateway ).

When the relay system is a forwarder, it is generally not called network interconnection, because it only expands a network, and it is still a network. High-level gateways are rarely used due to their complexity. Therefore, network interconnection generally refers to the network in which vswitches and vrouters are interconnected. This article describes the differences between vswitches and vrouters.