E-link PoE Switche

With the development of information technology, virtualized network has shown great potential.Compared with traditional switches, virtual switches have advantages in many aspects. Therefore, the application of virtual switch technology in the future communication industry is imperative.

As the user access bandwidth from 10 m speed up to 100 m, all kinds of Internet, Internet of things such as edge from the network access load terminals and application, as the Internet application, telecommunications, self-supporting and key business overall carrying network, IP man facing traffic multiplication, IPv4 address exhaustion, low bearing demand differentiation, network, flexibility and security problems, to be the introduction of IPv6 / SDN/NFV/virtualization series technology such as network elements of deployment and network architecture and network control is optimized and adjusted.

In recent years, with the rapid development of information technology, network virtualization began to be more concern of the industry, virtual switches become the trend of the development of the communication, the function of the web server is currently supported virtual machine, server virtualization promoted the virtualization of computer network, when the physical server is streamlined, merge into the virtual platform, using virtualization technology to reuse the real physical device, to form virtual switches and other components to provide network services.Compared with traditional switches, virtual switches have more concise network functions on the data link layer. In the future, virtual switches will become the core of building virtual network platform.

According to the topology, the principle of virtual switch technology is relatively simple. In essence, the technology is to integrate multiple physical connections logically.The characteristic of this technology is that the reliability of communication is stronger, the working efficiency is also improved, and the bandwidth capacity of the system is also increased.Compared with traditional switches, virtual switches can not only realize the load balance and redundancy required by STP and VRRP protocols, but also reduce the number of network devices and simplify the network architecture, so as to relieve the pressure of system management and maintenance.

In the application mode of virtual switch technology, through the virtualization of SW1 and SW2, SW3 and SW4, SW5 and SW6, it is converted to a logical switch, namely SWA, SWB, SWC.For SWB, SW3 and SW4 can be regarded as connecting with the same switch WSA. The application of EtherChannel technology in this process eliminates the need for STP and VRRP protocols in the implementation of load balancing and redundancy. In this way, the switching loop in the network can be avoided and the network can be effectively simplified.