Type of industrial grade 4g router

Routers can be seen everywhere in various levels of the Internet. The access network allows homes and small businesses to connect to an Internet service provider; the router in the corporate network connects thousands of computers in a campus or enterprise; the router terminal system on the backbone network is usually not directly accessible, they Connect ISP and enterprise network on long-distance backbone network. The rapid development of the Internet has brought different challenges to backbone networks, enterprise networks and access networks. The backbone network requires routers to perform high-speed routing and forwarding on a few links. Enterprise-level routers not only require a large number of ports and low prices, but also require simple and convenient configuration, and provide QoS. Enterprise-level routers like Feiyuxing provide SmartQoSIII.

1. Enterprise router

Enterprise or campus-level routers are connected to many end systems. The main goal is to achieve as many endpoint interconnections as possible in the cheapest possible way, and further require support for different quality of services. Many existing enterprise networks are Ethernet segments connected by Hubs or bridges. Although these devices are cheap, easy to install, and require no configuration, they do not support service levels. On the contrary, a network involving routers can divide machines into multiple collision domains, and therefore can control the size of a network. In addition, the router also supports a certain level of service, at least allowing it to be divided into multiple priority levels. However, the cost of each port of the router is more expensive, and a lot of configuration work must be done before it can be used. Therefore, the success or failure of an enterprise router lies in whether it provides a large number of ports and the cost of each port is very low, whether it is easy to configure, and whether it supports QoS. In addition, enterprise-level routers are required to effectively support broadcast and multicast. Enterprise networks also need to deal with various LAN technologies left over from history and support multiple protocols, including IP, IPX and Vine. They also support firewalls, packet filtering, and a large number of management and security policies and VLANs.

2. Access router

The access router connects small business customers in the home or ISP. Access routers have begun to not only provide SLIP or PPP connections, but also support virtual private network protocols such as PPTP and IPSec. These protocols must be able to run on every port. Technologies such as ADSL will soon increase the available bandwidth of each household, which will further increase the burden on access routers. Due to these trends, the access router will support many heterogeneous and high-speed ports in the future, and be able to run multiple protocols on each port, while avoiding the telephone switching network.

3. Backbone router

The backbone router realizes the interconnection of enterprise-level networks. The requirements for it are speed and reliability, and the price is of secondary importance. Hardware reliability can be obtained by using technologies used in the telephone switching network, such as hot backup, dual power supplies, and dual data channels. These technologies are almost standard for all backbone routers. The main performance bottleneck of the backbone IP router is the time it takes to find a certain route in the forwarding table. When a packet is received, the input port searches for the destination address of the packet in the forwarding table to determine its destination port. When the packet is shorter or when the packet is sent to many destination ports, the cost of route lookup is bound to increase. Therefore, putting some frequently accessed destination ports in the cache can improve the efficiency of route lookup. Whether it is an input buffer or an output buffer router, there is a bottleneck problem in routing lookup. In addition to performance bottlenecks, router stability is also an often overlooked issue.

4. Terabit router

Among the three main technologies used in the core Internet in the future, both optical fiber and DWDM are mature and readily available. If there is no router corresponding to the original bandwidth provided by the existing optical fiber technology and DWDM technology, the new network infrastructure will not be able to fundamentally improve the performance, so the development of high-performance backbone switching/routers (terabit routers) has become An urgent request. Terabit router technology is still mainly in the experimental stage of development.

5. Multi-WAN Router

The dual WAN router has two physical WAN ports as external network access, so that the internal network computer can use the two external network access lines through the load balancing function of the dual WAN router at the same time, which greatly increases the network bandwidth. The current dual WAN routers mainly have the application advantages of “bandwidth convergence” and “one network, two lines”, which is not possible with traditional single WAN routers. To know more please visit https://www.e-lins.com/EN/