Special routing technology to prevent Internet cafe routers from being dropped

With the development of China's routing industry, it has also promoted the wide application of Internet cafe routers. Here we mainly explain the special technology of Internet cafe routers, so that Internet cafe routes are not dropped. As we all know, if you want to access the Internet from an internal PC, you need to set the IP address of the PC and the gateway address. The gateway address here is the IP address of the Intranet interface of the Internet cafe router. How does the internal PC Access the external network? The internal network of the NBR.

After the NAT address is forwarded by the NBR Internet cafe router, the packet is sent to the external network, and the external packet is returned to query the NAT Link Inside the internet cafe router, send it back to the relevant internal PC to complete a network access. There are two addresses on the network, one is the IP address, the other is the MAC address, and the MAC address is the physical address of the network. To send packets to the Gateway in the internal PC, first according to the IP address of the gateway, query the MAC address of the NBR through ARP, and then send the packet to the MAC address. The MAC address is the physical layer address. All packets must be sent and eventually sent to the corresponding MAC address.

Therefore, there is an ARP ing relationship between each PC, that is, the corresponding table of IP addresses and MAC addresses. These ing relationships are updated through ARP and RARP packets. Currently, there is a virus on the network that sends fake ARP packets, such as ARP packets sent from the gateway IP address, which maps the gateway IP address to its MAC address, or a non-existing MAC address, and broadcast the fake ARP packet in the network, all the internal PCs will update the corresponding table of the IP address and MAC, next time you access the Internet, the packet sent to the gateway's MAC address will be sent to a non-existent or incorrect MAC address, which will cause a disconnection. This is ARM address spoofing. This is the cause of disconnection between the internal PC and the external network. The virus has been rampant for a while. In this case, the anti-ARP Address Spoofing feature has also appeared on some professional router products.

Server Load balancer and line backup

For example, ruijie RG-NBR series of Internet cafe routers all support VRRP hot backup protocol, up to 2 to sets of Internet cafe routers, and link 2 to 25 5 broadband lines, between these NBR and broadband lines, server Load balancer and line backup are implemented. If the line is disconnected or the network device is damaged, the backup can be automatically implemented. When both the online and network devices are normal, Server Load balancer can be implemented. This function is supported on all vrouters of ruijie.

RG-NBR series of Internet cafe router in the RG-NBR1000E, but also provides 2 WAN port, if necessary, there is a module expansion slot, you can plug in the electrical port or optical interface module, link three broadband lines at the same time. Load Balancing and line backup can be achieved between these three broadband lines. Load Balancing Based on bandwidth can also be performed on internal PCs, you can also set the access to Netcom resources to go through the China Netcom line, and access to the load balancing of telecom resources to go through the China Telecom line.

Comprehensive Performance

The Internet cafe router is very complicated, so it cannot stand out in some aspects alone. It also requires comprehensive development in performance, functions, security, and other aspects to make full use of its advantages, it briefly describes the performance of "multiple, fast, good, saving, stable, simple, static, and strong", 8-Legged Walking, stable, tens of thousands of concurrent NAT links, and line-rate download, simple configuration, quiet usage, adaptability to harsh environments, internal speed limiting, telecom-grade network operating systems, and stable application in demanding environments, these powerful comprehensive performance can make an excellent Internet cafe router.

Nowadays, Internet cafe routers are constantly improving their software design to adapt to the development and changes of Internet cafe applications. The features we introduce today are of course very practical, however, at the same time, it is still necessary for Internet cafe management and technical personnel to learn more about the new functions and New Routing Technology of Internet cafe routers, improve their capabilities, and perform more scientific and reasonable network management settings, in this way, a non-dropped Internet cafe router can work together to create a non-dropped Internet cafe.