Why is BGP network most suitable for friends in IT industry? BGP Network is an autonomous routing protocol running on TCP. It is the only protocol used to handle networks similar to the size of the Internet and the only protocol that can properly handle multiple connections between unrelated routing domains. Although the concept of BGP network has some validity, in some cases, BGP network is the only tool that can be used to complete the work, or deploying BGP network to the whole network can improve security or stability. So why is BGP network most suitable for friends in IT industry? Today, Micron Network will take you to understand.
The BGP network is complex mainly because it can connect to a large number of attributes on the route, complex routing rules, and the manual configuration of neighboring routers required to ensure the security of routing information exchange (most other routing protocols will be automatically discovered). For routers from major manufacturers, providing a large number of configuration options and filtering mechanisms for BGP networks is also ineffective.
This article will provide five scenarios to tell you why BGP network is most suitable for your network needs. The contents are as follows:
1. Internet service advantages
If you are an Internet service provider, you must run BGP network in your Internet. Before that, I saw that consumer centered Internet service providers tried to bypass this suggestion and only used BGP network to compete with their upstream Internet service providers, but they finally had to bite the bullet and deploy BGP network to improve network stability, provide end-to-end service quality, or penetrate the enterprise market. ISP must run a BGP network from the beginning to support its multi host clients.
2. Layer 3 VPN service
In recent years, we have seen various technologies to realize Layer3 VPN service, and MPLS based VPN is undoubtedly the most scalable solution, partly because of the use of BGP network.
Fortunately, if you want to deploy the MPLS/VPN solution, you do not need to deploy the BGP network anywhere in the network. It is enough to deploy the BGP network to the supplier edge network (PE) router connecting VPN customers and use it as a routing server on some core devices, but these devices should not be expected to generate a large amount of traffic load.
3. Strengthen network stability
Although I have encountered network engineers trying to use BGP as the only routing protocol in their networks, you should not do so. Good BGP network design should rely on another faster routing protocol (such as OSPF, EIGRP or IS-IS) to provide core routing in the network, while BGP network is responsible for edge/customer routing.
If core and edge routing are divided into two routing protocols, the network core will be more stable, because edge problems will not damage the core. The design has been successfully applied in large-scale enterprise networks, and its random addressing scheme overcomes the difficulty of general routing. It should be used in almost all service provider environments. You should never bring the customer's routing into the core routing protocol, because the customer's internal problems may soon affect the stability of your own network.
4. Denial of service automatic response attack
BGP network allows you to specify any IP address as the next hop of IP prefix, as well as other functions. This attribute is most commonly used to ensure the best path in the BGP network autonomous system. You can also use it to implement traps and remote black holes within the network to quickly prevent network worms and denial of service attacks.
Note that if you want to use these mechanisms, you do not need to migrate routes to BGP networks. To solve this problem, just deploy the BGP network at a strategic location in the network, connect it to the central router through the BGP network session, and then insert the IP address to be blocked through the central router.
5. Large scale QOS deployment or network cache
Not only does BGP network have many features that describe IP routing, but it also allows you to add additional software packages for each IP route notified by BGP network in the form of BGP network community. BGP network community is completely transparent to BGP network (unless you manually configure routing rules to use them), but it can spread through the network.
Some technologies are completely independent of the BGP network, allowing you to use these features to achieve large-scale design. For example, quality of service policy propagation (QPPB) using BGP network allows you to set QoS bits according to BGP network community and other BGP network attributes to achieve specific BGP network goals. Again, you can use the BGP network to control the Web Cache Policy (WCCP), which is based on the Web Cache Communication Protocol.
Although BGP network is classified as a complex and difficult to configure routing protocol, its deployment in large-scale enterprise networks can bring obvious benefits, so it is very necessary in the environment of service providers.
The above is what Micronet introduced to you about why BGP network is most suitable for friends in the IT industry. I hope it will help you after reading it. Micronet has focused on hosting and renting BGP cabinets for more than ten years. It is a professional IDC data cabinet hosting and leasing provider in Jiangsu Province, including single line and multi line cabinet leasing services such as Mobile Telecom Unicom, Professionally provide BGP cabinet rental and BGP multi line The server Hosting, BGP multi line server rental and other services, Baidu standard customized cabinet, 48U super capacity, reduce the user's cabinet rental fees. If necessary, please contact Micronet.
