Introduction and Comparison of China Unicom's AS4837 Line, AS9929 Line and CUVIP Line

China Unicom is one of the three major telecom operators in China and has many international export lines, among which AS4837, AS9929 and CUVIP lines are of great concern. This paper will introduce the characteristics of the three lines and make a comparative analysis.

1、 China Unicom AS4837 line

AS4837 is a backbone network line of China Unicom, also known as China 169 backbone network. The line was built in the 1990s, connecting mainland China with Hong Kong, the United States, Japan, South Korea and other places. The AS4837 line adopts advanced network technology, with sufficient bandwidth, good network stability and low delay, which is about 150ms on average.

The main advantages of AS4837 line are good network quality and strong connectivity. Among the three major domestic operators, China Unicom has the largest international export bandwidth, and most of them are directly connected with Tier1 level international operators, making it easier to obtain high-quality international connectivity. However, compared with other lines, the AS4837 line has less IPv4 address resources allocated domestically, and there are not many address segments allocated under IPv6.

2、 China Unicom AS9929 line

The AS9929 line is an IP transmission service line launched by China Unicom for the international market. The line originates from Hong Kong, connects the Asia Pacific region and North America through submarine optical cables, and has several POP points in Europe and Africa. The AS9929 line adopts SDH optical fiber transmission technology, with high bandwidth and low delay, averaging about 120ms.

The AS9929 line is positioned in the high-end market. The bandwidth quality and service quality are guaranteed, so the price is relatively high. This line is mainly for multinational enterprises, financial institutions and other customers, providing international data transmission, data center interconnection, cloud services, etc. Compared with AS4837 line, AS9929 line is more personalized and diversified in service.

3、 CUVIP line of China Unicom

CUVIP is an international boutique network service launched by China Unicom, which provides high-speed, safe and stable international interconnection services for high-end users. The biggest difference between CUVIP lines and AS4837 and AS9929 lines is that CUVIP lines use MPLS technology to realize end-to-end private network connection. Users can choose public network access or private line access, and realize interconnection with CUVIP lines through IPSec, SSL and other ways.

CUVIP lines are characterized by high bandwidth, low delay and global coverage. Thanks to the global network resources of Unicom, CUVIP lines can provide global network interconnection, and the delay can be controlled within 100ms. In addition, CUVIP lines also provide a variety of value-added services, such as load balancing, firewall, traffic cleaning, etc., to ensure the network security of users.

4、 Comparison of three lines

From the above analysis, we can see that China Unicom AS4837, AS9929 and CUVIP have their own characteristics. In terms of bandwidth quality, AS9929 line and CUVIP line are better than AS4837 line; In terms of time delay, CUVIP line is the best, followed by AS9929 line, and AS4837 line is relatively high; From the perspective of line resources, the AS4837 line has the least IP address resources available in China; In terms of service content, CUVIP line provides the most abundant value-added services, followed by AS9929 line and AS4837 line; From the price point of view, CUVIP line and AS9929 line are positioned at the high-end with high prices, while AS4837 line is relatively affordable.

Therefore, users should consider comprehensively according to their own business needs and budget when selecting lines. If you want high bandwidth, low latency, global coverage, and have enough budget, you can choose CUVIP lines; If the bandwidth and delay requirements are not too high and the budget is limited, the AS4837 line can be selected; If it is between the two and you need personalized service, you can choose the AS9929 line.

To sum up:

1. Line quality: CUVIP line>AS9929 line>AS4837 line.
2. International visit: CUVIP line ≈ AS9929 line>AS4837 line. The international visit performance of CUVIP and AS9929 lines is similar, significantly better than that of AS4837 lines.
3. Price: CUVIP line>AS9929 line>AS4837 line. The better the line quality, the higher the price.

The above is the introduction and comparative analysis of China Unicom's AS4837, AS9929 and CUVIP lines. With the continuous development of Internet technology, international export routes are also being upgraded, and there will be more route options in the future. Users should pay close attention to the line dynamics and select the optimal line scheme according to the actual needs to improve the network transmission quality and user experience.