With the increasing demand of users in mainland China for access to overseas content, deploying CN2 VPS servers in nearshore areas has become an important means to improve access speed and ensure stable connection. Among the many optional nodes, "Japan dual-line CN2" and "Hong Kong CN2 VPS" are undoubtedly the two most discussed directions. Both have the ability to return to China via telecom optimized lines (CN2 GT/GIA), but there are still differences in access speed, stability, latency performance, anti-interference ability and adaptation scenarios.
1. Network structure comparison: the difference between CN2 dual-line and single-line
CN2 line is a high-quality backbone network channel launched by China Telecom, mainly divided into CN2 GT and CN2 GIA. In Japan and Hong Kong, some VPS service providers have adopted a dual-line strategy, supporting telecom CN2 backhaul + China Unicom/Mobile optimization to improve the overall connection experience across the country.
Hong Kong CN2 VPS usually gives priority to using CN2 GIA to return to China, and some service providers can even achieve three-network CN2 optimization. Japan dual-line CN2 VPS generally refers to the backhaul support Telecom CN2 + Unicom AS9929 or CMI (China Mobile International) simultaneous access, forming a return path option covering three networks.
2. Comparison of access delay and packet loss rate
For services for mainland users, delay and stability are the core indicators to measure the quality of VPS.
1. The average delay of Hong Kong CN2 VPS is as low as less than 15ms (depending on the user's area); suitable for highly interactive businesses such as trading systems, live broadcasts, and API interfaces; susceptible to congestion between operators during peak hours, and the packet loss rate slightly increases in some time periods;
2. Japan dual-line CN2 VPS
The average access delay in East China and Northeast China is 35ms-50ms; China Unicom/Mobile access is more stable, especially the return performance in the direction of China Unicom is better than Hong Kong; peak congestion is slightly less than Hong Kong, and the packet loss rate is lower;
Comparison conclusion:
If you pursue extreme delay, and the main customers are concentrated in South China: Hong Kong CN2 VPS has more advantages; if it is for national users, especially covering users of multiple operators: Japan dual-line CN2 VPS is more balanced.
III. Bandwidth quality and price comparison
Although both types of nodes support CN2 high-quality lines, there are obvious differences in bandwidth scheduling and pricing mechanisms.
Hong Kong CN2 VPS usually provides bandwidth ranging from 5M to 20M by default, and some merchants support exclusive use; high bandwidth is expensive, and prices above 100M are generally high; speed limits may be imposed during peak hours, and some service providers have bandwidth competition problems;
Japan's dual-line CN2 VPS generally has a starting bandwidth of 10M or above, and some can support peak values of 50M or 100M; compared with Hong Kong, bandwidth prices are more friendly and cost-effective; many merchants adopt a large bandwidth + sharing strategy, and have stronger burst traffic processing capabilities.
Comparison conclusion:
If you need to deploy video content, download distribution, and mirror acceleration services, Japan's dual-line CN2 VPS can better meet the bandwidth cost-effectiveness requirements; and for system services with small bandwidth and high connection stability, Hong Kong CN2 VPS is still suitable.
Whether it is Hong Kong CN2 VPS or Japan's dual-line CN2 VPS, its core advantage lies in providing an optimized mainland return network, reducing access hops and delays, and improving network availability. Hong Kong has an advantage in latency due to its geographical and network proximity; Japan, on the other hand, is suitable for more complex deployment requirements due to its wider coverage of dual-line access, stronger network stability and anti-blocking capabilities.
It is recommended that enterprises or developers make scientific choices based on the user area, bandwidth requirements, content sensitivity and other dimensions of the business, and build a long-term and stable server service architecture through actual testing and multi-node redundant deployment strategies.
