Comparative Selection And Performance Test Report On Vietnam Cn2 And Other Lines

title of this article: comparative selection and performance test report on vietnam cn2 and other lines. this article is intended for webmasters, operation and maintenance, and enterprise users who need to be in vietnam or connect to vietnam. it focuses on comparing the performance of cn2 and common hk/sg/international direct lines on vps/server/domain name resolution/cdn and high-defense ddos, and gives purchase suggestions.

test environment and method: we purchased vps with the same configuration (2vcpu, 4gb memory, 100gb ssd) in multiple computer rooms in vietnam, and launched cn2 dedicated line, hong kong direct connection, southeast asia transit (singapore) and international default lines respectively. use ping, mtr, iperf3, speedtest-cli, multi-point traceroute, and real website traffic observation (10 concurrency/10 minutes) to collect latency, jitter, packet loss rate and bandwidth stability data.

comparison of delay and packet loss: compared with traditional international transit, cn2 lines are generally more stable in rtt to mainland china, with low packet loss rate and small jitter. they are suitable for services with high real-time requirements (such as games, voice, and finance). hong kong/singapore lines generally have lower latency when facing southeast asia or international users, but packet loss and jitter to mainland china may be higher than cn2.

bandwidth throughput and actual speed: the iperf3 stress test shows that cn2 can still maintain good uplink/downlink stability during peak hours, with fewer tcp handshakes and retransmissions, and high long connection transmission efficiency. some international default lines have higher bandwidth limits for short bursts, but their stability and continuous transmission efficiency are inferior.

routing and bgp strategy: cn2 is a telecommunications optimized route. it usually reaches domestic core nodes through fewer transit ass, with fewer route hops and short quenching time. choosing a vps that supports bgp multi-line or customizable bgp communities helps flexibly switch high-quality paths between different destinations.

cdn and domain name resolution: for website services, relying solely on server bandwidth cannot solve the problem of global access experience. it is recommended that the origin site be cn2 or a high-defense host, combined with global/domestic cdn (supporting intelligent scheduling, node proximity) and reliable dns resolution (such as anycast dns) to reduce resolution delays and alleviate instantaneous traffic impact.

high-defense ddos capability evaluation: we added a small amount of simulated attack traffic to the test, and the results show that the high-defense provided by the supplier (cleaning by minute, cleaning by cluster, or mbps/gbps threshold) can effectively protect the cn2 origin site from common flooding attacks. when choosing high defense, pay attention to the cleaning mechanism, whitelist/geo-blocking, and the delayed impact after cleaning.

stability and operation and maintenance experience: in actual operation, cn2 lines are more reliable for cross-border finance, erp, voice and other businesses; however, during operation and maintenance, attention should be paid to the supplier's monitoring alarms, traffic reports and work order responses. choosing a service provider with 7x24 operation and maintenance, visual monitoring and traffic cleaning logs can significantly reduce troubleshooting costs.

cost and cost-effectiveness considerations: cn2 is usually more expensive than ordinary international lines, but for the target user group’s business in mainland china, the benefits brought by stability and controllability can often cover the cost difference. if the target users are mainly in vietnam/southeast asia, you can consider hk/sg lines or mixed multi-line solutions to reduce costs.

purchasing suggestions and configuration strategies: if the main service target is users in mainland china, give priority to cn2 or telecom direct connection products, and cooperate with domestic cdn and high-defense ddos. if your customers are distributed around the world or in many countries in southeast asia, you can choose a multi-line bgp + global cdn combination. when purchasing, be sure to confirm the actual arrival route of the line, cleaning threshold, bandwidth peak, and whether it supports fast switching and refund policies.

examples of practical recommended packages: it is recommended to purchase a vps with cn2 line (at least 2 cores/4gb/100gb ssd) + high-defense package (select 10gbps/20gbps as needed) + domestic/international cdn basic traffic package + anycast dns. in the early stage, you can choose a monthly payment trial and observe the actual jitter and packet loss data for 7-14 days before committing to a long-term contract.

tips on common misunderstandings: don’t place an order just based on the high speed of a single speedtest. long-term mtr packet loss and peak bandwidth stability are more important; don’t ignore the role of domain name resolution and cdn. simply changing lines cannot solve the global access experience problem.

conclusion: cn2 has obvious advantages when connecting to mainland china and is suitable for businesses with high requirements for stability, packet loss control and long-term connection transmission; other hk/sg or international lines may be more cost-effective when facing southeast asian or global users. when purchasing, it is recommended to choose a supplier with cn2 support, multi-line bgp, configurable high-defense and cdn integration for trial and verification.

purchasing recommendation: if you need a one-stop purchase of vps/server for cn2 lines, and want to obtain high-defense ddos, cdn integration and professional operation and maintenance support at the same time, it is recommended to give priority to the related products and services of dexun telecom. dexun telecom has a good reputation in terms of line resources, cleaning capabilities and after-sales response, and is suitable for users who require stable cross-border access and high protection capabilities.