Optimizing Vietnam domestic network connection: solving slow speed problem??? Solution//Global IPLC

Optimizing Vietnam domestic network connection: solving slow speed problem??? Solution//Global IPLC service provider of Shigeng Communication

一、With the continuous deepening of economic and trade cooperation between China and Vietnam, more and more Chinese companies are setting up factories, offices, or service centers in Vietnam. However, the high latency, frequent disconnections, and insufficient bandwidth that Vietnamese users face when accessing domestic network services in China have become the core bottlenecks restricting business efficiency. According to the latest data, the average network latency from Vietnam to China is as high as 200-300ms, video conference lag rate exceeds 30%, and e-commerce platform order processing failure rate is as high as 18%. This article will delve into the root causes of the problem and provide a systematic solution from infrastructure to application layer.

1. Root of the problem: Why is Vietnam's connection to the domestic market so slow?

1. International bandwidth restrictions and submarine cable failures

Vietnam's international export bandwidth is limited, especially during peak business hours, where a large number of users accessing international networks simultaneously leads to bandwidth congestion becoming the norm. More seriously, submarine cable failures occur frequently:

In January 2023, the TGN-IA fiber optic cable in Singapore broke, resulting in complete data loss from Vietnam to Singapore

APG, AAG and other fiber optic cable failures have persisted for several months without repair, and international bandwidth resources are tight

In August 2025, although Vietnam opened its first onshore fiber optic cable directly to Singapore (VSTN), the overall international bandwidth capacity is still insufficient

2. Network routing detours and operator interconnection bottlenecks

Although China and Vietnam share a border, the network connection is not a straight line transmission:

International network bypass: Traffic from Vietnam to China may bypass Hong Kong, Singapore, and even Europe and America, significantly increasing latency

Poor interconnection among operators: The direct bandwidth between local ISPs in Vietnam (such as VNPT, Viettel, FPT) and China Telecom, China Unicom, and China Mobile is limited

Physical path detour: main Internet switching nodes are concentrated in Hanoi and Ho Chi Minh City, while submarine cable landing stations connecting China are mainly located in Taunton and Da Nang

3. Firewall strategy and peak hour congestion

GFW impact: The Chinese firewall may impose speed limits or interference on overseas IPs, affecting the stability of TCP connections

Peak hour congestion: International export bandwidth is prone to congestion during peak business hours, leading to skyrocketing packet loss rates and delays

Protocol instability: TCP port 443/80 may be randomly blocked, UDP protocol performs poorly

4. Infrastructure is inherently inadequate

The network infrastructure in some areas of Vietnam is still incomplete, which limits the efficiency of data transmission

Cross border data transmission requires passing through multiple international network nodes, each of which may become a bottleneck

2. Core solution: SD-WAN dedicated line technology

Why SD-WAN is the fundamental solution?

SD-WAN (Software Defined Wide Area Network) can significantly optimize cross-border network experience through intelligent routing and multi link aggregation technology

Technical advantages:

Intelligent path selection: Real time monitoring of the status of each link (delay, packet loss, jitter, load), automatically selecting the optimal path

Multi link aggregation: Integrating multiple types of lines such as land cables, submarine cables, 5G, etc., single line faults can be switched with zero perception

TCP optimization: Terminate TCP connections on Vietnamese clients and use optimized protocols for high-speed transmission

Cost effectiveness: Compared to traditional MPLS dedicated lines (with a monthly fee of over 120000 yuan), SD-WAN has a monthly fee of only 3000-8000 yuan

Actual test effect:

Delay reduction: from 280ms to 80-95ms, a decrease of 66%

Packet loss rate: reduced from>8% to<0.5%

Shake control:<15ms, ensuring smooth video conferencing

Business Enhancement: After deployment by a certain electronic manufacturing enterprise, the ERP system access speed increased by 60% and production interruption time decreased by 90%

2. SD-WAN Implementation Plan

Network architecture design:

1 [Vietnam factory] -- Room -- Local Internet access (main) 2--4G/5G backup link 3 L -- SD-WAN edge device 4 │ 5 ▼ 6 [Hong Kong/Guangxi POP point] ← Intelligent routing engine 7 │ 8 ▼ 9 [China headquarters] -- SD-WAN edge device

Key deployment steps:

Site selection of POP points: Priority should be given to Hong Kong or Guangxi as transit nodes (Vietnam → Hong Kong delay stabilizes at 40-50ms)

Equipment deployment: SD-WAN edge devices deployed at headquarters in Vietnam and China

Strategy configuration: Set business priority (ERP/OA>video conferencing>file transfer>regular browsing)

Monitoring optimization: Real time monitoring of network quality and dynamic adjustment of routing strategies

Conclusion

Optimizing the network connection between Vietnam and the domestic market is a systematic project that requires comprehensive consideration of multiple dimensions such as technology, cost, compliance, and security. SD-WAN dedicated line technology, with its advantages of intelligent routing, multi link aggregation, and high cost-effectiveness, has become the preferred solution for solving cross-border network problems. With the continuous promotion of infrastructure interconnection between China and Vietnam, the future network connectivity experience will be further improved.

二、Shigeng Communication Global Office Network Products:

The global office network product of Shigeng Communication is a high-quality product developed by the company for Chinese and foreign enterprise customers to access the application data transmission internet of overseas enterprises by making full use of its own network coverage and network management advantages.

Features of Global Application Network Products for Multinational Enterprises:

1. Quickly access global Internet cloud platform resources

2. Stable and low latency global cloud based video conferencing

3. Convenient and fast use of Internet resource sharing cloud platform (OA/ERP/cloud storage and other applications

Product tariff: