How to optimize network DNS settings for too laggy Team Meeting​??? Solution//Global IPLC service pr

How to optimize network DNS settings for too laggy Team Meeting??? Solution//Global IPLC service provider of Shigeng Communication

一、When using Microsoft Teams for meetings across borders, network latency and lag are common challenges. Although it appears to be a quality issue with audio and video, tracing the root cause, inefficient or malfunctioning DNS resolution is often one of the driving forces behind it. It is like an incorrect address in a courier system, causing data packets to take a detour or even get lost in the global network. Optimizing DNS settings can directly and effectively guide you to Teams server nodes that are closer and more responsive.

1. DNS: Neglected Network Bottleneck

Simply put, DNS is the process of converting the URL you input (such as

teams.microsoft.com

）A service that converts IP addresses that computers can understand. When the Teams client starts or joins a meeting, it needs to query DNS to find the nearest key service endpoints such as media servers and signaling servers.

If the DNS server responds slowly, is unstable, or provides an IP address that is not the optimal path, it can lead to:

Slow connection establishment: The conference joining time is too long.

High latency and jitter: Data packets require longer paths for transmission, resulting in unsynchronized sound and image.

Intermittent connection interruption: parsing failed, causing the service to temporarily disconnect.

Therefore, optimizing DNS is the first step towards improving the Teams experience with the highest cost-effectiveness and relatively simple operation.

2. Core solution: Comprehensive guide to optimizing DNS settings

Optimizing DNS mainly starts from two aspects: one is to configure a faster and more reliable public DNS server for your device; The second is to ensure the health of the local DNS cache.

The following are the specific steps to change the DNS server address on Windows 11 system, similar to the principle of other operating systems:

Operation steps, specific path, operation instructions, and suggestions

1. Open the Network Settings Start menu>Settings>Network and Internet>Ethernet (or WLAN). Click on the currently connected network. Make sure to set up the network connection to be used for Teams meetings.

2. Edit DNS allocation under "IP Allocation", click the "Edit" button. In the pop-up window, change "Automatic (DHCP)" to "Manual". Turn on the switch for manually configuring IPv4 and/or IPv6.

3. Fill in the preferred DNS column with a public DNS server address, for example:

**1.1.1.1**

(Cloudflare)。 This is the main DNS server used.

4. Fill in the alternate DNS column with another address, for example:

**8.8.8.8**

(Google)。 Automatically switch when preferred DNS fails to increase reliability.

5. Click "Save" to save the settings. The changes will take effect immediately and usually do not require a restart.

Recommended mainstream public DNS servers:

Cloudflare DNS (1.1.1.1 and 1.0.0.1): Known for speed and privacy protection, latency is typically low.

Google Public DNS (8.8.8.8 and 8.8.4.4): Widely distributed worldwide, with excellent stability and compatibility.

Quad9 (9.9.9.9): focuses on security and automatically blocks known malicious domains.

After completing the changes, it is recommended to open the command prompt as an administrator and enter

ipconfig /flushdns

And press enter to clear the local DNS cache that may contain old records, ensuring that the system immediately uses the new DNS server.

3. Advancement and troubleshooting: ensuring effective optimization

After completing the basic settings, you can verify the effectiveness through some methods and learn more advanced optimization ideas.

Verify DNS latency: using

ping

The command can easily test the response speed of DNS servers. For example, entering in the command prompt

ping 1.1.1.1

Observe the returned 'time' (usually in milliseconds). The lower the value, the smaller the delay. You can compare accessing Teams related domain names before and after changing DNS (such as

teams.microsoft.com

）The parsing speed.

Router level settings (affecting all devices): If you want all networked devices (computers, phones, tablets) in your home or office to benefit, you can log in to the router management backend (usually entered through a browser)

192.168.1.1

or

192.168.0.1

）, in WAN or Internet settings, change the DNS server address from "auto obtain" to the above public DNS address. This can speed up the entire network environment once and for all.

Advanced enterprise level considerations:

For large organizations with multiple branches, Microsoft recommends conducting more comprehensive network planning. This includes:

Configure "Split Tunnel VPN": Let the media traffic (especially UDP traffic) of Teams directly access the Internet without passing through the company VPN, which can greatly reduce latency and jitter.

Implement service quality strategy: Mark Teams' traffic with high priority (DSCP value) on network devices to ensure that conference audio and video can pass through first during busy network times.

Open necessary ports and domains: Ensure that the firewall allows Teams to use ports such as TCP 80, 443, and UDP 3478-3481, and

*.teams.microsoft.com

*.sfbassets.com

Waiting for key domain names.

If the problem persists after optimizing DNS, you can follow the following simple process to troubleshoot other common causes:

Check basic bandwidth: Use online speed measurement tools to ensure that the upload/download bandwidth meets the requirement of at least 1.5 Mbps for high-definition video calls.

Prioritize using wired networks: Wired Ethernet connections are much more stable than Wi Fi and can significantly reduce latency and packet loss.

Update and Close: Keep the Teams client at the latest version. During the meeting, turn off unnecessary backend applications (such as cloud disk synchronization and large-scale downloads) to free up bandwidth and system resources.

Using built-in tools: The Teams client has built-in detection tools under "Settings">"Network", which can run tests to evaluate connection quality.

Optimizing DNS is just one piece of the puzzle to enhance the Teams experience, but it is usually the least expensive and fastest yielding step. When the "navigation system" of data becomes efficient and accurate, your voice and image can find the shortest and smoothest path, achieving near real-time communication across geographical distances.

In today's normalized global collaboration, smooth and stable video conferencing is not only a tool, but also a reflection of efficiency and professionalism. Starting from changing one line of DNS configuration may be the key turning point for you to bid farewell to lagging and embrace seamless communication.

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: