After purchasing Tencent ECs, how to solve packet loss in Internet access?

background

We are buying Tencent cloud servers Cloud server CVM_ Virtual machine _ Cloud computing server _ Elastic cloud server - Tencent cloud (tencent.com) When , For network , First, consider bandwidth , The second is to consider the location of the server and the location where most users access the ECS ; So when our users or themselves are accessing the ECS , Conduct ping Found a packet loss , Then you can start from the top 2 Go ahead and check , Start with the easiest 、 Factors that can be quickly avoided and solved shall be eliminated .

Internet bandwidth problem

CVM Check the method

1、 If you buy Tencent cloud CVM Words , You can use the instance self-test function , One click test instance performance 、 cost 、 The Internet 、 Disk and other status conditions , You can click on the document below , Just follow the instructions ：

Cloud server Use instance self-service detection - Operation guide - Document center - Tencent cloud (tencent.com)

However, this method has a drawback that there is a limit on the detection interval

2、 Or on your own CVM Monitor the page to see the bandwidth utilization , Just follow the instructions below , There are many ways to obtain monitoring data , Choose what suits you ：

Cloud server Get instance monitoring data - Operation guide - Document center - Tencent cloud (tencent.com)

CVM It is found that the bandwidth utilization rate of the external network is high or the bandwidth exceeds the limit , Upgrade the bandwidth on the console , Adjust according to the link below ：

Cloud server Adjust the network configuration - Operation guide - Document center - Tencent cloud (tencent.com)

Lightweight application server viewing methods

Follow the instructions in the document below , Just operate

Lightweight application servers View instance information - Operation guide - Document center - Tencent cloud (tencent.com)

Or take a look at the screenshot below to demonstrate the operation ：

Lightweight application servers are purchased in China , Bandwidth is exclusive , But there is no separate operation to upgrade the bandwidth , Upgrade the instance configuration .

And those purchased abroad , Bandwidth is shared , Peak bandwidth 30Mbps, There is no separate operation to upgrade bandwidth , And the peak value of the upgraded instance configuration is also 30Mbps, If the bandwidth utilization is greater than 30Mbps, It is recommended to purchase cloud CVM, It is not recommended to purchase lightweight application servers .

Geographical location problem

Domestic users access domestic ECS scenarios

If the server is in China , Users are also in China , And the bandwidth does not exceed the limit , The machine performance is normal , But there is packet loss , You need to use MTR The tool collects test information about abnormal packet loss , First of all, install the tools , The tool download is as follows ：

windows download ：https://mtr-1251908826.cos.ap-beijing.myqcloud.com/WinMTR.7z

There are... In the compressed package 32 Bit and 64 Bit , Choose to install according to your own system version .

Linux install ：

yum -y install mtr         

Link test steps

Usually , The link test process is shown in the following figure .

Link test steps

After collecting relevant test information , You can simply analyze the network delay and packet loss according to the following links

Cloud server Use MTR Analyze network delay and packet loss - Fault handling - Document center - Tencent cloud (tencent.com)

If client to server ,MTR There is no packet loss in the first three hops of the test information , But to the ECS IP There is packet loss in the last hop of , At this time, you can provide the collected positive and negative test screenshots and text test information （ Here we have all the information , It is also convenient for people to deal with it quickly ）, Submit the work order for processing .

A domestic user accesses an overseas cloud server scenario or an overseas user accesses a domestic cloud server scenario

According to the international network link quality problem , go 202.97 and 59.43 Network segment , Are long-term congestion network segments , At present, there is no optimization scheme on the operator side

If you claim that the time delay for visiting overseas is large 、 Packet loss problem , The involved route tracing has the following general categories ：

1、 Overseas address is not purchased VIP service , After becoming the backbone of the telecommunications industry, the whole process goes 202.97 Section to overseas , Such products must be exported through Telecom International , This exit is congested throughout the year ;

2、 Bought... At an overseas address VIP service , After the backbone of telecommunications , It will go through many times 59.43 Segment routing , Usually in Hong Kong and Singapore GIA All links are congested for a long time ;

summary ： go 202.97 and 59.43 Network segment , Are long-term congestion network segments

It is recommended to follow the guidelines in the link below , Make a springboard machine for transfer .

Cloud server International link delay - Fault handling - Document center - Tencent cloud (tencent.com)