What is a ping value and how the ping value is calculated

What is a ping value and how the ping value is calculated

PING (Packet Internet Grope), Internet Packet Explorer, a program for testing network connection volumes. Ping sends an ICMP

The Echo requests the message to the destination and reports whether the desired ICMP echo response is received.

It is a command to check whether the network is unobstructed or the speed of the network connection. As an administrator or hacker who lives on the web

, the ping command is the first DOS command that must be mastered, and it uses the same principle: using the IP address of the machine on the network

One, send a packet to the destination IP address, and then ask the other party to return a packet of the same size to determine whether two network machines are

Whether the connection is connected, the delay is how much.

Ping refers to end-to-end connectivity, which is often used as a check for usability, but some virus Trojans are forced to perform a large number of remote executions

The ping command grabs your network resources, causing the system to slow down and slow down. Ping intrusion is strictly forbidden as a basic part of most firewalls

Feature provides users with a choice. In general, if you do not use as a server or network testing, you can safely select it

, protect your computer

Let's take the American server as an example to tell you how to calculate the ping value. U.S. server ping is much faster. People are

Know that the ping value is calculated by sending a packet from the local computer, transferring it to the server, and then returning the server to the total time of the local computer

Is the ping value, then the U.S. server is far from mainland China, the Earth's equator circumference of 40,000 km, the United States and China on both sides of the Earth

, the physical distance is about 20,000 km, the electronic signal transmission speed is 300,000 km/s, according to this method, the ideal state, the United States

The fastest ping to mainland China is around 130MS, but because of over 10 routes, plus each routing node, and the power

Signal attenuation of the letter broadband, the U.S. server to mainland China's ping is the fastest more than 170MS. General Household telecom Broadband 2M words

, the fastest U.S. server ping in the continent is around 190MS, while the telecom servers with a bandwidth of 10M or more, especially the China Sea

Cable exports Shanghai Telecom's server ping value is at least about 170MS.

All in all, if you encounter a ping value less than 100MS U.S. server, said the server is in the United States, is certainly false, up to

is a U.S. NTT company such as multinational companies set up in Asia, Hong Kong, Taiwan and other place of the server.

On the download, the actual download speed = Bandwidth 8, this is the theoretical surface calculation value; So if the bandwidth is 10M, the next

Load speed is the fastest is 108=1.25mbs, otherwise think of their bandwidth is 10M, then download speed is 10M, so the blunder special

was wrong;
About Ping values:
The Internet transmission medium of a domestic service server is submarine optical cable, the newest submarine cable is the Chinese landing place is Qingdao, Chong

Ming Island, Hong Kong These three places, the United States is Los Angeles, Oregon State Cannes beach.
The U.S.-China distance is half the earth, light a second 300,000 kilometers, around the earth 7.5 laps, 1 seconds =1000 milliseconds, then around the earth half a lap speed is

100015=66 milliseconds, data return takes the same time.
Ping the United States a server, data requests in the past, and then back, the time required is what we often say ping value
The data is only from the bottom of the submarine cable to the head, it will need 133ms response and transmission time. Plus the two sides to the sea cable before the

Over the route processing time, the ping between the U.S. and China servers, the best expected value is 180ms; so if the US server ping value

At 200ms or above 200ms, these are normal speeds.
Below this icon is the approximate connection speed of the United States server to all parts:
China: 198ms Australia: 194ms Canada: 82ms UK: 149ms
Russia: 178ms India: 267ms Japan: 158ms South America: 213MS