Ping command-test network connectivity between hosts
One, the ping command
1 Overview
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The ping command is mainly used to test the network connectivity between hosts and can also be used. The ping command will use the ICMP transmission protocol to send a response message. If the remote host has no problems with the network function, it will respond to the message, thus knowing that the host is operating normally.
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However, it is worth noting that the ping command under Linux system is slightly different from the ping command under Windows system. Running the ping command under Windows generally sends 4 requests to terminate the command; but under Linux, it will not terminate automatically. At this time, we need to press CTR+C to terminate or use the -c parameter to specify the number of requests sent for the ping command.
2. Format
3. Common parameters
| Common parameters | Description |
|---|---|
| -d | Use the SO_DEBUG function of Socket |
| -I | Send data packets using the specified network interface |
| -l | Set the data packet to be sent out before sending the requested information |
| -n | Only output values |
| -p | Set the template style to fill the data packet |
| -q | Do not display the instruction execution process |
| -R | Record the routing process |
| -s | Set the size of the data packet |
| -t | Set the size of the survival value TTL |
| -v | Detailed display of the execution process of instructions |
| -c | Specify the number of times to send a message |
| -i | Specify the interval between sending and receiving messages |
| -W | Waiting timeout |
| -w | How many seconds to stop the ping command operation |
4. Examples
①, check connectivity
②, stop after only 5 consecutive pings
③, set ping 5 times, each time interval of 0.5 seconds
④, Ping different network segment addresses, and set timeout to automatically stop ping
