What is the command to check network connectivity

The command to check network connectivity is ping. Ping is a service command that works at the application layer in the TCP/IP network architecture. It is used to determine whether the local host can successfully exchange data packets with another host, thereby determining whether the TCP/IP parameters are set correctly, whether the network is smooth, etc.

The command to check network connectivity is ping.

Related introduction:

Ping is a service command that works at the application layer in the TCP/IP network architecture. It mainly sends ICMP (Internet Control Message Protocol (Internet Message Control Protocol) Echo request message to test whether the destination station is reachable and understand its related status.

Ping is used to determine whether the local host can successfully exchange (send and receive) data packets with another host. Based on the returned information, you can infer whether the TCP/IP parameters are set correctly and whether the operation is normal. , whether the network is smooth, etc.

The Ping command can perform the following operations:

1. Verify the connection with a computer by sending ICMP (Internet Control Message Protocol) echo packets to the computer and listening for echo reply packets. Or connections to multiple remote computers;

2. Wait at most one second for each data packet sent;

3. Print the number of transmitted and received data packets;

It should be noted that successful Ping does not necessarily mean that the TCP/IP configuration is correct. It may be necessary to perform a large number of packet exchanges between the local host and the remote host to ensure the correctness of the TCP/IP configuration.

If the ping is successful but the network is still unavailable, the problem is likely to lie in the software configuration of the network system. A successful ping only ensures that there is a connected physical path between the current host and the destination host.

The above is the detailed content of What is the command to check network connectivity. For more information, please follow other related articles on the PHP Chinese website!