Test network connectivity between hosts (ipv4)
ping command is used to test the network connectivity between hosts. Executing the ping command will use the ICMP transport protocol to send a message requesting a response. If there is no problem with the network function of the remote host, it will respond to the message, thus knowing that the host is operating normally.
ping (options) (parameters)
-d: Use the SO_DEBUG function of Socket;
-c <Number of completions>: Set the number of times to complete the request response;
-f: limit detection;
-i<interval seconds>: Specify the interval between sending and receiving information;
-I<network interface>: Use the specified network interface to send data packets;
-l<preload>: Set the data packet to be sent before sending the required information;
-n: Output only numerical values;
-p<template style>: Set the template style for filling data packets;
-q: Do not display the instruction execution process, except related information at the beginning and end;
-r: Ignore the ordinary Routing Table and send the data packet directly to the remote host;
-R: record the routing process;
-s<packet size>: Set the size of the data packet;
-t<survival value>: Set the size of the survival value TTL;
-v: Display the execution process of the command in detail.
-w <timeout seconds>: No matter how many packets have been sent or received before, as long as this number of seconds is exceeded, the program will exit;
Destination host: Specify the destination host for sending ICMP messages.
[root@AY1307311912260196fcZ ~]# ping www.jsdig.com
PING host.1.jsdig.com (100.42.212.8) 56(84) bytes of data.
64 bytes from 100-42-212-8.static.webnx.com (100.42.212.8): icmp_seq=1 ttl=50 time=177 ms
64 bytes from 100-42-212-8.static.webnx.com (100.42.212.8): icmp_seq=2 ttl=50 time=178 ms
64 bytes from 100-42-212-8.static.webnx.com (100.42.212.8): icmp_seq=3 ttl=50 time=174 ms
64 bytes from 100-42-212-8.static.webnx.com (100.42.212.8): icmp_seq=4 ttl=50 time=177 ms
...Press Ctrl+C to end
--- host.1.jsdig.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 2998ms
rtt min/avg/max/mdev = 174.068/176.916/178.182/1.683 ms