PING www.jianfei30.com (172.80.49.82) 56(84) bytes of data.
64 bytes from 172.80.49.82 (172.80.49.82): icmp_seq=1 ttl=121 time=146 ms
64 bytes from 172.80.49.82 (172.80.49.82): icmp_seq=2 ttl=121 time=143 ms
64 bytes from 172.80.49.82 (172.80.49.82): icmp_seq=3 ttl=121 time=143 ms

--- www.jianfei30.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 143.181/144.293/146.414/1.531 ms