PING jnfmgs.jdol.com.cn (39.97.208.120) 56(84) bytes of data.
64 bytes from 39.97.208.120 (39.97.208.120): icmp_seq=1 ttl=49 time=286 ms
64 bytes from 39.97.208.120 (39.97.208.120): icmp_seq=2 ttl=49 time=285 ms
64 bytes from 39.97.208.120 (39.97.208.120): icmp_seq=3 ttl=49 time=287 ms

--- jnfmgs.jdol.com.cn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 285.834/286.508/287.198/0.556 ms