ping

Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.

C:\Documents and Settings\Administrator>ping 172.16.2.251

Pinging 172.16.2.251 with 32 bytes of data:

Control-C
^C
C:\Documents and Settings\Administrator>ping 172.16.2.253

Pinging 172.16.2.253 with 32 bytes of data:

Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 172.16.2.253:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Documents and Settings\Administrator>
C:\Documents and Settings\Administrator>