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ping 機能
ICMP（Internet Control Message Protocol）を使用してIPパケットが正常に到達しているかを確認する。IPでの接続が正常かどうかを確認するために使われる。
形式 ping (option) [hostname / IPaddress]オプション
コマンド例
実行例
C:\>ping 192.168.0.1
Pinging 192.168.0.1 with 32 bytes of data:
Reply from 192.168.0.1: bytes=32 time<1ms TTL=30
Reply from 192.168.0.1: bytes=32 time<1ms TTL=30
Reply from 192.168.0.1: bytes=32 time<1ms TTL=30
Reply from 192.168.0.1: bytes=32 time<1ms TTL=30
Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\>
C:\>ping 192.168.0.1 -l 64000
Pinging 192.168.0.1 with 64000 bytes of data:
Reply from 192.168.0.1: bytes=64000 time=68ms TTL=30
Reply from 192.168.0.1: bytes=64000 time=68ms TTL=30
Reply from 192.168.0.1: bytes=64000 time=68ms TTL=30
Reply from 192.168.0.1: bytes=64000 time=68ms TTL=30
Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 68ms, Maximum = 68ms, Average = 68ms
C:\>
C:\>ping 192.168.0.10
Pinging 192.168.0.10 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 192.168.0.10:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
C:\>
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