pingのデータサイズによってRequest timed outが起こる
質問です。下記のようにpingを実行したところ2000バイト程度だと問題なくpingが通りますが、
たった2バイトなのに、サイズをあげるとRequest timed out.がおこり、1回も通りません。理由を教えて下さい。
C:\>ping -l 2000 yahoo.co.jp
Pinging yahoo.co.jp [203.216.227.176] with 2000 bytes of data:
Reply from 203.216.227.176: bytes=2000 time=260ms TTL=51
Reply from 203.216.227.176: bytes=2000 time=157ms TTL=51
Reply from 203.216.227.176: bytes=2000 time=154ms TTL=51
Reply from 203.216.227.176: bytes=2000 time=114ms TTL=51
Ping statistics for 203.216.227.176:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 114ms, Maximum = 260ms, Average = 171ms
C:\>ping -l 2001 -w 60000 yahoo.co.jp
Pinging yahoo.co.jp [203.216.227.176] with 2001 bytes of data:
Reply from 203.216.227.176: bytes=2001 time=196ms TTL=51
Request timed out.
Reply from 203.216.227.176: bytes=2001 time=170ms TTL=51
Reply from 203.216.227.176: bytes=2001 time=183ms TTL=51
Ping statistics for 203.216.227.176:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 170ms, Maximum = 196ms, Average = 183ms
C:\>ping -l 2002 -w 60000 yahoo.co.jp
Pinging yahoo.co.jp [124.83.139.192] with 2002 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 124.83.139.192:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
お礼
確かにファイアウォールが原因でした! 教えていただき、どうもありがとうございました。