Date: Mon, 21 Jun 2004 08:28:19 -0400 From: Bill Moran <wmoran@potentialtech.com> To: adrian kok <adriankok2000@yahoo.com.hk> Cc: questions@FreeBSD.org Subject: Re: ping command question Message-ID: <20040621082819.62923c72.wmoran@potentialtech.com> In-Reply-To: <20040621005632.5241.qmail@web21204.mail.yahoo.com> References: <20040621005632.5241.qmail@web21204.mail.yahoo.com>
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adrian kok <adriankok2000@yahoo.com.hk> wrote: > Hi all > > Do you know why the command "ping" in unix and window > is different? Yes. > I start from one ISP to ping other ISP > > 1/ If the following result from window, it is good or > not? > lost = 7 within 3 thousand packets No, that's not good. There's no reason to be losing any packets, unless there's a network problems. However, depending on who those two ISPs are and how far away from each other, that may be acceptable. > 2/ how do I kow the average ms is good or not? Is it fast enough? > 3/ Which one (unix or window) is best for testing? The Unix one. Last I checked, the windows one rounded off the RTTs, thus making it inaccurate for testing. > Thank you very much for your advice > > Reply from 66.49.4.148: bytes=32 time=99ms TTL=57 > Reply from 66.49.4.148: bytes=32 time=109ms TTL=57 > Reply from 66.49.4.148: bytes=32 time=100ms TTL=57 > Reply from 66.49.4.148: bytes=32 time=95ms TTL=57 > > Ping statistics for 66.49.4.148: > Packets: Sent = 3534, Received = 3527, Lost = 7 > (0% loss), > Approximate round trip times in milli-seconds: > Minimum = 89ms, Maximum = 640ms, Average = 102ms > Control-C It seems like you've got a LOT of variation. Either your sharing that net connection with a lot of other services, or you've got problems. -- Bill Moran Potential Technologies http://www.potentialtech.com
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