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I am trying to simulate an intermittent ping timeout by adding the -w switch but it seems to be ignoring that switch.

The host* I'm pinging typically replies around 108 ms so if I set /w to anything lower than that I would have thought I'd see timeouts, but no matter what I set it to, I get no timeouts.

C:\Windows\System32>ping www.google.com -w 5

Pinging www.google.com [216.58.198.228] with 32 bytes of data:
Reply from 216.58.198.228: bytes=32 time=10ms TTL=54
Reply from 216.58.198.228: bytes=32 time=10ms TTL=54
Reply from 216.58.198.228: bytes=32 time=10ms TTL=54
Reply from 216.58.198.228: bytes=32 time=10ms TTL=54

Ping statistics for 216.58.198.228:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 10ms, Maximum = 10ms, Average = 10ms

Am I doing something wrong, or misunderstanding the situation? Or does this switch simply not work?

*Replaced with www.google.com in the example, to avoid including the actual ip address and hostname that I'm using

  • 1
    I can confirm this bug. What is interesting, the timeout setting is obeyed if you ping a non-answering host (try 8.8.8.7). – masgo Dec 8 '16 at 12:53
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The following documentation states:

When specifying very small numbers for timeout, the Ping reply can be received even if timeout milliseconds have elapsed.

After some testing, this seems to explain your issue. I have tested pinging example.com, wich replies between 70-85ms for me. When setting timeout to 80ms, some pings fail, and some don't. So, somewhere below 80ms starts to be "very small".

  • Pinging a host with a consistent 200ms+ latency and setting timeout to 100ms does nothing, the flag is ignored and nothing is timed out. This appears to be a bug in Windows 10 as it doesn't follow specifications. – misantroop Nov 14 '18 at 11:54

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