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cholla

Find MTU & max latency with ping

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My max mtu is 1472, I never tested it that way before, thanks, cholla.

Results:

C:Documents and Settings>ping testmy.net -f -l 1473

Pinging testmy.net [67.18.179.85] with 1473 bytes of data:

Packet needs to be fragmented but DF set.

Packet needs to be fragmented but DF set.

Packet needs to be fragmented but DF set.

Packet needs to be fragmented but DF set.

Ping statistics for 67.18.179.85:

    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:Documents and Settings>ping testmy.net -f -l 1472

Pinging testmy.net [67.18.179.85] with 1472 bytes of data:

Reply from 67.18.179.85: bytes=1472 time=57ms TTL=50

Reply from 67.18.179.85: bytes=1472 time=56ms TTL=50

Reply from 67.18.179.85: bytes=1472 time=56ms TTL=49

Reply from 67.18.179.85: bytes=1472 time=55ms TTL=50

Ping statistics for 67.18.179.85:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 55ms, Maximum = 57ms, Average = 56ms

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1473 too big

C:Documents and SettingsBlunted>ping www.testmy.net -f -l 1472

Pinging www.testmy.net [67.18.179.85] with 1472 bytes of data:

Reply from 67.18.179.85: bytes=1472 time=63ms TTL=53

Reply from 67.18.179.85: bytes=1472 time=63ms TTL=53

Reply from 67.18.179.85: bytes=1472 time=64ms TTL=53

Reply from 67.18.179.85: bytes=1472 time=63ms TTL=53

Ping statistics for 67.18.179.85:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 63ms, Maximum = 64ms, Average = 63ms

C:Documents and SettingsBlunted>ping www.testmy.net

Pinging www.testmy.net [67.18.179.85] with 32 bytes of data:

Reply from 67.18.179.85: bytes=32 time=44ms TTL=53

Reply from 67.18.179.85: bytes=32 time=44ms TTL=53

Reply from 67.18.179.85: bytes=32 time=44ms TTL=53

Reply from 67.18.179.85: bytes=32 time=44ms TTL=53

Ping statistics for 67.18.179.85:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 44ms, Maximum = 44ms, Average = 44ms

C:Documents and SettingsBlunted>

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C:Documents and Settings>ping testmy.net -f -l 1473

Pinging testmy.net [67.18.179.85] with 1473 bytes of data:

Packet needs to be fragmented but DF set.

Packet needs to be fragmented but DF set.

Packet needs to be fragmented but DF set.

Packet needs to be fragmented but DF set.

Ping statistics for 67.18.179.85:

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When you ping with your MTU that is your maximum latency at that time it will change if you do it to a differrrrent site or a different time of day .Not by a great deal.I'm not sure what you should ping with to get the latency for the calculater at cablenut.Van Buren would probably know this too.

The test is mostly to give you your max MTU the latency(RTT) is a secondary result.This would be the latency of all the hops added together at least that's what I think is correct.

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