Thursday 26 April 2007

changed MTU with DrTCP.exe --> MTU=1464

Used DrTcp.EXE to change MTU settings in winxp to 1464.

Why this value?

Because of this:

-- 1464 seems to be the biggest value I can set for the ping without
getting the "Packet neesd to be defragmented but DF set" message from
ping.

-- how this relates to the MTU I have set in my modem. I don't know.
Currently set to 1492 but changed it to MTU=1500 because it is now
back to using PPPoA


C:\>ping -f -l 1472 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1472 bytes of data:

Reply from 192.168.1.254: 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 209.123.109.175:
Packets: Sent = 4, Received = 1, Lost = 3 (75% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\>ping -f -l 1500 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1500 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 209.123.109.175:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),


C:\>ping -f -l 1500 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1500 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 209.123.109.175:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\>ping -f -l 1472 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1472 bytes of data:

Reply from 192.168.1.254: 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 209.123.109.175:
Packets: Sent = 4, Received = 1, Lost = 3 (75% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\>ping -f -l 1200 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1200 bytes of data:

Reply from 209.123.109.175: bytes=1200 time=261ms TTL=51
Reply from 209.123.109.175: bytes=1200 time=264ms TTL=51
Reply from 209.123.109.175: bytes=1200 time=279ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 3, Received = 3, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 261ms, Maximum = 279ms, Average = 268ms

C:>ping -f -l 1300 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1300 bytes of data:

Reply from 209.123.109.175: bytes=1300 time=262ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 262ms, Maximum = 262ms, Average = 262ms

C:\>ping -f -l 1400 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1400 bytes of data:

Reply from 209.123.109.175: bytes=1400 time=273ms TTL=51
Reply from 209.123.109.175: bytes=1400 time=269ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 269ms, Maximum = 273ms, Average = 271ms

C:\>ping -f -l 1450 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1450 bytes of data:

Reply from 209.123.109.175: bytes=1450 time=272ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 272ms, Maximum = 272ms, Average = 272ms

C:\>ping -f -l 1472 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1472 bytes of data:

Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 209.123.109.175:
Packets: Sent = 2, Received = 0, Lost = 2 (100% loss),

C:\>ping -f -l 1470 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1470 bytes of data:

Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 209.123.109.175:
Packets: Sent = 2, Received = 0, Lost = 2 (100% loss),

C:\>ping -f -l 1460 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1460 bytes of data:

Reply from 209.123.109.175: bytes=1460 time=263ms TTL=51
Reply from 209.123.109.175: bytes=1460 time=263ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 263ms, Maximum = 263ms, Average = 263ms

C:\>ping -f -l 1465 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1465 bytes of data:

Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 209.123.109.175:
Packets: Sent = 2, Received = 0, Lost = 2 (100% loss),

C:\>ping -f -l 1463 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1463 bytes of data:

Reply from 209.123.109.175: bytes=1463 time=264ms TTL=51
Reply from 209.123.109.175: bytes=1463 time=267ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 264ms, Maximum = 267ms, Average = 265ms

C:\>ping -f -l 1464 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1464 bytes of data:

Reply from 209.123.109.175: bytes=1464 time=262ms TTL=51
Reply from 209.123.109.175: bytes=1464 time=266ms TTL=51
Reply from 209.123.109.175: bytes=1464 time=264ms TTL=51
Reply from 209.123.109.175: bytes=1464 time=263ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 262ms, Maximum = 266ms, Average = 263ms

C:\>ping -f -l 1465 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1465 bytes of data:

Packet needs to be fragmented but DF set.
Packet needs to be fragmented but DF set.

Ping statistics for 209.123.109.175:
Packets: Sent = 2, Received = 0, Lost = 2 (100% loss),
Control-C

C:\>ping -f -l 1464 www.broadbandreports.com

Pinging broadbandreports.com [209.123.109.175] with 1464 bytes of data:

Reply from 209.123.109.175: bytes=1464 time=273ms TTL=51
Reply from 209.123.109.175: bytes=1464 time=262ms TTL=51
Reply from 209.123.109.175: bytes=1464 time=263ms TTL=51

Ping statistics for 209.123.109.175:
Packets: Sent = 3, Received = 3, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 262ms, Maximum = 273ms, Average = 266ms

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