It seems to be Google specific in this case as when I ping cisco.com it
replies with the same size :)
Regards,
-- Piotr Matusiak CCIE #19860 (R&S, Security), CCSI #33705 Technical Instructor website: www.MicronicsTraining.com <http://www.micronicstraining.com/> blog: www.ccie1.com If you can't explain it simply, you don't understand it well enough - Albert Einstein 2011/11/1 Carlos G Mendioroz <tron_at_huapi.ba.ar> > Hmm, > The question was specific to 8.8.8.8, which is a specific host (or set of > hosts :) that actually DO NOT behave like RFC-792 asks. > > FTR, RFC-792 says: > > Data received in an ICMP Echo Request MUST be entirely included in the > resulting Echo Reply. However, if sending the Echo Reply requires > intentional fragmentation that is not implemented, the datagram MUST > be truncated to maximum transmission size (see Section 3.3.3) and > sent. > ... > > If a Record Route and/or Time Stamp option is received in an ICMP Echo > Request, this option (these options) SHOULD be updated to include the > current host and included in the IP header of the Echo Reply message, > without "truncation". Thus, the recorded route will be for the entire > round trip. > > but testing shows that 8.8.8.8 answers with small reply when data size > gets over 64 bytes. > > -Carlos > > Piotr Matusiak @ 01/11/2011 10:00 -0300 dixit: > >> Yes >> >> Regards, >> -- >> Piotr Matusiak >> CCIE #19860 (R&S, Security), CCSI #33705 >> Technical Instructor >> website: www.MicronicsTraining.com <http://www.micronicstraining.com/> < >> http://www.micronicstraining.**com/ <http://www.micronicstraining.com/>> >> >> blog: www.ccie1.com >> >> If you can't explain it simply, you don't understand it well enough - >> Albert Einstein >> >> >> 2011/11/1 amin <amin_at_axizo.com> >> >> Hi experts, >>> >>> >>> >>> If I do extended ping 8.8.8.8 size 2000, this is the size of the echo >>> request, what will be the size of the echo replay? It will be the same >>> size?? >>> >>> >>> >>> Regards, >>> >>> Amin >>> >>> >>> Blogs and organic groups at http://www.ccie.net >>> >>> ______________________________**______________________________** >>> ___________ >>> Subscription information may be found at: >>> http://www.groupstudy.com/**list/CCIELab.html<http://www.groupstudy.com/list/ CCIELab.html> >>> >> >> >> Blogs and organic groups at http://www.ccie.net >> >> ______________________________**______________________________** >> ___________ >> Subscription information may be found at: http://www.groupstudy.com/** >> list/CCIELab.html <http://www.groupstudy.com/list/CCIELab.html> >> >> >> >> >> >> >> >> > -- > Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina Blogs and organic groups at http://www.ccie.netReceived on Tue Nov 01 2011 - 15:20:53 ART
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