Tom, We are currently looking at testing with DNS. Do you have any plans to test other applications?
Best Regards, Jeffrey Dunn Info Systems Eng., Lead MITRE Corporation. (301) 448-6965 (mobile) -----Original Message----- From: Thomas Peterson [mailto:thom...@iol.unh.edu] Sent: Friday, January 23, 2009 11:51 AM To: Dunn, Jeffrey H. Cc: Rémi Denis-Courmont; ipv6@ietf.org; Huang, Frank; Sherman, Kurt T.; Liou, Chern; steve_eiser...@uscourts.gov; ipv6-boun...@ietf.org; v6...@ops.ietf.org; Grayeli, Parisa Subject: Re: End System PMTUD behavior question Hi Jeffrey, Here is a link to the list of all of the different hosts that we have performed this testing on: http://www.iol.unh.edu/services/testing/ipv6/equipment.php Currently we use the ping application to test PTMUD, however, we would be interested in performing addition tests using various applications. Thanks, Tom On Jan 23, 2009, at 9:54 AM, Dunn, Jeffrey H. wrote: > Tom, > > Many thanks for the information. Could you tell me the OS variants > on the hosts and router? Also, do you have any tests involving > applications? I will send you an off-line e-mail to discuss > possible additional testing. > > Best Regards, > > Jeffrey Dunn > Info Systems Eng., Lead > MITRE Corporation. > (301) 448-6965 (mobile) > > > -----Original Message----- > From: Thomas Peterson [mailto:thom...@iol.unh.edu] > Sent: Thursday, January 22, 2009 3:38 PM > To: Dunn, Jeffrey H. > Cc: Rémi Denis-Courmont; ipv6@ietf.org; Huang, Frank; Sherman, Kurt > T.; Liou, Chern; steve_eiser...@uscourts.gov; ipv6-boun...@ietf.org; > v6...@ops.ietf.org > ; Grayeli, Parisa > Subject: Re: End System PMTUD behavior question > > Hi Jeffrey, > > I have attached a picture which shows one of the topologies we use for > our PMTUD tests. > > In this test case we transmit an Echo Request from REF-Host2 to TAR- > Host1 with a packet size of 1500 bytes. REF-Host2 fragments the Echo > Request it transmits. TAR-Host1 replies to this Echo Request with an > Echo Reply to REF-Host2 with a size of 1500 bytes that is not > fragmented. TAR-Router1 sends a Packet Too Big message in response as > this Echo Reply is too large to forward onto Network 2. > > In all of the cases we have seen TAR-Host1 does fragment future Echo > Replies to REF-Host2, however, it does not retransmit any Echo Replies > for Echo Requests received prior to receiving the Packet Too Big > message from TAR-Router1. > > Additionally from the tests we have performed in our lab if TAR-Host1 > were to send an Echo Request with a packet size of 1500 bytes TAR- > Router1 would send a Packet Too Big message in response. In all cases > we have seen TAR-Host1 would not re-transmit this Echo Request and > this would be counted as packet loss in the ping command results. > > If this does not ideally match your test scenario we'd be happy to > work together off-line to replicate your scenario. > > Thanks, > Tom > -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
