Date: Tue, 26 May 2009 10:14:32 +0530 From: Arul Murugan <umarul@gmail.com> Subject: [users:01207] Re: Reg IPv6 Phase 2 : PMTU Interoperability Testing using NetBSD To: users@tahi.org Message-Id: <335b9b110905252144v18517a5et396070db8ef3c26d@mail.gmail.com> In-Reply-To: <4A1B4707.90304@redhat.com> References: <3f9723c40905242342o37e0efa0g94aa10ea360ad383@mail.gmail.com> <4A1B4707.90304@redhat.com> X-Mail-Count: 01207Hi Srinidhi, I think, when Ref1 host pings it knows its MTU, ping with size of 1500 will be fragmented from REF1 host itself, so there will not be any "too big message" at network2. But as the target host MTU is 1500, it will try to respond reply 1500 MTU size, that time Tar router will send a Too big message to Network1. Are you not seeing "too big messaage at Network1"? What is the Tar router you are using? If you share your network1 and network2 dump, i may dig bit more on this. Regards, Arul On Tue, May 26, 2009 at 7:03 AM, wang_jiabo <jiabwang@redhat.com> wrote: > Srinidhi Gopal wrote: > >> Hi, >> >> Has anyone used NetBSD machine for IPv6 Phase 2 Interoperability Testing? >> >> We are using NetBSD 4.0.1 as the other Target node for testing our >> product. >> >> The following 2 test cases under PMTU category are failing. >> >> *Failures:* >> >> IP6Interop 1.6a >> IP6Interop 1.6b >> >> *Test Setup:* >> >> TH1 / TR2 | >> -------------------------- (Network1) MTU 1500 >> | >> TR1 >> | >> --------------------------- (Network2) MTU 1280 >> | >> Ref-Host1 >> *Observations:* >> >> * The max PMTU size in NetBSD is 1280. >> >> * When we transmit echo requests from Ref-Host1 to TH1/TR2 with data size >> 1500, No "Packet Too Big" Messages are sent by our Router (TR1) since the >> packets (size greater than 1280) are by default fragmented irrespective of >> the MTU size configured on the interface. >> >> * Because of this behaviour of NetBSD stack, We are unable to complete the >> interop testing of our product. >> >> Kindly help us in resolving this issue. >> >> -- >> Regards, >> Srinidhi >> > I used NetBSD is no problem, I think REF-Host1 can any OS such as windows > 2008, redhat linux. > only TAR-Host2 should only use NetBSD and FreeBSD. > >1207_2.html (attatchment)(tag is disabled)