By setting MTU no less than 1280 does not mean the packet can’t be smaller than 1280. A packet smaller than MTU is supposed to be forwarded without any issue.
If any packet is larger than the specified MTU, the DUT should reply with an ICMPv6 too big so that the sender could do fragmentation properly. From your description I’m not sure what is to be expected. What are the request packets from the IXIA, and what is the actual reply from the DUT? Regards, Xiaodong > On Dec 14, 2022, at 6:42 PM, NUAA无痕 <nuaawan...@gmail.com> wrote: > > > Hi, vpp experts > Now i meet a problem that use IXIA software to test ipv6 support > > RFC2460 point out that all machine support ipv6 fragment must set MTU cannot > less than 1280, > but IXIA test ipv6 fragment will send two request frag packet that data size > is 768 and expect receive two reply packet, but our system(centos7) only > reply an ICMP error packet, because request packet size is less than 1280 > > Is vpp support ipv6 fragment size less than 1280? > In addition that has some configure in centos7 can support this? > > I m unfamiliar with ipv6, looking forward your help! > > Best regards > wanghe > > >
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#22334): https://lists.fd.io/g/vpp-dev/message/22334 Mute This Topic: https://lists.fd.io/mt/95681811/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/leave/1480452/21656/631435203/xyzzy [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
