Dino - see below: > -----Original Message----- > From: Dino Farinacci [mailto:farina...@gmail.com] > Sent: Thursday, December 09, 2021 9:33 AM > To: Templin (US), Fred L <fred.l.temp...@boeing.com> > Cc: Pascal Thubert (pthubert) <pthub...@cisco.com>; int-area@ietf.org > Subject: Re: [Int-area] Side meeting follow-up: What exact features do we > want from the Internet? > > > Dino, 'iperf3' proves that applications can sometimes get better > > performance by using > > packet sizes larger than the path MTU even though IP fragmentation is > > invoked. > > In loss-less networks.
Not entirely lossless - that is why the adaptation layer has its own fragment retransmission facility. And if loss becomes excessive, applications are simply asked to reduce the size of the packets they are sending. > And what about firewalls, that forward packets they should be filtering > because fragment 0 transport info is not > available? That would be a spurious fragment. Spurious fragments are filtered through inspection of the adaptation layer identification field regardless of whether transport info is available. > > Also, "adaptation layer" is not a new term; it is a very old term > > introduced by AAL5 > > and possibly earlier than that. > > That wouldn't be a marketing strategy I would use, LOL. Not a laughing matter - some old networking concepts such as AAL5 and Catenet were simply ahead of their time and that time has now come. Fred > Dino _______________________________________________ Int-area mailing list Int-area@ietf.org https://www.ietf.org/mailman/listinfo/int-area
