Hi Brian, On 02/11/2013 07:44 PM, Brian Haberman wrote: > Hi Suresh, > > On 2/11/13 7:08 PM, Suresh Krishnan wrote: >> Hi Brian, >> Thanks for the review. I wanted to clarify three points that you >> raised and I will ask the authors take care of the rest. >> >> On 02/11/2013 04:11 PM, Brian Haberman wrote: >>> 7. In Section 4.1.2, it would be good to describe any issues that the >>> approach has with the original use of the Identification field for >>> fragmentation reassembly. If a middlebox changes the ID field, weird >>> things can/will happen if those packets are fragmented somewhere. >> >> Agree. I think this is precisely the reason that the mechanism for >> putting the HOST_ID in the IP-ID is a non-starter. > > I agree. But that rationale should be in the draft.
Ack. Med proposed a reference to RFC6864 Section 5.3. Is that sufficient? > >> >>> 11. Is Section 4.6 theoretical or is there a specific reference that can >>> be added for this technique? >> >> There are several mechanisms that use port sets for IPv4 address >> sharing. A+P (RFC6346) is one such mechanism. > > Then I would ask that a reference be put in to give readers an example. OK. > >> >>> 15. Section 5 >>> >>> * Shouldn't there be an additional metric that covers the impact/cost of >>> needing client or middlebox code changes? >>> >>> * Where did the 100% success ratio for IP-ID come from? There have been >>> documented cases of OSes setting the Identification field to zero. If >>> that is true, the success ratio can't be 100% can it? >> >> This technique involves the translator (and not the sender) setting the >> IP-ID field. That is why it can still work with OSes on senders setting >> the IP-ID to zero. > > You still have the issue of the middlebox setting that ID to something > that potentially impacts fragmentation reassembly. So, I would still > like to know how that 100% success ratio was collected. Makes sense. I read the test result % to mean successful connection establishment and identification. Med, can you elaborate a bit on what exactly was tested and what the success % means. Thanks Suresh _______________________________________________ Int-area mailing list [email protected] https://www.ietf.org/mailman/listinfo/int-area
