> On 9 Dec 2016, at 22:30, Joe Touch <[email protected]> wrote: > > > > On 12/9/2016 1:26 PM, Michael Tuexen wrote: >> >> Not sure what the reassembly limit is... SCTP handled arbitrary sized >> user messages a the receiver side by using partial delivery. >> >> The SCTP_MAXSEG allows a user to limit the size of DATA chunks without >> reducing the pmtu. > Yes, but that size can actually be larger than the PMTU, not just smaller. Hmm. https://tools.ietf.org/html/rfc6458#section-8.1.16 states:
Note that the underlying SCTP implementation may fragment into smaller sized chunks when the PMTU of the underlying association is smaller than the value set by the user. So this means the user can not rely on this option to turn off SCTP fragmentation and let SCTP pass IP-packets down the stack to let the IP do the fragmentation. That is why I said, the user can use this option to ask the SCTP layer to use a smaller value than the one deduced from the PMTU. That is something you can do safely. Best regards Michael > >> Please note that this only affects DATA chunks, not >> the whole packet. > I was referring to the size the layer above SCTP deals with, not the > layer below. > > Joe > > _______________________________________________ > Taps mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/taps _______________________________________________ Taps mailing list [email protected] https://www.ietf.org/mailman/listinfo/taps
