On May 22, 2010, at 10:18 PM, <L.Wood@xxxxxxxxxxxx> <L.Wood@xxxxxxxxxxxx> wrote: > Randall, > > If you're referring to RBSCP, which is a weak TCP/SCTP PEP that > uses SCTP between tunnel endpoints, then yes, that is available > in SCTP-capable Cisco routers. But it's not in widespread use. > > having a large number of IANA PPIDs for SCTP is simply > an indication that SCTP is overspecified. (Does anyone I do not understand why having PPIDs means overspecified. When writing a dissector for SCTP it is very handy to have an indication which upper layer protocol is encapsulated in a DATA chunk. If an upper layer doesn't want to do it, he can always use 0. > even use partial reliability?) Yes. And it will hit the IETF eventually... Best regards Michael > > > On 22 May 2010, at 13:43, Randy Stewart wrote: > >> There are several projects I have worked on that >> DO use SCTP internally. Do they run on the big I.. in a way, >> they are in routers. >> >> Are they behind NAT's no.. since most NAT's with two exceptions do >> not support SCTP. >> >> There are other protocols that I am aware of in Datacenters as well that >> have picked SCTP. >> >> If you look at the IANA registry for Protocol ID's in SCTP I think there >> are 28 PPID's assigned... now thats not a huge number but its also >> not representative since many folks just pick their own PPID and use >> it.. not >> paying attention to the registry. >> >> >> R >> On Apr 27, 2010, at 12:27 AM, <L.Wood@xxxxxxxxxxxx> >> <L.Wood@xxxxxxxxxxxx> wrote: >> >>> I don't think that counts as a we-chose-to-use-SCTP end user... >>> >>> SIGTRAN infrastructure in the telephony providers doesn't go through >>> NAT. ergo, SCTP's most popular use doesn't need to go through NAT. >>> And DCCP doesn't need to go through NAT, because no-one uses DCCP... >>> so there's no need to tunnel these over UDP to get through NAT. >>> >>> actual applications running on an actual end-user computer with a >>> TCP/IP stack, please. >>> >>> On 26 Apr 2010, at 23:49, Brian F. G. Bidulock wrote: >>> >>>> L.Wood, >>>> >>>> Hmmm. SIGTRAN requires SCTP. SIGTRAN is widely >>>> deployed and running your phone calls. >>>> >>>> --brian >>>> >>>> L.Wood@xxxxxxxxxxxx wrote: (Mon, 26 Apr 2010 21:34:14) >>>> >>>> --x-- snip --x-- >>>>> On a related note, I spent years dealing with proponents of >>>>> SCTP, and yet never encountered any actual >>>>> we-chose-to-use-SCTP end users. So, are there any actual DCCP >>>>> users out there? >>>> >>>> -- >>>> Brian F. G. Bidulock >>>> bidulock@xxxxxxxxxxx >>>> http://www.openss7.org/ >>> >>> Lloyd Wood >>> L.Wood@xxxxxxxxxxxx >>> http://sat-net.com/L.Wood >>> >>> >>> >> >> ----- >> Randall Stewart >> randall@xxxxxxxxxxxx >> >> >> >> > > Lloyd Wood > L.Wood@xxxxxxxxxxxx > http://sat-net.com/L.Wood > > > >
