Indeed, such issues related to UDP fragmentation should not happen, the packets can be up to 64k, bigger than MTU size. I think linux had it for more than 20 years and most of routers are based on it.
But surprisingly, there are still some routers that cannot cope with that -- I get hit from time to time (not too often, I have to say it) with support requests related to this matter and I also wonder how that is still the case today. Cheers, Daniel On 01.04.19 17:18, Steve Davies wrote: > Never quite got this. UDP packets can be up to 64k, right? And > fragmentation is a standard IP feature if a packet is bigger than MTU > size. > > Steve > > > On Mon, 1 Apr 2019 at 16:43, Alex Balashov <[email protected] > <mailto:[email protected]>> wrote: > > The customary inter-Kamailio solution is jumbo frames (if you > control network end-to-end) or TCP. > > — > Sent from mobile, with due apologies for brevity and errors. > > On Apr 1, 2019, at 10:33 AM, Igor Olhovskiy > <[email protected] <mailto:[email protected]>> wrote: > >> Hi! >> >> Was looking on some way to compress SIP signalling between >> internal servers. But found out, there are no some pre-defined or >> recommended mechanism of doing this. >> Yes, I found gzcompress module, but it will help only in case of >> big body, but not whole message itself. Like in some cases you >> can have 4-5 RR headers, which is already a lot of info. >> >> What I googled is >> >> 1. >> SigComp >> 2. >> Compact Header form >> >> As I found, SigComp is really not widely-used method and it >> support along opensource SIP servers/PBXes is not documented. >> For Compact Header form - is there any way of using Kamailio to >> compress message this way? >> Maybe also there is a way of having some intermediate proxy-layer >> software, that will gzip/gunzip SIP signalling in realtime? >> >> All of this actually cause info in SIP/SDP grows rapidly, >> unfortunately MTU size is not. >> Sent from Mailspring >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> [email protected] <mailto:[email protected]> >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] <mailto:[email protected]> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users -- Daniel-Constantin Mierla -- www.asipto.com www.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - May 6-8, 2019 -- www.kamailioworld.com
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