In theory if you set the record-route to a DNS name and not an Ip address, then endpoints should be able to failover within a dialog - but as Alex says - transactions may fail. In many cases there are retry timers to restart transactions that fail.
This means that if a call starts with an INVITE transaction on one server, it should in theory be able to find another server for the BYE. Whether this DNS srv based fail over is implemented in end-points is up to testing to prove. If not, then virtual IP failover is your best friend. /O > On 27 Feb 2024, at 13:33, Alex Balashov via sr-users > <sr-users@lists.kamailio.org> wrote: > > That would require transaction replication, which Kamailio doesn't have. > > Most messages can be processed statelessly, so this isn't a huge obstacle. > However, CANCELs won't work. > >> On 27 Feb 2024, at 06:49, Sergio Charrua via sr-users >> <sr-users@lists.kamailio.org> wrote: >> >> Hi all! >> >> I am having some difficulties/doubts on what would be the best approach to >> let multiple Kamailio servers share their SIP sessions between each other. >> The goal is to have HA on Kamailio cluster such that if a call is received >> and initiated on Kamailio #1, and during any moment of the call (before or >> while established) if the server #1 goes down or Kamailio stops working for >> any reason, the call can be processed by Kamailio server #n available in the >> cluster. >> I do not want to mess with Virtual IPs or DNS, that is not the point, but >> instead need to get a proper way to share SIP sessions between Kamailio >> servers such that any server could continue the call without issue. >> >> I have checked the Dialog and DMQ module, but I am not sure if that is the >> way to go.... >> >> Could any one share a solution for this? >> >> Greatly appreciated. >> >> Cheers, >> >> >> Sérgio Charrua >> www.voip.pt >> >> >> __________________________________________________________ >> Kamailio - Users Mailing List - Non Commercial Discussions >> To unsubscribe send an email to sr-users-le...@lists.kamailio.org >> Important: keep the mailing list in the recipients, do not reply only to the >> sender! >> Edit mailing list options or unsubscribe: > > -- > Alex Balashov > Principal Consultant > Evariste Systems LLC > Web: https://evaristesys.com > Tel: +1-706-510-6800 > > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions > To unsubscribe send an email to sr-users-le...@lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to the > sender! > Edit mailing list options or unsubscribe: __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-le...@lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:
