Re: [Kamailio-Users] Architecture with load-balancing (dispatcher module)

On Thu, Oct 23, 2008 at 1:47 PM, Daniel-Constantin Mierla &lt;miconda(a)gmail.com <mailto:miconda@gmail.com>> wrote: Hello, a solution I am using is to do shared IP (vrrp/ucarp). The typical scenario is active-backup, when one share IP is used. But you can do active-active by using two shared IP addresses, so will be server1: active_ip_1 - backup_ip_2 server2: backup_ip_1 - active_ip_2 So each server is active and backs-up the other. This can be scaled, with more than 2 servers, you need an IP per server, and you will have a chain of active servers backing up next one. Based on who is backing up who, you may have one or more servers down without affecting the service You have to take care of balancing the traffic among the IP addresses. OK but how do you share traffic among the IP addresses ? You need a kind of super load-balancer that load-balance traffic among load-balancers ?

-pascal Cheers, Daniel On 10/23/08 13:16, Alex Balashov wrote: Any "frontal application-level switch" would simply have the same liability. Kamailio is a very high-throughput proxy that can handle huge amounts of call setups per second. I think you can count on that. Failing over around the load balancer node to a secondary load balancer or distributing the traffic among multiple load balancers is a job best left to the sending endpoint. For example, a DID origination provider's switch or SBC can be set up to fail over calls to a different IP endpoint for your SIP trunk if no response is received within a certain amount of time. That is how this is typically done. At some point you've got to say that you've done all you can do, and it's up to the other side. Pascal Maugeri wrote: Hi I was wondering how to achieve an architecture with two or more active load-balancer nodes (kamailio+dispatcher module). I have read how to setup two dispatcher nodes, one node as a master and the other one as a backup. The backup node doesn't process any traffic until master fails. But how to make the traffic being processed by both load-balancers ? In the case for instance the capacity of single node is not enough to process all incoming traffic. Is there any recommended configuration (eg. using frontal application-level swith) Regards, Pascal ------------------------------------------------------------------------ _______________________________________________ Users mailing list Users(a)lists.kamailio.org <mailto:Users@lists.kamailio.org> http://lists.kamailio.org/cgi-bin/mailman/listinfo/users -- Daniel-Constantin Mierla http://www.asipto.com