> > Sorry for the late response and thank you two. Yes, both of you are right. > Firstly, I am concerning that several application nodes can use one virtual > IP to provide services, this seems can be done by OpenSAF interface > service, which says "IP Address Virtualization (VIP) provides a mechanism > to associate a virtual IP address with a particular application. The virtual > IP address moves along with the application across the nodes." > > What Chad talks about is my second consideration(sorry I don't put it > clearly, but it is important), it is about something like a load-balancer > between the remote applications and the cluster which runs several > application nodes, the remote applications can access the service provided > by the cluster via one IP, but the traffic is distributed among the > application nodes in the cluster. We don't want only one application node in > the cluster keeps busy and the other N-1 nodes are just standby. >
Right. So each SIP server instance needs its own distinct IP address and runs active/active/active on every payload. The LVS would be configured as a 2N redundancy with a single IP, representing the IP address that the clients talk to. Chad
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