I'm planning to install a Unified Communications Manager Subscriber 6.1(1b). The Publisher is already installed. I would need some basic information. The subscriber IP address should be different from the publisher IP address, right? This cluster includes only this two plataforms. What functions should the subscriber have? Can it be load balancing or just work as a passive backup? Is there a good link where I can read about the best practices?
4. Directory Services
4.1 Cisco DirSync: This service is used for LDAP integration. You need this service if you are going to integrate your CCM to an external LDAP server such as AD. You can enable on Oublisher and subscriber to provide resiliency.
Hope this helps.
NB: In CUCM 6.x, database resiliency enhancements were introduced to allow some CUCM applications to read and write to the local database. Thus there is no single point of failure at the publisher for these User Facing Features, one of which is Extension Mobility. Database changes made on one server are replicated to other servers within the cluster. So in CUCM 6.x, the Extension Mobility service can run on any of the CUCM servers and the Extension Mobility configuration is replicated to all servers. If the publisher is down, Extension Mobility information is still available for read and write in the subscribers.