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SIP high availability

SIP uses the high availability features included in the product to offer a comprehensive high availability solution.

The following topics describe how high availability is implemented for this product.


SIP high availability architectural considerations


SIP proxy configuration considerations


Core groups and Distribution and Consistency Services (DCS)

A core group is a set of processes that handles high availability activities. Each core group has a coordinator function that manages all the singleton services running in the core group. Typical SIP deployments require only a single core group. For extremely large-scale deployments, such as 50 or more cell members, multiple core groups may be required.

The core group coordinator does the following:

For more information on core groups, read about high availability domain core groups.


DCS failure detection

For details on the core group failure detection mechanisms and algorithms, see the information on core group discovery and failure detection protocols.

DCS failure detection includes:


Subtopics


Related:

  • Core groups (high availability domains)
  • Core group discovery and failure detection protocols
  • Browse all SIP topics
  • Replicating SIP sessions
  • Upgrading SIP applications