Survivable core server terminology

Last Updated : Aug 06, 2013 |

The following list contains terms that are used in a survivable core server environment. Become familiar with these terms before you plan, configure, and administer Survivable core server.

  • Main server and survivable core server: The primary controller is referred to as the main server and the survivable server as a survivable core server.

  • Cluster: You will see the term cluster in the SAT screens that are used for Survivable core server. A cluster can be either a simplex server or a duplex pair of servers. If the cluster is a pair of duplex servers you will see both servers referred to as one cluster. In some cases you will see both terms of survivable core server and cluster used in this book.

  • Cluster Identifier (CLID): Each module receives a module identifier (MID) when a license file is created. The MID is referred to as the CLID in Survivable core server. A CLID uniquely identifies a single cluster so that each server in a duplex pair can have the same CLID.

  • System Identifier (SID): Communication Manager has a default system ID of 1. You can configure the System ID on the Server Role page. The system ID is common across the main server and all survivable servers. Avaya provides the system ID when you submit the Universal Install/SAL Product Registration Request form.

  • Server Identifier (SVID): Each server in a survivable core server environment is administered with a unique SVID. That means each server in a duplex pair has a different SVID. You can number the servers sequentially or leave gaps in the numbering.

  • Server Ordinal (SVOR): Each server in a survivable core server environment has a SVOR. The SVOR identifies the server within a cluster. The A-side server in a duplex pair always has ordinal one and the B-side server always has ordinal two. The SVOR is set automatically when the server is configured.

  • IP-alias address: When Processor Ethernet is used on duplicated servers, it must be assigned to an IP address that is shared between the servers. This address is known in the industry as an IP-alias. The active server is the only server that will respond on the IP-alias address.