Control Center Terminology - Cisco CRS-1 - Carrier Routing System Router Administration Manual

Control Center Terminology

Control Center Terminology
Cisco Customer Response Solutions Administration Guide, Release 4.1(1)
8-2
This section provides information about control center terminology.
• Cluster. A Cisco CRS cluster (often referred to as cluster in this manual)
consists of one or more servers (nodes) that are running Cisco CRS
components in your Cisco CRS deployment. If you deploy Cisco CRS
components on a single server, the Cisco CRS cluster consists of that server.
If you deploy Cisco CRS on multiple servers, the cluster includes the Cisco
CRS server and any expansion (additional) servers and standby servers on
which you installed Cisco CRS. The CRS cluster supports up to two CRS
servers, one designated as the active CRS server and the other designated as
the standby CRS server for high availability purposes.
• Cluster profile. The LDAP server stores information about the cluster in a
cluster profile. A cluster profile is an LDAP Organizational Unit that contains
a set of LDAP entries, which include data relating to the Cisco CRS servers,
components, and licenses installed in a cluster. A cluster profile allows the
use of the same LDAP entries for multiple servers.
Node (server). A computer that belongs to a cluster.
•
• Expansion Server. You can increase the capacity of your Cisco CRS
deployment by activating the Database, Monitoring, and Recording
components on various additional servers in the Cisco CRS cluster. Such an
additional server is called an expansion server.
• Active Server. The active server provides all system services and resources.
You can deploy one active server in each Cisco CRS subsystem. If the active
server fails, the Cisco CRS subsystem automatically fails over to the standby
server. Refer to the
page 8-6 for more information.
Standby Server. You can deploy up to two servers in each Cisco CRS system
•
for high availability—one master server and one standby server. With high
availability, if an active server becomes unavailable, the standby server
immediately and automatically becomes the active server. Refer to the
Availability and Automatic Failover" section on page 8-6
information.
• Component. The software units in the Cisco CRS system. When you install
Cisco CRS system, you must specify the components that run on a particular
server. The main software components of the Cisco CRS server are the
Engine, datastores, monitoring, recording, and the node manager. When you
Chapter 8
"High Availability and Automatic Failover" section on
Managing the Cisco CRS System
"High
for more