Cisco CRS-1 - Carrier Routing System Router Administration Manual page 420

Glossary
SNMP service
A Windows service that provides a framework for SNMP and provides the SNMP
agent that interfaces with SNMP subagents.
SNMP subagent
Cisco provides SNMP subagents to support each Cisco MIB. The SNMP service
loads the Cisco SNMP subagents and it exchanges SNMP messages with the
SNMP subagents. The SNMP service formats information as MIBs and sends this
information to a Network Management System (NMS). It also sends traps from
the SNMP subagents to the appropriate SNMP trap receivers.
Standby server
The server that takes over for the active server in what is called a failover when
(or if) the active server becomes unavailable. Cisco CRS lets you deploy up to two
standby servers for high availability. With high availability, if an active server
becomes unavailable, the standby server immediately and automatically becomes
the active server.
Step
A single element in the CRS Editor that accomplishes a specific function
Subfacility
A traceable software component.
Subscriber
The server in a CRS cluster that receives data from the Publisher server. The
Publisher/Subscriber database model enables CRS to provide high-availability
(all data to be available on the multiple nodes of the cluster) and failover support.
Subscription Agent
Actively replicates data between the Publisher and Subscriber. Since CRS uses
bi-directional replication, the subscription agent replicates data from the
Publisher to the Subscriber as well as from the Subscriber to the Publisher.
Cisco Customer Response Solutions Administration Guide, Release 4.1(1)
GL-16