SNMP Basics
Network Management Systems use the Simple Network Management Protocol (SNMP), an industry-standard protocol, to exchange management information between network devices. SNMP enables administrators to remotely monitor network/application performance, find and solve network problems, and plan for network growth.
An SNMP-managed network contains managed devices, agents, and Network Management Stations (NMS). Management Information Bases (MIBs) are used to structure the information that passes between the components in the system.
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A managed device designates a network node that contains an SNMP agent and resides on a managed network. Managed devices collect and store management information and make it available by using SNMP.
The following Unified ICM/CCE components are valid managed devices: -
Routers
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Loggers
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Peripheral Gateways (PGs)
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Administration & Data Server
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CTI Gateways (CGs)
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CTI OS Servers
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Outbound Option
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An agent resides on a managed device. An agent (or one of its subagents) retrieves local management information and translates it into the SNMP format to forward it to an SNMP Management Station. Subagents collect information for various components and then forwards that information to a master agent.
Unified ICM/CCE supports the following agents: -
SNMP Master Agent
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Unified ICM/CCE Application (CISCO-CONTACT-CENTER-APPS-MIB) Subagent
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Platform Subagent(s)1
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System Applications Instrumentation (SYSAPPL-MIB) Subagent
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Host Resources (HOST-RESOURCES-MIB) Subagent
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A Network Management Station (NMS) comprises an SNMP management application together with the computer on which it runs. An NMS executes applications that monitor and control managed devices. An NMS provides the bulk of the processing and memory resources that are required for network management. Cisco Unified ICM/CCE SNMP works with SNMP standards-compliant NMSs.
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A Management Information Base (MIB) designates a collection of information that is organized hierarchically. You can access instrumentation defined by a MIB using the SNMP protocol. MIBs are composed of managed objects, which are identified by object identifiers.
A managed object (sometimes called a MIB object or an object) possesses one of any number of specific characteristics of a managed device. Managed objects comprise one or more object instances, which are essentially variables.
Cisco Unified ICM/CCE supports the following MIBs: -
CISCO-CONTACT-CENTER-APPS-MIB
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HOST-RESOURCES-MIB
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SYSAPPL-MIB - (System-Level Managed Objects for Applications)
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