SNMP
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System Management Guide
3HE 11018 AAAC TQZZA Edition: 01
4.1 SNMP Overview
4.1.1 SNMP Architecture
The Service Assurance Manager (SAM) consists of two elements: managers and
agents. The manager is the entity through which network management tasks are
facilitated. An agent is a software module integrated into the operating system of the
managed device that communicates with the network manager. Managed devices,
such as bridges, hubs, routers, and network servers can contain managed objects.
A managed object can be a configuration attribute, performance statistic, or control
action that is directly related to the operation of a device.
Managed devices collect and store management information and use Simple
Network Management Protocol (SNMP). SNMP is an application-layer protocol that
provides a message format to facilitate communication between SNMP managers
and agents. SNMP provides a standard framework to monitor and manage devices
in a network from a central location.
An SNMP manager controls and monitors the activities of network hosts that use
SNMP. An SNMP manager can obtain (get) a value from an SNMP agent or store
(set) a value in the agent. The manager uses definitions in the management
information base (MIB) to perform operations on the managed device such as
retrieving values from variables or blocks of data, replying to requests, and
processing traps.
Between the SNMP agent and the SNMP manager, the following actions can occur.
• The manager can get information from the agent.
• The manager can set the value of a MIB object that is controlled by an agent.
• The agent can send traps to notify the manager of significant events that occur
on the managed device (for example, the 7705 SAR router).
SNMP is supported on network hosts using the IPv4 and IPv6 protocols.
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