Specifications

5-3
Cisco ONS 15216 EDFA2 Operations Guide
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Chapter 5 SNMP MIB Installation and Configuration
SNMP Overview
SNMP MIB
The SNMP MIB (CERENT-15216-EDFA-MIB.mib) is a file written in ASN.1 syntax. This MIB
specifies what ONS 15216 EDFA2 information needs to be monitored. This MIB is pre-installed on the
SNMP agent and is accessible via the CLI.
The cerent15216Edfa.mib and other MIBs can also be installed on a third-party SNMP manager located
at a network management center. The SNMP manager at the network management center or the SNMP
manager, accessible via the CLI, (see SNMP Manager, page 5-3) uses the SNMP MIBs to communicate
with the SNMP agent.
SNMP Manager
The ONS 15216 EDFA2 comes with a pre-installed SNMP manager accessible via the CLI. This SNMP
manager can be accessed and used to communicate with the SNMP agent that is also pre-installed on
each ONS 15216 EDFA2. This manual displays examples of issuing SNMP commands to the amplifier
using the built-in SNMP manager.
Third-party, Vendor-Specific SNMP Managers
SNMP managers from third-party vendors running on a separate computer located at a network
management center are often used to manage network elements. If a third-party SNMP manager is used,
it must be able to communicate with the SNMP agent pre-installed on the ONS 15216 EDFA2.
If a third-party SNMP manager is used, it is assumed that the SNMP manager is pre-installed prior to
the SNMP MIB installation. Each vendor-specific SNMP manager has an unique set of instructions for
SNMP MIB installation. For directions on loading the SNMP MIBs, refer to SNMP manager
documentation.
Cisco does not provide or recommend a standard third-party SNMP manager.
SNMP MIBs and Message Types
SNMP operations can be quite powerful. A manager can retrieve or modify the value of management
information accessible by an agent, an agent can report an event to a manager, and the manager can
inform another manager of the value of management information on an agent. Using retrieval and
modification operations, a manager can cause an agent to perform an action or execute a command. The
manager can also create new and delete existing instances of management information.
An MIB is a hierarchically-organized collection of information. Network-management protocols, such
as SNMP, gain access to these MIBs. MIBs consist of managed objects and are identified by object
identifiers (OID).
The ONS 15216 EDFA2 SNMP agent communicates with an SNMP management application (a
third-party application or the built-in SNMP manager) using SNMP messages.
Table 5-1 describes SNMP operation types.