Cisco Systems 15216 EDFA2 5.1.3 SNMP MIBs and Message Types

FINAL DRAFT - CISCO CONFIDENTIAL

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CiscoONS 15216 EDFA2 Operations Guide

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Chapter5 SNMP MIB Installation an d Configuration

SNMP Overview

Figure5-2 SNMP Agent and MIB

The SNMP MIBs (CERENT-15216-EDFA-MIB.mib and CERENT-GLOBAL-REGISTRY.mib) are files

written in ASN.1 syntax. The CERENT-15216-EDFA-MIB.mib specifies what ONS 15216 EDFA2

information needs to be controlled and monitored. This MIB is pre-installed on the SNMP age nt and is

accessible via the CLI.

The CERENT-15216-EDFA-MIB.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) uses the SNMP MIBs to

communicate with the SNMP agent.

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.

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 man ager is used,

it must be able to communicate with the SNMP agent pre-installed on the ONS15216 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.

5.1.3 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.

A 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).

get, get-next, get-bulk Network device

get-response, traps

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SNMP Manager

NMS

MIB

SNMP Agent