Chapter 5 SNMP MIB Installation and Configuration

SNMP Overview

F I N A L D R A F T - C I S C O C O N F I D E N T I A L

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 5-1describes SNMP operation types.

Table 5-1 SNMP Operation Types

Operation

Description

 

 

get-request

Retrieves a value from a specific variable.

 

 

get-next-request

Retrieves the value following the named variable; this operation is often used

 

to retrieve variables in a table. With this operation, an SNMP agent does not

 

need to know the exact variable name. The SNMP manager searches

 

sequentially to find the needed variable in the MIB.

 

 

get-response

The reply to a get-request, get-next-request, get-bulk-request, or set-request

 

sent by an NMS.

 

 

get-bulk-request

Similar to a get-next-request, but this operation fills the get-response with up

 

to the max-repetition number of get-next interactions.

 

 

trap

An unsolicited message sent by an SNMP agent to an SNMP manager

 

indicating that an event has occurred.

 

 

set-request

Sets a value of a specific variable.

 

 

5.1.4 Command Syntax Using the SNMP Agent

Although Cisco has its own separate SNMP manager (Cisco Transport Manager [CTM]), management of the ONS 15216 EDFA2 is also possible using the built-in SNMP manager via the command line in the ASH shell, as described in SNMP Commands, page 6-15. The example commands and command syntax described in this manual are based on using the built-in ONS 15216 EDFA2 SNMP manager through the ASH shell CLI.

Commands can be issued via Telnet over a LAN or directly through the RS-232 (EIA/TIA-232) port on the module. (See .) After setting up a connection to the module and entering a password and user name, the following prompt appears:

ash:hostname:ONS15216 EDFA2>

To communicate with the module using SNMP, the command must begin with “snmp”.

Note To view a list of possible SNMP operations, enter “snmp” followed by a space and press the Tab key. (See Example 5-1.)

Example 5-1 snmp Command Followed by the Tab Key

ash:hostname:ONS15216 EDFA2> snmp

agent attribute host

mib pdu row

session subtree table

trap

Cisco ONS 15216 EDFA2 Operations Guide

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Cisco Systems 15216 EDFA2 manual Command Syntax Using the Snmp Agent, Operation Description, Snmp Operation Types