Chapter 12 SNMP

SNMP Management Information Bases

Table 12-1

SNMP Message 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 from within a table. With this operation, an SNMP

 

 

manager does not need to know the exact variable name. The SNMP manager

 

 

searches sequentially to find the needed variable from within the MIB.

 

 

 

get-response

 

Replies to a get-request, get-next-request, get-bulk-request, or set-request

 

 

sent by an NMS.

 

 

get-bulk-request

Fills the get-response with up to the max-repetition number of get-next

 

 

interactions, similar to a get-next-request.

 

 

 

set-request

 

Provides remote network monitoring (RMON) MIB.

 

 

 

trap

 

Indicates that an event has occurred. An unsolicited message is sent by an

 

 

SNMP agent to an SNMP manager.

 

 

 

12.5 SNMP Management Information Bases

A managed object, sometimes called a MIB object, is one of many specific characteristics of a managed device. The MIB consists of hierarchically organized object instances (variables) that are accessed by network-management protocols such as SNMP.

12.5.1 IETF-Standard MIBs for the ONS 15310-MA SDH

Table 12-2lists the IETF standard MIBs implemented in the ONS 15310-MA SDH SNMP agent. You must first compile the MIBs inTable 12-2. Compile the MIBS in Table 12-3next.

Caution If you do not compile MIBs the correct order, one or more might not compile correctly.

 

 

Table 12-2

IETF Standard MIBs Implemented in the ONS 15310-MA SDH SNMP Agent

 

 

 

 

 

 

 

 

 

 

RFC1

 

 

 

 

 

 

 

Number

Module Name

Title/Comments

 

 

 

 

 

 

 

IANAifType-MIB.mib

Internet Assigned Numbers Authority (IANA) ifType

 

 

 

 

1213

RFC1213-MIB-rfc1213.mib,

Management Information Base for Network

 

 

 

 

Management of TCP/IP-based internets:MIB-II

1907

SNMPV2-MIB-rfc1907.mib

Management Information Base for Version 2 of the

 

 

 

 

Simple Network Management Protocol (SNMPv2)

 

 

 

 

1253

RFC1253-MIB-rfc1253.mib

OSPF Version 2 Management Information Base

 

 

 

 

1493

BRIDGE-MIB-rfc1493.mib

Definitions of Managed Objects for Bridges

 

 

 

 

(This defines MIB objects for managing MAC bridges

 

 

 

 

based on the IEEE 802.1D-1990 standard between

 

 

 

 

Local Area Network (LAN) segments.)

 

 

 

 

2819

RMON-MIB-rfc2819.mib

Remote Network Monitoring MIB

 

 

 

 

 

 

 

 

 

 

Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

78-19417-01

 

 

 

 

12-5

 

 

 

 

 

 

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Cisco Systems Snmp Management Information Bases, IETF-Standard MIBs for the ONS 15310-MA SDH, Operation Description

15310-MA specifications

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