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BCM50 Administration Guide

Appendix A

Management Information Bases

This appendix describes the Management Information Bases (MIBs) supported by the BCM50.
A MIB is a virtual information store that contains a collection of objects that are managed using
Simple Network Management Protocol (SNMP). The MIB is software that defines the data
reported by a computing or network device and the extent of control over that device.

About SNMP MIBs

A MIB enables access to the managed objects of a system. MIBs are managed using a network
management protocol, such as Simple Network Management Protocol (SNMP).
The BCM50 main unit supports the following MIBs:
MIB-II (RFC1213)
SNMP-FRAMEWORK-MIB (RFC2261)
ENTITY-MIB (RFC273)
HOST-MIB (RFC2790)
IF-MIB (RFC2863)
BCM Small Site MIB
BCM Small Site Events MIB
BCM50 units equipped with an integrated router (BCM50e, BCM50a, BCM50be, and BCM50ba)
also support RFC 1231 — MIB-II and a private MIB. For more information, see the BCM50
Networking Configuration Guide (NN40020-603).
You can use BCM MIBs to monitor the network element; you cannot use BCM MIBs to configure
the element. Read-only access is provided for all supported MIB objects.

MIB file descriptions

BCM50 MIBs belong to two categories:
Standard MIBs — include MIB-II (RFC1213), SNMP-FRAMEWORK-MIB (RFC2261),
ENTITY-MIB (RFC273), HOST-MIB (RFC2790), and IF-MIB (RFC2863)
Nortel MIBs — include BCM Small Site MIB and BCM Small Site Events MIB