Introduction | SNMP Architecture | the Protocol
Structure of Management Information | Object Identifier
Management Information Base | Common Tasks | References

Management Information Base

MIB(Management Information Base) is a database type created to manage network devices. It is structured like a tree and can be found in the object "1.3.6.1.2.1"(iso.org.dod.internet.mgmt.mib).

It is divided into ten groups:

1. system - especifies some system information

2. interfaces - manage information of all interfaces on a system

3. at(Address Translation) - this group have one table with adress translation of all interfaces on system. It was deprecated by MIB-II

4. ip - defines statistical and status information of IP protocol

5. icmp - this group manages information of ICMP input/output messages

6. tcp - manages all information of TCP protocol, like active connections and used ports

7. udp - provides access to status information of all UDP endpoints, statistics and information of a UDP engine.

8. egp - manages several statistical and status information of EGP entity

9. transmission - provides textual conventions for transport adresses and domains

10. snmp - diplays some statistical information of snmp protocol.

The object identifies of each group is numbered from 1 to 10 respectively.

A complete manual of MIB-II can be found at:
The Internet Task Force - Management Information Base for Network Management of TCP/IP-based internets: MIB-II

And a complete information of MIB-I at:
The Internet Task Force - Management Information Base for Network Management of TCP/IP-based Internets.

Another simple reference of it is Wikipedia - Management Information Base (MIB).