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MIB Objects
11-2 SNMP Management
11.2 MIB OBJECTS
A number of standard MIB specifications have been defined for managing network equipment.
SNMP compliant devices typically support one or more standard MIBs defined by the Internet
Engineering Task Force (IETF), in the form of Request for Comments (RFC) documents.
These MIBs provide a common method of managing devices, such as hubs and switches, and
network interfaces, such as Ethernet and token ring. The primary standard MIB, referred to as
MIB II, provides an overall view of the managed agent and must be supported, at least in part, by
all SNMP agents. In addition, proprietary MIB extensions are defined by commercial vendors for
managing device-specific functions of their products.
The switch supports six standard MIBs:
• RFC 1213 - Management Information Base for Network Management of TCP/IP based
Internets (MIB II)
• RFC 1493 - Definitions of Managed Objects for Bridges
• RFC 1573 - Evolution of the Interfaces Group of MIB II
• RFC 1643 - Definitions of Managed Objects for the Ethernet-like Interface Types
(Ethernet-Like MIB)
• RFC 1757 - Remote Network Monitoring Management Information Base
• IEEE 802.1Q - VLAN Bridge Management (Q-MIB)
The switch also supports Enterasys Networks proprietary MIB extensions.
11.2.1 RFC 1213 (MIB II)
RFC 1213 provides management of system-level parameters, including TCP/IP protocol-related
statistics, IP addressing, and interface statistics for each switch port. MIB II is the standard MIB
defined by RFC 1213. All agent devices operating SNMP are required to support at least part of
MIB II.
This MIB reports information about the protocols and network interfaces supported on the agent
itself, as well as other general information. The MIB is divided into a number of groups, each of
which corresponds to a specific protocol or set of information. Some groups are defined in other
RFC documents.