OS SNMP Support Manual (620-000131-620, April 2005)

1-4

E/OS SNMP Support Manual

Introduction to SNMP

called Management Information Bases (MIBs). When an agent

supports a standard MIB, it agrees to provide and make available the

variables listed in the MIB.

A MIB is a hierarchical tree of groups and variables. Operators at a

network management station enter a command with supported

groups and variables from the MIB.

Figure 1-2 Retrieving or Setting Values Using MIBs

Standard MIBs

Standard MIBs are those created and approved by IETF and other

Internet standards bodies and are readily available for use with

SNMP network management stations. The standard MIBs provide a

baseline of common operations across a wide variety of managed

devices. Chapter 2 describes the standard MIBs used by the various

McDATA products.

Standard MIBs supported by McDATA products are:

• MIB-II (Internet MIB) as described in RFC 1213: supported by all

switches and directors.

• Fibre Alliance (FCMGMT) MIB, version 3.1: supported by EFC

Server, Sphereon 4500 Fabric Switch, Sphereon™ 3216 Fabric

Switch, Sphereon 3232 Fabric Switch, Intrepid™ 6064 Director,

Intrepid 6140 Director, ES-3016, ES-3032, and ED-6064.

Variable a

Variable b

Variable c

Variable d

Variable e

Variable f

Variable g

Agent

(Use MIB to

identify variable)

Managed

Device

Read status information

with GetRequest command

Set a variable to a value

with SetRequest command

NMS

MIB

Actual

Variable (object)

(x)y