Administrator Guide

208 Fabric OS Administrator’s Guide
53-1002920-02
Simple Network Management Protocol
7
Understanding MIBs
The management information base (MIB) is a database of monitored and managed information on
a device, in this case a Brocade switch. The MIB structure can be represented by a tree hierarchy.
The root splits into three main branches: International Organization for Standardization (ISO),
Consultative Committee for International Telegraph and Telephone (CCITT), and joint ISO/CCITT.
These branches have short text strings and integers (OIDs) to identify them. Text strings describe
object names, while integers allow software to create compact, encoded representations of the
names.
Each MIB variable is assigned an object identifier (OID). The OID is the sequence of numeric labels
on the nodes along a path from the root to the object. For example, as shown in Figure 16, the
Brocade SW.MIB OID is:
1.3.6.1.4.1.1588.2.1.1.1
The corresponding name is:
iso.org.dod.internet.private.enterprise.bcsi.commDev.fibreChannel.fcSwitch.sw
The other branches are part of the standard MIBs, and the portions relevant to configuring SNMP
on a Brocade switch are referenced in the remainder of this reference.
FIGURE 16 Brocade MIB tree location
Access to MIB variables
Use a MIB browser to access the MIB variables: all MIB browsers perform queries and load MIBs.
mgmt (2)
sysObjectID (2)
iso (1)
org (3)
Brocade SW MIB
1.3.6.1.4.1.1588.2.1.1.1
dod (6)
internet (1)
experimental (3)
fcmgmt (94)
connSet (1)
enterprise (1)
private (4)
bcsi (1588)
mib-2 (1)
interface (2)
sysDescr (1)
system (1)
directory (1)