HP StorageWorks 2/16V Brocade Fabric OS MIB Reference - Supporting Fabric OS 5 - Page 19

Understanding SNMP Basics 1 The management station can also receive traps, unsolicited messages from the switch agent if an unusual event occurs. See "Understanding SNMP Traps" on page 5 for more information. Management Station TRAP Agent FIGURE 3 SNMP Trap The agent can receive queries from one or more management stations and can send traps to up to six management stations. 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 4, the Brocade SW.MIB OID is: 1.3.6.1.4.1.1588 The corresponding name is: iso.org.dod.internet.private.enterprise.bsci Fabric OS MIB Reference 3 53-1000439-01