Technical data

346 CHAPTER 11: SYSTEM MANAGEMENT

SNMP Versions and

Supported MIB

To uniquely identify the management variables of a device in SNMP messages,

SNMP adopts the hierarchical naming scheme to identify the managed objects. It

is like a tree. A tree node represents a managed object, as shown in the figure

below. Thus the object can be identified with the unique path starting from the

root.

Figure 4 Architecture of the MIB Tree

The MIB (Management Information Base) is used to describe the hierarchical

architecture of the tree, and is the set defined by the standard variables of the

monitored network device. In the above figure, the managed object B can be

uniquely specified by a string of numbers {1.2.1.1}. The number string is the

Object Identifier of the managed object.

The current SNMP Agent of Ethernet switch supports SNMP V1, V2C and V3. The

MIBs supported are listed in the following table.

Configuring SNMP Configuring SNMP includes tasks that are described in the following sections:

Tab le 44 MIBs Supported by the Ethernet Switch

MIB Attribute MIB Content References

Public MIB MIB II based on TCP/IP network

device

RFC1213

BRIDGE MIB RFC1493

RFC2675

RIP MIB RFC1724

RMON MIB RFC2819

Ethernet MIB RFC2665

OSPF MIB RFC1253

IF MIB RFC1573

Private MIB DHCP MIB

QACL MIB

ADBM MIB

RSTP MIB

VLAN MIB

Device management

Interface management