3Com Switch 7750 Configuration Guide

740 CHAPTER 68: SNMP CONFIGURATION

■ Define MIB view that a community can access.

■ Set read-only or read-write right to access MIB objects for the community. The

read-only community can only query device information, while the read-write

community can configure the device.

■ Set the basic ACL specified by the community name.

MIBs Supported by the

Device

The management variable in the SNMP packet is used to describe management

objects of a device. To uniquely identify the management objects of the device in

SNMP messages, SNMP adopts the hierarchical naming scheme to identify the

managed objects. It is like a tree, and each tree node represents a managed

object, as shown in Figure 189. Thus the object can be identified with the unique

path starting from the root.

Figure 189 Architecture of the MIB tree

The management information base (MIB) is used to describe the hierarchical

architecture of the tree and it 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 common MIBs supported by the system are listed in Table 594.

Table 594 Common MIBs

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