3Com 4200G 12-Port, Руководство по настройке

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278 C
HAPTER
33: SNMP C
ONFIGURATION
MIBs Supported by
the Device
The management variable in the SNMP packet describes 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 86.
Thus the object can be identified with the unique path starting from the root.
Figure 86 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 Figure 86, 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 248.
Table 248 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
A
2
6
1
5
2
1
1
2
1
B