Snmp Versions; Mibs Supported By The Device - H3C S7500 Series Operation Manual

Operation Manual – SNMP and RMON
H3C S7500 Series Ethernet Switches

1.1.2 SNMP Versions

Currently an SNMP agent of a device supports SNMPv3, and is compatible with
SNMPv1 and SNMPv2c.
SNMPv3 adopts user name and password authentication.
SNMPv1 and SNMPv2c adopt community name authentication. SNMP packets failing
to pass community name authentication are discarded. A community name is used to
define the relationship between SNMP NMS and SNMP agents. Similar to passwords,
a community name can limit access to SNMP agents from the SNMP NMS. You can
define the following features relevant to a community name.
Define a MIB view that a community name can access.
Assign read-only or read-write access right to MIB objects for the community
name. A community name with read-only access right can only query the device
information, while a community name with read-write access right can not only
query the device information but also configure the device.
Set the basic ACL specified by the community name.

1.1.3 MIBs Supported by the Device

The management variable in a SNMP packet is used to describe a management object
of a device. To uniquely identify a management object of a device in an SNMP packet,
SNMP adopts the hierarchical naming scheme to identify managed objects. The
hierarchical architecture is like a tree, and each tree node represents a managed object,
as shown in
starting from the root.
1
5
A
Figure 1-1
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 devices. In
identified by a string of numbers {1.2.1.1}. The number string is the object identifier of
the managed object B.
Common MIBs supported by the system are listed in
Figure 1-1. In this way, an object can be identified through a unique path
1
2
1
1
2
B
6
Architecture of the MIB tree
2
Figure 1-1, the managed object B can be uniquely
Table
1-2
Chapter 1 SNMP Configuration
1-1.