Allied Telesis AT-GS950/24, User Manual

Page: 278 / 366

Chapter 21: Simple Network Management Protocol SNMPv3
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Figure 98. MIB Tree
The AT-S109 Version 1.1.0 Management software supports the MIB tree,
starting with the Internet MIBs, as defined by 1.3.6.1. There are two ways
to specify a MIB view. You can enter the OID number of the MIB view or its
equivalent text name. For example, to specify MIBs in the Internet view,
you can enter the OID format “1.3.6.1” or the text name “internet.”
In addition, you can define a MIB view that the user can access or a MIB
view that the user cannot access. When you want to permit a user to
access a MIB view, you include a particular view. When you want to deny
a user access to a MIB view, you exclude a particular view.
After you specify a MIB subtree view you have the option of further
restricting a view by defining a subtree mask. The relationship between a
MIB subtree view and a subtree mask is analogous to the relationship
between an IP address and a subnet mask. The switch uses the subnet
mask to determine which portion of an IP address represents the network
address and which portion represents the node address. In a similar way,
the subtree mask further refines the subtree view and enables you to
restrict a MIB view to a specific row of the OID MIB table. You need a
thorough understanding of the OID MIB table to define a subtree mask.
SNMPv3
Configuration
Process
The SNMPv3 parameters are contained in the following tables for user
configuration:

SNMPv3 User/Group table

SNMPv3 Access table

SNMPv3 View table

SNMPv3 Community table

Trap Management
The SNMPv3 configuration information must be entered in a specific
sequence:
Note
The SNMP Interface must be activated first. See “User Interface
Configuration” on page 43
1. You create a User Name and associated Group Name in the SNMPv3
User/Group table.
2. The View Names are defined in the Access table for each Group
Name.
3. The MIB view is then defined in the SNMPv3 View table for each View
Name.