
SNMP Introduction
©2008 Allied Telesis Inc. All rights reserved.
54.16
AlliedWare Plus
TM
Operating System Software Reference C613-50003-00 REV E
Software Version 5.2.1
Check that the interface link up/down traps have been correctly configured:
awplus#show ip int vlan1.1 brief
SNMPv3
SNMPv3 is the third version of the Simple Network Management Protocol. The architecture
comprises the following:
■
entities that may be either managers, agents, or both
■
a management information base (MIB)
■
a transport protocol
At least one manager node runs the SNMP management software in every configuration.
Managed devices such as routers, servers, and workstations are equipped with an agent
software module. The agent provides access to local objects in the MIB that reflect activity and
resources at the node. The agent also responds to manager commands to retrieve values from,
and set values in the MIB.
SNMP MIB Views for SNMPv3
An SNMP MIB view is a arbitrary subset of objects in the MIB. Objects in the view may be from
any part of the object name space, and not necessarily the same sub-tree.
SNMP Groups
Groups were introduced as part of SNMPv3. They are the means by which users are assigned
their views and access control policy. Once a group has been created, users can be added to
them. In practice a number of groups would be created, each with varying views and access
security requirements. Users would then be added to their most appropriate groups. Each
Group name and Security Level pair must be unique within a switch.
SNMP Users
Users were introduced as part of SNMPv3. From a system perspective a user is represented as
an entity stored in a table that defines the access and authentication criteria to be applied to
access or modify the SNMP MIB data.
SNMP Target Addresses
Target addresses were introduced as part of SNMPv3. They specify the destination and user
that receives outgoing notifications such as trap messages. SNMP target address names must be
unique within the managed device.
SNMP Target Params
Target params were introduced as part of SNMPv3. They specify an entry in the
snmpTargetParamsTable. SNMP target params names must be unique within the managed
device.