User`s guide

Chapter 10 Special Features: SNMP 87
This chapter describes configuring SNMP, the network management
protocol that governs the exchange between nodes and stations.
About SNMP and the Digi Device Agent
This section introduces SNMP and network management in TCP/IP
networks and it describes the device server agent. It discusses the
following:
• Network management components
• SNMP agent
•SNMP traps
• MIB (management information base) support of the Digi device
agent
• Support traps of the Digi device agent
Network Management Components
The TCP/IP network management architecture contains the following
components:
• Managed nodes such as host systems, routers, terminal and com-
munications servers (such as device server) and other network
devices.
• One or more network managers (also called network management
stations), which are the points from which the network is managed
• Agents that reside on managed nodes and retrieve management
information and communicate this information to network managers.
• The network management protocol, SNMP, which governs the
exchange of information between the nodes and stations.
• Management information, which is the database of information
about managed objects. This database is called the management
information base (MIB).
SNMP Management Agent
Each managed node contains at least one agent—a component that
responds to requests from the network manager—that retrieves network
management information from its node and notifies the manager when
significant events occur.
SNMP Traps
An ‘eventing’ mechanism defined by SNMP is called a trap, which is a
report or “alarm” from a managed node to an SNMP manager that a
significant event has occurred.
MIB Support
The SNMP management agent supports the following MIBs:
Chapter 10
Special Features: SNMP