Snmp Agents; Message Delivery - Bay Networks Manager User Manual

Part 4 Control and Status Commands

SNMP Agents

Annex software includes a process known as the SNMP agent. The agent
process acts as a server in a typical client-server model:
• Annex Manager directs
agent.
• The agent processes the command and returns a response
indicating the command's success or failure and returning the
requested data for the

Message Delivery

SNMP messages are encapsulated in UDP datagrams. The UDP layer
does not guarantee delivery. When Annex Manager transmits a
or command, the agent is expected to respond with an error
get-next
message or with the requested data. Annex Manager uses a timeout and
retry mechanism to guarantee the SNMP command's delivery. If a timeout
occurs, Annex Manager does not know whether the command was not
received by the agent, or whether the response from the agent was lost.
The agent can also generate an unsolicited trap command and send it to
one or more network addresses. Receivers of traps do not respond to the
SNMP agent. For detailed information, please refer to Trap Hosts and
Traps later in this chapter.
The Annex supports only the cold-start, link-up, and link-down
traps defined in MIB-II.
Chapter 18 Annex Manager and SNMP
, , and commands to the
get set get-next
and commands.
get get-next
Annex Manager User Guide
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get set
18-3