Sun Microsystems SunATM 3U, Installation And User Manual

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74 SunATM 3U CompactPCI Adapter Installation and User’s Guide • February 2001
FIGURE 8-1
Using
atmsnmpd
as a Forwarding Agent
Note – If you do not specify a forwarding port for unknown requests,
atmsnmpd
will respond with a “No Such Name” error to requests for MIBs that it does not
support. If you do specify a forwarding port,
atmsnmpd
instead forwards the
request to that port. Responses received from the agent running on the forwarding
port are sent to the requesting SNMP manager with no modification. If the agent
does not respond, then
atmsnmpd
does not send a response back.
SNMP and Solaris
The ATM SNMP agent in SunATM supports a framework for SNMP agents;
however, this means that its setup depends on the version of the Solaris operating
environment in which it is running. This section discusses those differences, which
are mostly transparent to the user.
Solaris 2.6, Solaris 7, and Solaris 8 Compatible Software
The Solaris 2.6, 7, and 8 operating environments include a bundled SNMP agent that
is designed to run as a master agent, binding by default to UDP port 161. Configure
other agents to listen to other UDP ports and act as subagents, then configure the
master agent to forward particular requests to those subagents. This framework
provides a single agent at port 161 with the combined capabilities of the master
agent and all the additional subagents.
other_snmpd
1000 161
SunATM Host
Forwarding channel
UDP
atmsnmpd