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.

The SunATM software has been designed to take advantage of this framework if it is installed on a system running Solaris 2.6, 7, or 8. The files necessary for the ATM SNMP agent to be recognized by the master agent (atm.reg and atm.rsrc) are copied under /etc/snmp/conf by the S00sunatm startup script if it detects that the system is running Solaris 2.6, 7, or 8. SNMP requests pertaining to the ATM Forum subtree (atmForum) are forwarded to the atmsnmpd from the master agent. In addition, atmsnmpd binds, by default, to port 1000, rather than 161, under Solaris 2.6 or later. The UDP port may still be changed using atmadmin, but the default will be 1000 in Solaris 2.6, 7, or 8.