nut/docs/snmp.txt

Desc: Information about SNMP and Network UPS Tools
File: snmp.txt
Date: 16 March 2003
Auth: Arnaud Quette <arnaud.quette@free.fr> or <arnaud.quette@mgeups.com>

This document presents interactions between SNMP and Network UPS Tools.
This work is mostly sponsored by:
MGE UPS SYSTEMS <http://www.mgeups.com/opensource/>

There are two part in NUT for SNMP support:

1) the agent or server side

An SNMP agent provides information for its hardware.
In general, agents are embedded in SNMP card.

This part has to be implemented as a Net-SNMP sub agent, acting
as a NUT middleware (upsd level). Such software make a bridge
between NUT data and SNMP, thus allowing to monitor, through
SNMP, standard point to point UPSs (serial and USB).

This is part of the "UPS Sub-Agent" project with Net-SNMP team.


2) the client side

	* Introduction

An SNMP client communicates with an agent to acquire data.

This part, which has to be a NUT driver, is implemented by snmp-ups.
snmp-ups acts as a bridge from SNMP to NUT, thus allowing to monitor
in NUT any SNMP Agent (embedded or on a host).

The new snmp-ups driver now support multiple MIBS (SNMP structures
declaration). For more information on snmp-ups, have a look at its
manpage (man 8 snmp-ups).

	* Extending existing mib2nut information

	To be written...

	* Adding new mib2nut information

	To be written...


References:
- NUT SNMP Protocols Library Available at:
http://www.networkupstools.org/ups-protocols.html#_snmp