How to monitor Equallogic PS SAN with snmp?

[Josh Wells]

Fantastic. Thanks so much to both of you for the information. Exactly
what I was looking for.



-----Original Message-----
From: Marcus [mailto:adesperateuser at googlemail.com] 
Sent: Wednesday, August 27, 2008 8:57 AM
To: Josh Wells
Cc: nagios
Subject: Re: [Nagios-users] How to monitor Equallogic PS SAN with snmp?

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Hi Josh,

Josh Wells schrieb:
> Thanks for the help Marcus. One last question, how do I find an OID? 
> Are these standardized values defined by the SNMP protocol or are they

> device specific?

There are standards, how to define OIDs in MIBs. Every manufacturer who
builds a device can define his own OIDs and put them in a so called MIB
for that device.
There is also a standard-MIB (called MIB2), which defines common stuff.
Take a look here:
http://www.et.put.poznan.pl/snmp/mib2/mib2.html

What you need to do, in order to determine, what information you can get
from your SNMP-capable device (your SAN), is to use some sort of
MIB-browser (either graphical or console-based), feed it with the MIB of
the device you want to monitor, and browse the OID-tree.
The MIB translates those weird rows of dots and numbers into something
human-readable.
(OID 1.3.6.1.2.1.2.2.1.2 could be an interface description, for
example.)

Here is a page with a couple of snmp-tools: ;-)
http://www.snmplink.org/snmpsoftware/forenduser/#6

This MIB-Browser is free and multiplatform (Java):
http://www.dwipal.com/mibbrowser.htm
Read the docs to learn how to load the MIB of your Equallogic-Device
into the program.

Greetz,
 Marcus

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