[mrtg] Re: SNMP OID'S

[Jerry Heidtke]

>is there a way around this?

Don't use Windows? Seriously, Microsoft's snmp support has always been
spotty, buggy, and in violation of several key parts of the standards. 

The ways around it are:

1. Use the hardware manufacturers' agents, if available. Compaq, HP, IBM,
Dell, and perhaps others all provide snmp agents for hardware monitoring
that are much better, more thorough, and more reliable than anything from
Microsoft.

2. Use perfmon stats. These are more reliable than the snmp stats from the
MS agent. There are several ways of using these in mrtg. See
http://www.wtcs.org/snmp4tpc/default.htm for one method, which uses a custom
built snmp agent extension to expose perfmon stats. See
http://www.wn.com.au/psimmo/ for a (better, IMO) method that requires no
additional agents on the boxes being monitored, and uses an external perl
script to feed the numbers back to mrtg.

3. Use WMI stats. Usually uses vbscript/cscript on the mrtg host to access
stats from remote server. Probably the most complex, but most reliable. This
is the way MS would recommend doing it, if you could get them to support the
use of a GPL performance monitoring solution (they'd love to sell you
MOM...). Don't have a link handy that describes exactly how to do this under
mrtg, perhaps someone else can supply one. MS has a tool called
"Scriptomatic" that writes vbscript to retrieve WMI counters.
http://www.microsoft.com/technet/scriptcenter/wmimatic.asp

Jerry

-----Original Message-----
From: Kenneth Falor [mailto:kfalor at bellgroup.com] 
Sent: Tuesday, February 04, 2003 12:34 PM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] SNMP OID'S


Content-Type: text/plain;
	charset="us-ascii"
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when I first saw this I thought I was nuts so I ignored it and moved on,
but now its beginning to annoy the life out of me.  Baldness is rapidly
approaching.
=20
I am measuring CPU usage on several W2K servers.  I use the following
tree 1.3.6.1.2.1.25.3.3.1.2.** which is host | hrDevice |
hrProcessortable | hrProcessorEntry | hrProcessorLoad and then the
instance's.  The problem is that on 2 out of 8 servers the instance
changes on reboot.   is there a way around this?
=20
=20
=20
Kenneth Falor, MCSA, MCP, A+
IT Operations
=20
=20
=20



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