[mrtg] Re: Caching SNMP Responses

[Alistair.McGlinchy at marks-and-spencer.com]

Kia Ora Vanish,

Yes I thought that was an option, however I've foolishly written many
trivial perl scripts to analyse the .log format.  

Looks like I'm going to have to knuckle down and move to RRDs like I told
myself to do last year,

Cheers

Alistair

> -----Original Message-----
> From: Vanish Pattni (DSL AK) [mailto:VanishP at datacom.co.nz] 
> Sent: 03 December 2002 02:08
> To: 'Alistair.McGlinchy at marks-and-spencer.com'; mrtg at list.ee.ethz.ch
> Subject: RE: [mrtg] Caching SNMP Responses 
> 
> 
> What I do is record the data for the two devices separately. 
> Then with the recorded data in rrd files I use RRGrapher to 
> get data from the two rrd files and graph them together. 
> Effectively tyhis separates my data collection from graphing 
> and gives me frredom to do whatever I want with the data.
> 
> Hope that helped or was slightly insightful.
> 
> Vanish
> 
> -----Original Message-----
> From: Alistair.McGlinchy at marks-and-spencer.com
> [mailto:Alistair.McGlinchy at marks-and-spencer.com]
> Sent: Tuesday, December 03, 2002 1:35 PM
> To: mrtg at list.ee.ethz.ch
> Subject: [mrtg] Caching SNMP Responses 
> 
> 
> Hi All,
> 
> Is there any way to tell MRTG to Cache it's SNMP queries so 
> that it only polls a device once, even if the ip/port combo 
> is mentioned multiple times in a config file.
> 
> For example I would like to graph the CPU of two routers, and 
> also have a graph of the sum of the CPUs of both routers (so 
> that I know what my disaster-recoverable capacity is). 
> 
> My CFG file looks similar to the following example. 
> 
> Target[RouterA1]:.1.3.6.1.4.1.9.2.1.58.0&.1.3.6.1.4.1.9.2.1.58
> .0:public at x.y.
> z.1
> <etc> 
> Target[RouterA2]:.1.3.6.1.4.1.9.2.1.58.0&.1.3.6.1.4.1.9.2.1.58
> .0:public at x.y.
> z.2 
> <etc> 
> Target[RouterA1andA2]:.1.3.6.1.4.1.9.2.1.58.0&.1.3.6.1.4.1.9.2
> .1.58.0:public
> @x.y.z.1 + 
>  
> .1.3.6.1.4.1.9.2.1.58.0&.1.3.6.1.4.1.9.2.1.58.0:public at x.y.z.2  
> <etc>
> 
> So the router is polled 4 times even though only two SNMP 
> polls should be required and the duplicate OID is requested 
> twice in the same frame.Can anyone suggest a way I can get 
> MRTG to poll these devices more efficiently? I'd ideally like 
> to have a lot more targets like "RouterA1andA2" but without 
> having to consider the overhead of doubling my SNMP traffic. 
> 
> I could, perhaps, do the addition using a backtick target to 
> read from the first line of the .log files, but that seems 
> awfully backward and inefficient.
> 
> Any suggestions? 
> 
> Alistair
> 
> 
> 
> --------------------------------------------------------------
> ---------
> 
> 
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> Michael House, Baker Street,
> London, W1U 8EP
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> 
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Registered Office:
Marks & Spencer p.l.c
Michael House, Baker Street,
London, W1U 8EP
Registered No. 214436 in England and Wales.

Telephone (020) 7935 4422 
Facsimile (020) 7487 2670

www.marksandspencer.com

Please note that electronic mail may be monitored.

This e-mail is confidential. If you received it by mistake, please let us know and then delete it from your system; you should not copy, disclose, or distribute its contents to anyone nor act in reliance on this e-mail, as this is prohibited and may be unlawful.

The registered office of Marks and Spencer Financial Services PLC, Marks and Spencer Unit Trust Management Limited, Marks and Spencer Life Assurance Limited and Marks and Spencer Savings and Investments Limited is Kings Meadow, Chester, CH99 9FB.

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