[mrtg] Re: unknaszero

[Jeremy Fluhmann]

Ah-ha!  I'm guessing that you're using MRTG by itself.  You may want to 
look at using RRDTool for the graphing.  We use MRTG (w/unknaszero), 
RRDTool, and 14all.cgi.  MRTG runs every 5 minutes and RRDTool stores 
the data (if there is any, otherwise it stores a 0), 14all.cgi produces 
the graph whenever we want to see it.  This causes "in a way"  all 
graphs to be updated every 5 minutes.  When we took an interface down, 
it reported a flat line until we brought it back up.  RRDTool has many 
features to it and we use several of them.  I hope this will help you, 
it REALLY helped us out alot.

Good Luck!
Jeremy

George Chelidze wrote:

>
>> And, I don't know if this helps, but you might look at the cfgmaker
>> documentation about the following option:
>> --no-down    do not look at admin or opr status of interfaces.  Normally
>> cfgmaker will not include interfaces which are marked anything but
>> administratively and operationally UP. With this switch you get them 
>> all.
>
>
> I used cfgmaker one time when builded the cfg file. Now I use mrtg 
> with this cfg file. So if interface is listed in cfg and not UP mrtg 
> doesn't update graphs, until it became UP again. But before this 
> moment data is unknown as when the nas is down. No difference from my 
> point of view.
>
>> -------- Original Message --------
>> Subject: [mrtg] Re: unknaszero
>> From: "(Verstrooid) Profke" <profke at easynet.be>
>> Date: Fri, March 21, 2003 11:48 am
>> To: "George Chelidze" <wrath at geo.net.ge>, <mrtg at list.ee.ethz.ch>
>>
>>>> 1. If the data didn't come, then graph updates with 0 value
>>>> 2. On some devices, interface table contains interface entry only if
>>>> interface is up, in this case, graph doesn't update because mrtg
>>>> received data indicating there is no data in MIB with appropriate OID
>>>>
>>>> How do you folks think, is this correct? I'd like mrtg updates it's
>>>> graphs in both cases.
>>>>
>>>
>>> Updates will be made the moment the interface comes up again.
>>>
>>>
McLane Information Systems Division
-- Enterprise Networking Systems Group



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