[FUGSPBR] monitoramento

[Alex]

Vitor Renato Alves de Brito wrote:

>Olá,
>
>Tava procurando neste momento alguma opção na referencia do MRTG que
>falasse sobre
>isto: http://people.ee.ethz.ch/~oetiker/webtools/mrtg/reference.html
>:-)
>
>Mais uma pergunta: se os contadores forem zerados qual será o
>comportamento do MRTG?
>  
>

Existem algumas opcoes de configuracao para tratar o comportamento do 
MTRG nestes casos.

Veja as mensagens abaixo:
http://www.ee.ethz.ch/~slist/rrd-users/msg03236.html
http://www.ee.ethz.ch/~slist/rrd-users/msg04704.html

[]',s
Alex

>
>On Fri, 21 Nov 2003, Alex wrote:
>
>  
>
>>Vitor Renato Alves de Brito wrote:
>>
>>    
>>
>>>Olá,
>>>
>>>Entrando no assunto, olhei no historico e vi que pode ser feito com o
>>>count do ipfw. Mas o count não é cumulativo?
>>>Como o MRTG vai tratar isto?
>>>
>>>Se for cumulativo e o MRTG nao tratar isto o gráfico vai ficar só subindo
>>>a cada mediçao
>>> 
>>>
>>>      
>>>
>>Leitura fortemente recomendada:
>>
>>http://faq.mrtg.org/what.html
>>
>>"MRTG is the /M/ulti /R/outer /T/raffic /G/rapher. It shows the 
>>bandwidth utilization over time.
>>
>>The way it works can be explained rather simple. Many routers (and other 
>>equipment) have counters in them. Read such a counter, wait for five 
>>minutes, read the counter again. Normally the counter will have 
>>increased by a certain amount (depending on the traffic it is counting). 
>>This increase happened during five minutes and you therefore know the 
>>amount of traffic that was sent through this device during that five 
>>minutes. Network traffic is usually measured per second. If the number 
>>calculated is divided by 300 (the amount of seconds in five minutes), 
>>you know the amount of bytes per second.
>>
>>Above paragraph describes how the /rate/ (number of bytes per second) is 
>>calculated. The other task of MRTG is to display this in an image. This 
>>is also not very hard to do; on the horizontal axis of the graph you can 
>>show the time lapsed, on the vertical axis you can show the rate.
>>
>>When this process is repeated you'll end up with an image showing the 
>>rate changing over time. This is what MRTG is. Of course the way it 
>>works isn't as simple as I described here but it comes close.(...)"
>>
>>-a
>>
>>    
>>
>>>Falou
>>>
>>>On Fri, 21 Nov 2003, Márcio Luciano Donada wrote:
>>>
>>> 
>>>
>>>      
>>>
>>>>Bom Dia,
>>>>você pode fazer uma regra com o ipfw + o mrtg, isso está no histórico da
>>>>lista bem certo, pra você contar os pacotes, que será registrado em bytes.
>>>>
>>>>Abraço,
>>>>Márcio
>>>>
>>>>   
>>>>
>>>>        
>>>>
>>>>>Alguem sabe como monitorar a banda de cada ip que passa por um gateway
>>>>>FreeBSD usando rrdtool ou mrtg
>>>>>
>>>>>muito obrigado
>>>>>até
>>>>>
>>>>>          
>>>>>
>>>>
>>>>
>>>>        
>>>>
>>>Até mais,
>>>
>>>---
>>>Vitor Renato Alves de Brito - System Manager
>>>Arte Final Provedor Internet - http://www.artefinal.com.br
>>>Alfenas/Lavras - Sul de Minas Gerais
>>>      
>>>
>Até mais,
>
>---
>Vitor Renato Alves de Brito - System Manager
>Arte Final Provedor Internet - http://www.artefinal.com.br
>Alfenas/Lavras - Sul de Minas Gerais
>  
>


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