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I have installed MRTG on ubuntu server to monitor network infra. In that I am only getting present day data.

I want to know old data also, how can I get the old data. Please help me

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Have you previously been collecting data? If not, there's no way to retroactively get old performance data.

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How can I collect previous data? Can you please let me know. – Caterpillar May 28 '13 at 12:33
You cannot. As I said, unless you've been collecting this data, there is no way to retroactively retrieve it. – EEAA May 28 '13 at 12:41
No No, What I meant to ask you is, From now how can I get it? – Caterpillar May 29 '13 at 3:57
As you always do with MRTG, you configure SNMPd on your devices, and configure MTRG to collect whatever data you want. – EEAA May 29 '13 at 4:09

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