Is it possible to save in/out packet data?
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if u see under interfaces, u can see the WAN, LAN and OPT1 interfaces with details for each, is it some how possible to be able to save the WAN in/out packet counter details such that it can last even a reboot on the alix so as to be able to monitor the monthly data transfer on the WAN interface for accounting purpose.
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That is what the RRD graphs do. Status > RRD Graphs
The "period" value on the monthly traffic graph would be your monthly total.
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but isnt that data lost on every reboot on nanobsd?
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No, it is saved at shutdown and restored at bootup. It is only lost if you lose power or pull the plug without doing a proper shutdown.
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Well, but it is not saved periodically. If your pfSense runs for a month and is then suddenly unplugged (not shutdown/no reboot) then you loose all of this. You need to have a cronjob that saves your rrd graphs periodically, at least you needed this with 1.2.3…
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could u plz guide on how to create the job to save it every hour or so?
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Sure, have a look at this thread: http://forum.pfsense.org/index.php?topic=10629.msg63490
