monitoring aggregated network traffic

On Fri, 17 Feb 2012, Jeremy Laidman wrote:

On Thu, Feb 16, 2012 at 6:26 PM, Martin Flemming
<user-f286aaa49a76@xymon.invalid> wrote:

Now i've found this thread and the solution :-)

http://lists.xymon.com/pipermail/xymon/2011-December/033323.html

I remember that thread now, but I didn't understand quite what was
going on.  I've recently been trying to solve a different problem
related to the same bit of code.

I've had to make an touch  ifsum.rrd and voila, the graph will be display

Is that an bug ?

Probably not really a bug.  It's just that the code that generates the
trends page was not (it seems) designed to handle graphs where the
graph name doesn't match the RRD filename.  It probably needs
enhancements to incorporate this as a feature.

The code also looks at FNPATTERN in the graph definition to tell the
code which filename to look at, and while it is probably not intended
for use with fixed filenames like you're using, it might still work,
without having to create a dummy file.

Hmmmm, ok before i start another thread to the similar problem,
i want to ask how i could solve this problem whith FNPATTERN ?

in my situation

[ifsum]
         TITLE Network Traffic
         YAXIS Bits/second
         DEF:inbytes0=ifstat.eth0.rrd:bytesReceived:AVERAGE
         DEF:inbytes1=ifstat.eth1.rrd:bytesReceived:AVERAGE
         DEF:inbytes2=ifstat.eth2.rrd:bytesReceived:AVERAGE
         DEF:inbytes3=ifstat.eth3.rrd:bytesReceived:AVERAGE
         CDEF:intotal=inbytes0,inbytes1,inbytes2,inbytes3,+,+,+
     CDEF:inbits=intotal,8,*
     LINE:inbits#FF0000:Aggregate inbound

  [ifsum]
 	  FNPATTERN ifstat(.+).rrd
           TITLE Network Traffic
           YAXIS Bits/second
           DEF:inbytes at RRDIDX@=@RRDFN@:bytesReceived:AVERAGE
             .
             .
             .

 	???

    thanks in advance

 	martin