[rrd-users] I need help with my rrd file

[alucard95]

Hello!!

I need some help with my rrd file. I want to do graphs of input and output
traffic of my network.

I create the follow rrd file:

rrdtool create switch.rrd         \
            DS:input:COUNTER:600:U:U   \
            DS:output:COUNTER:600:U:U  \
            RRA:AVERAGE:0.5:1:600      \
            RRA:AVERAGE:0.5:6:700      \
            RRA:AVERAGE:0.5:24:775     \
            RRA:AVERAGE:0.5:288:797    \
            RRA:MAX:0.5:1:600          \
            RRA:MAX:0.5:6:700          \
            RRA:MAX:0.5:24:775         \
            RRA:MAX:0.5:288:797

next i create a script to upload my rrd file : 

 #!/bin/sh
 a=0
 while [ "$a" != 0 ]; do
snmpwalk -v2c -c public xxx.xxx.xxx.xxx 1.3.6.1.2.1.2.2.1.10.4 > $in

snmpwalk -v2c -c public xxx.xxx.xxx.xxx 1.3.6.1.2.1.2.2.1.16.4 > $out
    
     # I can use N as a replacement for the current time
     rrdtool update /home/zabbix/switch.rrd N:$in:$out
     # sleep until the next 300 seconds are full
     perl -e 'sleep 30 - time % 30'
 done # end of while loop

But when i create a graph, he's empty. I think there is a problem with the
rrd file because when i do a rrdtool fetch, i have the answer "nan".

if anybody can help me

Thanks
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