check_snmp_netint, stats pb

I use to check the speed and the stae of my interfaces the plugin check_snmp_netint.pl (exchange.nagios.org/directory/Pl … ck/details) with this command:
/check_snmp_netint.pl -H $HOSTADDRESS$ -C $USER2$ --2 -n $ARG1$ -y -k -B -M -w$ARG2$ -c$ARG3$

So on my interface where my nagios server is directly connected (FA0/0 BI1800), the stats are show and calculated, but on the others interfaces i’ve this message:
“no usable data - 0 rows”, I don’t no where the problem could come.

%between%http://photomaniak.com/upload/out.php/t964250_Debits.PNG

Thanks per advance.

(Srry for my bad english i’m a french user.)