[debian][cacti] ERROR: invalid rpn expression 'a,8,*'

[sunfun]

hello,

i have a problem with cacti
cacti is installed under debian 2.6.12-2-686
i can't generate one graph with a gigabit ethernet interface on a cisco switch 3550

i have already patched cacti 0.8.6h
mysql 5.0.18 is already installed and i've also configured cacti database correctly

i have seen lots of rrd files under the directory /var/www/cacti/rra

i don't know what the problem is, but i suppose i miss a template to create this graph

when i turn on debug mode in cacti, i have this error :

Code: Select all

 ERROR: invalid rpn expression 'a,8,*' 

can you help me please ?

thank you by advance

sunfun

[gandalf]

Please post the whole statement. In most cases, just the DEF statement a is missing. You'll have to add a Graph Item for it to make the rrd file available for graphing
Reinhard