[mrtg] Problem with monitoring an OID

t.klein at sicom-ag.de t.klein at sicom-ag.de
Mon May 22 19:11:03 MEST 2006

Hello there,
i am monitoring our Bintec-Router with MRTG. No problem so far, works 
quite good. I used cfgmaker for the first cfg-File an did some editing on 
it, for working more in that way I want it.

Now i want to monitor the variable for the currently open IPSEC-Channels. 
The OID for this is .
With a small tool called snmpget.exe i can make a query to my router, and 
i get the right answer for the asked value.

Now i went to my MRTG-Configuration, by setting up a now query. I filled 
in in the target line:

Target[ipsecchannelsopen]: . at ipadress

in hope to get this work. But it failed with this answer:

ERROR: Target[][_IN_] 
$target->[0]{$mode} ' evaluated to ' ??????-É??
$0' instead of a number
ERROR: Target[][_OUT_] 
 $target->[0]{$mode} ' evaluated to ' ??????-É??
$0' instead of a number

I don't know where actually my problem is, I suppose that anything in my 
MRTG configuration is wrong, because the snmpget Utility gives out the 
right value by accessing the OID, so the OID must be correct, too. MRTG 
doesn't seem to get a number answered by the router, because of this, i 
think, i got this message. Now i have finished, did some tests but nothing 
went better.

Perhaps has anyone a solution for me?

Thanks a lot.....

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