[mrtg] Re: Problems monitoring Cisco devices

[Peter Glanville]

> I`m monitoring a WAN with Cisco devices.
> I have a 2600 router with 2  E1 unbalanced  interfaces with multiple 
> frame relay sub interfaces, each withits own
> DLCI . This interfaces are like S0/0.1. I used mrtg 2.1.11 and cfgmaker 
> detected all the subinterfaces very well.

For frame relay, you can monotor the entire interface (found by 
configmaker), or each DLCI seperately
The target line reads like: Target[<filename>]: 
frCircuitReceivedOctets.<interface>.<DLCI>&frCircuitSentOctets.<interface>.<DLCI>:<community>@<IPadress>

eg Target[framepipe4]: 
frCircuitReceivedOctets.2.4&frCircuitSentOctets.2.4:public at 1.2.3.4

You can verify the correct interface and DLCI numbers by walking the tree 
with something like GetIf

Now what about your CIR?
I set the Maxbytes to the CIR, and use AbsMax at the highest possible 
value (PIR or Access Circuit size)
Then percentage utilisation is calculated on CIR and may exceed 100%, but 
it will still get plotted


> The same error message receive when I run cfgmaker on a Cisco Pix 525 
> with three FastEthernet interfaces (inside, outside,dmz)

You need to define the MRTG machine in the Firewall, and define the 
community string
snmp-server host inside 1.2.3.4 poll
snmp-server community public
and if not on the inside interface, ensure snmp packets are allowed.


Peter



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