[mrtg] Re: How would you handle this?

McGlinchy, Alistair Alistair.McGlinchy at marks-and-spencer.com
Tue Sep 27 21:44:38 MEST 2005

>  So I'm currently graphing a bunch of counters for Bea 
> Weblogic. The way
> I have to do it now is by taking the exact OID like
> "
>" and
> graphing it. Problem is, when you add nodes, move priorities around,
> reboot in a different order, etc those OIDs will break. 

I have a similar problem monitoring the IPSec tunnels on a VPN
Concentrator. You never know who is on-line and what IP address they are
using until they connect, so I cannot be sure the OID to poll is
present. To solve this I have a Get_IP_Sec.pl script which uses
Net::SNMP to walk the connection table looking for the peers I am
interested in.

So my targets look like this:
Target[$target]: `perl Get_IP_Sec.pl $router_ip $community $dest_peer`

I would post you that code, but there are several problems with SNMP on
the VPN Concentrators (and some icky work arounds) so instead I have
attached script I use to poll the number of active wireless users on the
Axon switch, along with the most populated access point. Which is sort
of what you want anyway.



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