Symbol Wireless Access Points

cacti_user · Post by **cacti_user** » Wed Mar 21, 2007 6:55 am

Hi All,
I have created a custom xml file which contains some OID's of fields that I want to monitor.
I have just about managed to create a graph that details the Maximum numbers of Mobile Units attached to an Access Point and the Current number of mobile units attached.
But the problem I have is that the graphs do not appear to be accurate or least they are not displaying exactly the information I want.

So I would like to know whether it is possible to use cacti to display the value that it gets when it polls for that specific oid.

please see output from my log file:
03/21/2007 10:58:04 AM - CMDPHP: Poller[0] Host[21] DS[1565] SNMP: v2: XXX.XXX.XXX.XX, dsname: apCurrentMUs, oid: .1.3.6.1.4.1.388.1.8.2.8.1.0, output: 2

the log shows that it has read the OID and it's value is 2, i.e there are 2 mobile units/clients attached to the wireless access point.

So I want my graph to show as gprint or some text (whatever is correct to use) that the current number of mobile units attached is 2.
I do not want an average or anything else, I want the graph to display whatever value it gets back on its last poll, be it whatever number, I do not want any calculation to be performed.
Is that possible?

I've played around with Data Source Items Types and Graph Template Items, but I can't get it to display the value that was last read in the poll.

Thankyou in advance for your help.

Post by **gandalf** » Wed Mar 21, 2007 11:23 am

This is not possible, if this should be done exactl as described. This is due to the fact how rrdtool works. It will always perform time jitter correction for update times that are not an exact multitude of 300 sec. Usually, this are small deviations and you may get around it by rounding (e.g. introducing a GPRINT Preset).
Next issue to pay attention to is the "rate". rrdtool will always store rates. You may have to multiply by 300 to get the "basic" value. Post some numbers to clarify
Reinhard

cacti_user · Post by **cacti_user** » Tue Mar 27, 2007 5:17 am

Hi,
Thanks for taking the time to read and answer my question.
So I take it that I cannot use the exact values, but just to clarify further (perhaps I did not explain myself clearly), Is it possible to display the latest value read (not as a graphed value) but instead as text for example like you can display the |host_description| etc..

Reagrds

Post by **gandalf** » Thu Mar 29, 2007 2:15 pm

Sure. Add a graph item using CF=LAST for this
Reinhard

Cacti