Sunday 1 November 2009

Cacti - Mikrotik Signal Strength Graph for client connection

[caption id="attachment_174" align="aligncenter" width="603" caption="cacti signal strength graph"]cacti signal strength graph[/caption]

Well it took me some time and confusion to get this graph going; at the end of the day it was a configuration error and the misuse/confusion between different templates found on the net.

In summary this is the correct parameters:

Cacti version: 0.8.7e
Mikrotik Router OS: 4.2

Device:

  • Added device with SNMP v1 & Mikrotik Template

  • Make sure the Associated Data Queries - Mikrotik - Wireless - Client is working.


Data Sources:

  • Selected Data Template - Mikrotik - Wireless - Signal Strength ( NOT Mikrotik - Wireless - RegTable Signal Strength)

  • Custom Data - Index Value - This is the numerical value (e.g. 4) corresponding to the wireless interface index id you want the signal strength measured for.

  • Custom Data - Index Type - ifIndex


Data Queries:

  • Use the Mikrotik - Wireless - Client data query located at <path_cacti>/resource/snmp_queries/mikrotik_wireless_client.xml and make sure the Data input method is: Get SNMP Data (indexed)


That should do the trick.

Where did I go wrong:

I had to add a new device for this to work, but once working I could duplicate the graph and associate it with the correct device. - don't know if this is a cacti bug or not?

I used the RegTable signal strength data template in error