How to deal with SNMP array within a probe

RouterOS The Dude
1

Hello

We have an small GPON network and we’d like to receive an alarm from DUDE if any of our ONUs gets disabled more than “X” times. We can snmpwalk the OLT MIB via the following OID

iso.org.dod.internet.private.enterprises.enterprisesx10428.enterprisesx10428x9.furukawa.fkMgmt.fkGpon.fkGponOnu.fkGponOnuTable.fkGponOnuEntry

and obtain an array where one of the columns is the deactivation down count for each ONU (see attached figure). The values I’m interested are in the “DownCount” column (fkGponOnuDownCount - INTEGER32).

Can anybody please walk me through how to create a SNMP Probe to alarm if any of the count values is above “X”?

Thanks for any help.
Maurício
furukawa-SLE-GPON-compact-mib.txt (51 KB)
olt-g4s-gpon-onu-array.png

2

Hello again

I’ve managed to create a Function that will return the maximum numeric value from the counters array:

max_fkGponOnuDownCount()
Code: max(oid_column(“iso.org.dod.internet.private.enterprises.enterprisesx10428.enterprisesx10428x9.furukawa.fkMgmt.fkGpon.fkGponOnu.fkGponOnuTable.fkGponOltEntry.fkGponOnuDownCount”))

Now I’ll try to create a Function Probe to alarm every time the function returns a value above our “X” treshold.

Maurício

3

interesting, thank you for sharing

4

Managed to define a Function Probe to monitor the ONU Deactivate Count based on the above function.

Function ont deactivate count.png
Question for the Dude experts: is there any “best practice” to define the Map Label Refresh Interval versus the Polling Probe Interval when using the same function/oid on both the Map Label and the Probe Check?

Thanks for any help.
Maurício