I have a few LHG-R dishes with Quectel EC25-A LTE Modems. The OIDs for the LTE modem stats all end in “.3” instead of “.1” for one of the units.
What does the trailing digit represent here? Why would it be .3 for one of these units, but .1 for the rest of them?
Thank you, Chris
The last digit is the interface id. The interface id may vary since it depends on the order interface first appeared on the router. In theory, for same router, with same default is should be all the same. But… I’d imagine one of the routers shipped with different version and/or different QuickSet profile and/or LTE came up before ethernet (so it become 1).
It is kinda of annoying since the OID for “lte1” is not deterministic, but also kinda how SNMP generally work as there is another OID with the interface type (also ending in .3, or .1, in your case). The OID don’t change & you can’t change them, so if easy in your NMS, just using .1 instead .3 is easiest. Otherwise, you can reset configuration (and likely best without a SIM card inserted) and see if you get new OIDs that match others.
If your using the Dude, I have function that will “lookup” the right OID for a device when its added. See http://forum.mikrotik.com/t/how-to-track-lte-signal-using-the-dude/163250/1
Thank you for this (and the other details). My billing system has monitoring templates that expects the same OID list for a group of devices, so I can’t tweak it on a per device basis.
I do not recall the exact order in which these were installed, but for a while we’ve been using netinstall to push our configuration to these units. Perhaps this was one of the units I configured manually. I will try a reset and then try netinstalling again.
Is there an easy way to check interface ID that is used for the OID from within winbox or from the command line? The “#” for each interface is the same on both of these.
That sounds like it… netinstall vs manual be one way they change IDs. It could also be if you had a SIM installed, perhaps the LTE comes up before ethernet, but dunno.
Couple ways to check
/tool/snmp-get oid=.1.3.6.1.2.1.2.2.1.2.1 address=127.0.0.1 community=public
/tool/snmp-get oid=.1.3.6.1.2.1.2.2.1.2.3 address=127.0.0.1 community=public
Note the last TWO digits of OID. So 2nd last “2” above means the name field; while last digit is the interface.
Thank you for the ideas here, I see the problem and I think I have the solution. I checked the OIDs using the above command. It turns out the ppp-out interface was considered #1 on this particular radio. These EC25 cards come in a mode that uses the PPP interface, but you have to manually change it to make the LTE interface. This radio must have been installed with an EC25 card that was still in PPP mode and then changed (instead of changed first, and then installed).
Next time I’m on-site, I’ll try a factory default and see if that brings up the expected order!