Ubiquiti LTE device show corrupt serial numbers

Thanks for looking at this and with the update installed, the repeated poling message have stopped and the record no longer shows a serial number.

Thanks everyone

It seems that this device didn't respond to the serial (mac address) query this poll : 

{{}}

CMD[/usr/bin/snmpget -v2c -c *** -Pud -Ih -OQUvx --hexOutputLength=0 -m UBNT-AFLTU-MIB -M /opt/observium/mibs/rfc:/opt/observium/mibs/net-snmp:/opt/observium/mibs/ubiquiti 'udp':'hhhnroofap-a.hughes.ad.cam.ac.uk':'161' afLTUMac.0]

CMD EXITCODE[0]
CMD RUNTIME[0.0275s]

STDOUT[{}}}{{{}No Such Object available on this agent at this OID{}}}{{{}]
SNMP STATUS[FALSE]
SNMP ERROR1000 - Failed response

SQL[UPDATE `devices` set `uptime` ='21931026',`version` ='',`hardware` ='',`serial` ='',`last_polled` =NOW(),`last_polled_timetaken` ='1.5784' WHERE `device_id` = '38']SQL RUNTIME[0.00293589s] 
o Updated Data         uptime, version, hardware, serial, last_polled, last_polled_timetaken

Though it had a garbage serial in the database already from the previous poll:

  [serial]                    => string(8; UTF-8) "ô?¿i+"

You should re-run the poll a couple of times to check for these parts and see what the device is returning for afLTUMac.0

./poller.php -h <device_id> -m os -d

Or you can manually run the snmpget command a few times and see what it returns over time (might only change infrequently, or every poll).

This definitely looks like a vendor bug that Ubnt need to fix.

adam.

Your device seems have an memory leak and return random data on requests serial Oids.

I added checks for valid serials for this os.
Issue should be fixed in r12011.

New file uploaded

This looks like the device has a memory leak or something and is returning random data for the serial number.

As Mike said, the poller debug output starts half way through at the beginning of the mempools module. The serial is collected near the beginning in the system module. You can do a shorter debug with :

./poller.php -h <device_id> -m system -d

adam.

Please make snmpdump from an LTE device (as Bot requested).
You attached not useful output (not full poller debug).

General questions and device support can be discussed in our Discord channel, click here to join.

Please make and attach additional information about the device:

• full snmp dump from device:

  snmpwalk -v2c -c <community> -t 3 -Cc --hexOutputLength=0 -ObentxU <hostname> .1 > myagent.snmpwalk

  snmpwalk -v2c -c <community> -t 3 -Cc --hexOutputLength=0 -ObentxU <hostname> .1.3.6.1.4.1 >> myagent.snmpwalk

  If device not support SNMP version 2c, replace -v2c with -v1.

• If you have problems with discovery or poller processes, please do and attach these debugs:

  ./discovery.php -d -h <device>

  ./poller.php -d -h <device>

• additionally attach device and/or vendor specific MIB files

This comment is added automatically.