We are using SNMP to monitor a RUT50X Router.
We have downloaded the MIB file from the router UI and can successfully query for values.
However, with snmpwalk when we query mSent, mSentToday, mReceived or mReceivedToday we get a signed integer, which means the value can be negative, as opposed to the MIB definition which should be an unsigned Counter64.
For instances, querying the router with MIBS=+TELTONIKA-MIB snmpwalk -m .snmp/mibs/teltonika.mib -v 2c -c public 192.168.1.1 .1 -d
returns the following:
Sending 48 bytes to UDP: [192.168.1.1]:161->[0.0.0.0]:41687
0000: 30 2E 02 01 00 04 06 70 75 62 6C 69 63 A1 21 02 0......public.!.
0016: 04 57 99 06 CE 02 01 00 02 01 00 30 13 30 11 06 .W.........0.0..
0032: 0D 2B 06 01 04 01 82 FC 32 02 02 01 15 01 05 00 .+......2.......
Received 52 byte packet from UDP: [192.168.1.1]:161->[0.0.0.0]:41687
0000: 30 32 02 01 00 04 06 70 75 62 6C 69 63 A2 25 02 02.....public.%.
0016: 04 57 99 06 CE 02 01 00 02 01 00 30 17 30 15 06 .W.........0.0..
0032: 0D 2B 06 01 04 01 82 FC 32 02 02 01 16 01 02 04 .+......2.......
0048: 94 80 01 0A ....
TELTONIKA-MIB::mSent.1 = Wrong Type (should be Counter64): INTEGER: -1803550454
Sending 48 bytes to UDP: [192.168.1.1]:161->[0.0.0.0]:41687
0000: 30 2E 02 01 00 04 06 70 75 62 6C 69 63 A1 21 02 0......public.!.
0016: 04 57 99 06 CF 02 01 00 02 01 00 30 13 30 11 06 .W.........0.0..
0032: 0D 2B 06 01 04 01 82 FC 32 02 02 01 16 01 05 00 .+......2.......
Received 52 byte packet from UDP: [192.168.1.1]:161->[0.0.0.0]:41687
0000: 30 32 02 01 00 04 06 70 75 62 6C 69 63 A2 25 02 02.....public.%.
0016: 04 57 99 06 CF 02 01 00 02 01 00 30 17 30 15 06 .W.........0.0..
0032: 0D 2B 06 01 04 01 82 FC 32 02 02 01 17 01 02 04 .+......2.......
0048: E7 23 9E DF .#..
TELTONIKA-MIB::mReceived.1 = Wrong Type (should be Counter64): INTEGER: -417095969
Note the value returned is an INTEGER and is negative. Whereas it should be a COUNTER64.
The Router Firmware is RUTX_R_00.07.04.5.
I have tried changing to use SNMP v1, 2 and 3 and the returned value is always the same.
Is it possible to change the SNMP response to return the correct data type?