SNMP traffic monitoring issues after update to v7.15.3

RouterOS General
1

After updating the software and firmware to v7.15.3, I noticed that RouterOS started reporting some weird data through SNMP. You can see in the attached image. It shows the traffic for the 48 hours between updating and not.

This is the traffic from sfp-sfpplus1 and sfp-sfpplus2 of a CCR2116-12G-4S+ being collected every 30 seconds or so via SNMPv3 through Zabbix and displayed in Grafana.

I can observe the same behavior if I collect data from the bonding1 interface that aggregates the afore mentioned two SFP+ ones.

Anyone else experiencing anything like this? Is this a known bug?

Worth noting that this weird traffic spikes are only observed on this box and this CCR’s only purpose is to do CGNAT, I cannot see those spikes on the other end of those SFP+ connections nor anywhere else in the network.
Screenshot 2024-08-11 184919.png

2

I get outages from DUDE checking PSU Status 7.15.3 on a CCR2116-12G-4S+. It just doesnt answer SNMP Requests for a while then again. 2 other CCR2116-12G-4S+ with 7.14.3 behave normal. CPU is low.

oid(“1.3.6.1.4.1.14988.1.1.3.15.0”)
oid(“1.3.6.1.4.1.14988.1.1.3.16.0”)

Wireshark shows SNMP Packets to the router but no response.