Ethernet links down for a few seconds (all used ports)

Hey,

does somebody know, why all used ethernet ports of our RB5009 are going down for a few seconds and then are up again? Only ether5 is not affected, but it’s not used currently. ether1-4 are foundation for bonding interface bonding1. It happened the first time as far as I am aware of and we are using the device for about one year. Nothing was changed within that period (except firmware updates).

Log:

18:01:28 interface,info ether1 link down
18:01:28 interface,info ether2 link down
18:01:28 interface,info ether3 link down
18:01:28 interface,info ether4 link down
18:01:28 interface,info ether6 link down
18:01:28 interface,info ether7 link down
18:01:29 interface,info ether8 link down
18:01:29 interface,info bonding1 link down
:
18:01:41 interface,info ether1 link up (speed 1G, full duplex)
18:01:45 interface,info ether2 link up (speed 1G, full duplex)
18:01:45 interface,info ether3 link up (speed 1G, full duplex)
18:01:45 interface,info ether4 link up (speed 1G, full duplex)
18:01:49 interface,info ether6 link up (speed 1G, full duplex)
18:01:49 interface,info ether7 link up (speed 1G, full duplex)
18:01:49 interface,info ether8 link up (speed 1G, full duplex)
18:01:49 interface,info bonding1 link up

System information:

                   uptime: 10w4d41m22s
                  version: 7.16.1 (stable)
               build-time: 2024-10-10 14:03:32
         factory-software: 7.4.1
              free-memory: 861.8MiB
             total-memory: 1024.0MiB
                      cpu: ARM64
                cpu-count: 4
            cpu-frequency: 350MHz
                 cpu-load: 1%
           free-hdd-space: 990.4MiB
          total-hdd-space: 1024.0MiB
  write-sect-since-reboot: 214304
         write-sect-total: 1065173
               bad-blocks: 0%
        architecture-name: arm64
               board-name: RB5009UG+S+
                 platform: MikroTik

Nevermind, your version is older than 7.17 so my previous idea is not applicable. You should likely generate supout and send it to MikroTik.