CCR1009-7G-1C-1S+ WAN port goes down irregularly

Hello,

i use this router in a small office installation. LT 6.45.9
In the 1S+port a Mikrotik S-RJ01 is installed to get a further 1G port. On this port i get the public ip from a Unitymedia ConnectBox, which is in gateway mode.
Every day several times i find such entries in the log:

sfp-sfpplus1 link down
dhcp-client on sfp-sfpplus1 lost IP address xxx.xxx.xxx.xxx - lease stopped locally

3 seconds later


sfp-sfpplus1 link up (speed 1G, full duplex)
dhcp-client on sfp-sfpplus1 got IP address xxx.xxx.xxx.xxx (which is the same public ip like before)

The former installed RB1100AH never had this behavior.

Any ideas on this issue?

Thanks
-faxxe

I would suggest you contact the Technical Support https://help.mikrotik.com/servicedesk