Issue between ONT and ERLite-3

Hi,

Having a bizarre issue between my fibre ONT, and my EdgeRouter, in which eth0 seems to drop link from the ONT for 2 seconds or so. Due to the drop, I don't seem to be having 'drop-outs' as such, however am getting the odd ping drop, which I'd expect. Logs show the following:

Mar 14 01:42:59 rtr01 kernel: eth0: Link downMar 14 01:43:01 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 14 01:53:57 rtr01 kernel: eth0: Link downMar 14 01:53:59 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 14 07:09:21 rtr01 kernel: eth0: Link downMar 14 07:09:23 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 14 18:38:58 rtr01 kernel: eth0: Link downMar 14 18:39:00 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 14 20:16:36 rtr01 kernel: eth0: Link downMar 14 20:16:38 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 14 21:24:33 rtr01 kernel: eth0: Link downMar 14 21:24:35 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 15 06:05:55 rtr01 kernel: eth0: Link downMar 15 06:05:57 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 15 06:57:49 rtr01 kernel: eth0: Link downMar 15 06:57:51 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0Mar 15 08:52:41 rtr01 kernel: eth0: Link downMar 15 08:52:43 rtr01 kernel: eth0: 1000 Mbps Full duplex, port 0

Anyone come across this before, and if so, how did you manage to fix this? I have run proper testing across the Cat6 run between the ONT and the EdgeRouter, with nothing of note coming from this. Possible issue with the ONT port?

Cheers