One of my 3011s started doing this about a week ago, interface 6-10 goes down for about a second every 2 hours.
Even went to replace it with a brand new one running 6.38.1 and latest firmware.
Starting to think it may have something to do with auto negotiation .
I am browsing this forum because I too have a new RB 3011, OS 6.38.1 and it is constantly link down/up on all frequently ports at the same time, give or take a second.
Ore the RB 3011 defective design? Google finds this has been a problem for a long time with this model?
Here is an example of the log:
12:36:42 interface,info ether1 link up (speed 1G, full duplex)
12:36:42 interface,info ether5 link up (speed 1G, full duplex)
12:36:43 interface,info ether2-master link up
12:40:37 system,info item added
12:40:37 system,info item added
12:48:35 interface,info ether1 link down
12:48:35 interface,info ether2-master link down
12:48:35 interface,info ether5 link down
12:48:35 system,info item removed
12:48:35 system,info item removed
12:48:38 interface,info ether1 link up (speed 1G, full duplex)
12:48:38 interface,info ether5 link up (speed 1G, full duplex)
12:48:39 interface,info ether2-master link up
12:48:43 system,info item added
12:48:43 system,info item added
16:28:41 interface,info ether1 link down
16:28:41 system,info item removed
16:28:41 system,info item removed
16:28:44 interface,info ether1 link up (speed 1G, full duplex)
16:28:45 system,info item added
16:28:45 system,info item added
16:33:23 interface,info ether9 link up (speed 100M, full duplex)
16:33:24 interface,info ether6-master link up
16:34:35 interface,info ether9 link down
16:34:36 interface,info ether6-master link down
16:34:36 interface,info ether9 link up (speed 1G, full duplex)
16:34:37 interface,info ether6-master link up
16:34:44 dhcp,info defconf assigned 192.168.88.254 to 6C:F0:49:5E:66:19
16:38:00 interface,info ether1 link down
16:38:00 interface,info ether2-master link down
16:38:00 interface,info ether5 link down
16:38:00 interface,info ether6-master link down
16:38:00 interface,info ether9 link down
16:38:00 system,info item removed
16:38:00 system,info item removed
16:38:03 interface,info ether1 link up (speed 1G, full duplex)
16:38:04 interface,info ether5 link up (speed 1G, full duplex)
16:38:04 interface,info ether9 link up (speed 1G, full duplex)
16:38:05 interface,info ether2-master link up
16:38:05 interface,info ether6-master link up
16:38:08 system,info item added
16:38:08 system,info item added