Random Disconnections on all LAN Ports (RB3011)

Hello.

I am getting random disconnections eighter on POE port or other LAN ports. POE port is more vulnerable and get randon authoziation or disconet issues. I am not sure what could be the reason but please direct me how to diagnose this issue. I have Gigabit and Fast ethernets mixed in first 5 ports. Full log is below.

On other form I find some LAN port flooping issue in RB3011 but I am not sure if this is same :S

Your help is appreciated, hope this is not hardware issue.

07:15:14 interface,info ether1 link down 
07:15:14 interface,info ether2 link down 
07:15:14 interface,info ether3 link down 
07:15:14 interface,info ether4 link down 
07:15:14 interface,info ether5 link down 
07:15:14 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
07:15:14 pppoe,ppp,info pppoe-out1: disconnected 
07:15:14 pppoe,ppp,info pppoe-out1: initializing... 
07:15:14 pppoe,ppp,info pppoe-out1: connecting... 
07:15:14 pppoe,ppp,info pppoe-out1: terminating... 
07:15:14 pppoe,ppp,info pppoe-out1: disconnected 
07:15:14 pppoe,ppp,info pppoe-out1: initializing... 
07:15:14 pppoe,ppp,info pppoe-out1: connecting... 
07:15:16 interface,info ether1 link up (speed 100M, full duplex) 
07:15:16 interface,info ether3 link up (speed 1G, full duplex) 
07:15:16 interface,info ether4 link up (speed 100M, full duplex) 
07:15:16 interface,info ether1 detect UNKNOWN 
07:15:16 interface,info ether3 detect LAN 
07:15:16 interface,info ether5 link up (speed 100M, full duplex) 
07:15:16 interface,info ether4 detect LAN 
07:15:16 interface,info ether5 detect LAN 
07:15:17 interface,info ether3 link down 
07:15:17 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:17 pppoe,ppp,info pppoe-out1: disconnected 
07:15:17 pppoe,ppp,info pppoe-out1: initializing... 
07:15:17 pppoe,ppp,info pppoe-out1: connecting... 
07:15:19 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:19 pppoe,ppp,info pppoe-out1: disconnected 
07:15:19 pppoe,ppp,info pppoe-out1: initializing... 
07:15:19 pppoe,ppp,info pppoe-out1: connecting... 
07:15:19 interface,info ether3 link up (speed 1G, full duplex) 
07:15:19 interface,info ether3 detect LAN 
07:15:19 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:19 pppoe,ppp,info pppoe-out1: disconnected 
07:15:20 pppoe,ppp,info pppoe-out1: initializing... 
07:15:20 pppoe,ppp,info pppoe-out1: connecting... 
07:15:21 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:21 pppoe,ppp,info pppoe-out1: disconnected 
07:15:22 dhcp,info defconf deassigned 192.168.1.72 from E0:61:B2
07:15:22 pppoe,ppp,info pppoe-out1: initializing... 
07:15:22 pppoe,ppp,info pppoe-out1: connecting... 
07:15:23 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:23 pppoe,ppp,info pppoe-out1: disconnected 
07:15:26 pppoe,ppp,info pppoe-out1: initializing... 
07:15:26 pppoe,ppp,info pppoe-out1: connecting... 
07:15:26 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:26 pppoe,ppp,info pppoe-out1: disconnected 
07:15:30 interface,info ether2 link up (speed 100M, full duplex) 
07:15:30 interface,info ether2 detect LAN 
07:15:31 dhcp,info defconf assigned 192.168.1.72 to E0:61:B2
07:15:32 pppoe,ppp,info pppoe-out1: initializing... 
07:15:32 pppoe,ppp,info pppoe-out1: connecting... 
07:15:33 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:33 pppoe,ppp,info pppoe-out1: disconnected 
07:15:43 pppoe,ppp,info pppoe-out1: initializing... 
07:15:43 pppoe,ppp,info pppoe-out1: connecting... 
07:15:43 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:43 pppoe,ppp,info pppoe-out1: disconnected 
07:15:53 pppoe,ppp,info pppoe-out1: initializing... 
07:15:53 pppoe,ppp,info pppoe-out1: connecting... 
07:15:54 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:15:54 pppoe,ppp,info pppoe-out1: disconnected 
07:16:04 pppoe,ppp,info pppoe-out1: initializing... 
07:16:04 pppoe,ppp,info pppoe-out1: connecting... 
07:16:04 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:16:04 pppoe,ppp,info pppoe-out1: disconnected 
07:16:14 pppoe,ppp,info pppoe-out1: initializing... 
07:16:14 pppoe,ppp,info pppoe-out1: connecting... 
07:16:15 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:16:15 pppoe,ppp,info pppoe-out1: disconnected 
07:16:25 pppoe,ppp,info pppoe-out1: initializing... 
07:16:25 pppoe,ppp,info pppoe-out1: connecting... 
07:16:27 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:16:27 pppoe,ppp,info pppoe-out1: disconnected 
07:16:37 pppoe,ppp,info pppoe-out1: initializing... 
07:16:37 pppoe,ppp,info pppoe-out1: connecting... 
07:16:37 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:16:37 pppoe,ppp,info pppoe-out1: disconnected 
07:16:47 pppoe,ppp,info pppoe-out1: initializing... 
07:16:47 pppoe,ppp,info pppoe-out1: connecting... 
07:16:48 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
07:16:48 pppoe,ppp,info pppoe-out1: disconnected 
07:16:58 pppoe,ppp,info pppoe-out1: initializing... 
07:16:58 pppoe,ppp,info pppoe-out1: connecting... 
07:17:08 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
07:17:08 pppoe,ppp,info pppoe-out1: disconnected 
07:17:18 pppoe,ppp,info pppoe-out1: initializing... 
07:17:18 pppoe,ppp,info pppoe-out1: connecting... 
07:17:21 pppoe,ppp,info pppoe-out1: authenticated 
07:17:21 pppoe,ppp,info pppoe-out1: connected 
07:17:21 interface,info pppoe-out1 detect UNKNOWN 
07:17:27 interface,info pppoe-out1 detect INTERNET 
07:19:33 dhcp,info defconf deassigned 192.168.1.71 from E0:61: 
07:19:33 dhcp,info defconf assigned 192.168.1.71 to E0:61: 
08:49:08 dhcp,info defconf assigned 192.168.1.247 to 00:1F:3C
10:01:55 interface,info ether5 link down 
10:01:57 interface,info ether5 link up (speed 100M, full duplex) 
10:01:57 interface,info ether5 detect LAN 
10:02:02 dhcp,info defconf deassigned 192.168.1.72 from E0:61:B2
10:02:02 dhcp,info defconf assigned 192.168.1.72 to E0:61:B2
10:02:59 interface,info ether5 link down 
10:03:01 interface,info ether5 link up (speed 100M, full duplex) 
10:03:01 interface,info ether5 detect LAN 
10:39:34 interface,info ether5 link down 
10:39:36 interface,info ether5 link up (speed 100M, full duplex) 
10:39:36 interface,info ether5 detect LAN 
10:40:58 interface,info ether5 link down 
10:41:00 interface,info ether5 link up (speed 100M, full duplex) 
10:41:00 interface,info ether5 detect LAN 
10:41:05 dhcp,info defconf deassigned 192.168.1.72 from E0:61:B2
10:41:05 dhcp,info defconf assigned 192.168.1.72 to E0:61:B2
10:49:03 dhcp,info defconf assigned 192.168.1.245 to C8:02:10:
11:59:03 dhcp,info defconf deassigned 192.168.1.245 from C8:02:10:
12:01:10 interface,info ether5 link down 
12:01:12 interface,info ether5 link up (speed 100M, full duplex) 
12:01:12 interface,info ether5 detect LAN 
12:01:17 dhcp,info defconf deassigned 192.168.1.72 from E0:61:B2
12:01:17 dhcp,info defconf assigned 192.168.1.72 to E0:61:B2
12:05:58 dhcp,info defconf deassigned 192.168.1.254 from A8:9C:ED
12:22:46 dhcp,info defconf deassigned 192.168.1.246 from D6:EF:
12:34:05 dhcp,info defconf assigned 192.168.1.246 to D6:EF:
13:52:32 dhcp,info defconf assigned 192.168.1.245 to C8:02:10:
13:57:12 dhcp,info defconf assigned 192.168.1.254 to A8:9C:ED
14:02:33 dhcp,info defconf deassigned 192.168.1.245 from C8:02:10:
14:15:21 dhcp,info defconf assigned 192.168.1.245 to C8:02:10:
15:10:03 dhcp,info defconf deassigned 192.168.1.247 from 00:1F:3C
16:04:48 dhcp,info defconf deassigned 192.168.1.246 from D6:EF:
17:04:06 dhcp,info defconf assigned 192.168.1.251 to E8:2A:44:
17:54:28 interface,info ether5 link down 
17:54:30 interface,info ether5 link up (speed 100M, full duplex) 
17:54:30 interface,info ether5 detect LAN 
17:54:43 dhcp,info defconf deassigned 192.168.1.72 from E0:61:B2
17:54:43 dhcp,info defconf assigned 192.168.1.72 to E0:61:B2
18:14:56 dhcp,info defconf assigned 192.168.1.246 to D6:EF:
18:46:28 dhcp,info defconf assigned 192.168.1.247 to 00:1F:3C
18:54:08 system,info,account user totu logged in from 192.168.1.251 via winbox 
19:01:39 interface,info ether5 link down 
19:01:41 interface,info ether5 link up (speed 100M, full duplex) 
19:01:41 interface,info ether5 detect LAN 
19:01:43 interface,info ether5 link down 
19:01:45 interface,info ether5 link up (speed 100M, full duplex) 
19:01:45 interface,info ether5 detect LAN 
19:01:57 dhcp,info defconf deassigned 192.168.1.72 from E0:61:B2
19:01:57 dhcp,info defconf assigned 192.168.1.72 to E0:61:B2
19:45:13 system,info,account user totu logged out from 192.168.1.251 via winbox 
19:46:47 dhcp,info defconf deassigned 192.168.1.30 from FA:EC: 
19:46:58 dhcp,info defconf assigned 192.168.1.30 to FA:EC: 
20:13:02 interface,info ether1 link down 
20:13:02 interface,info ether2 link down 
20:13:02 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
20:13:02 interface,info ether3 link down 
20:13:02 interface,info ether4 link down 
20:13:02 interface,info ether5 link down 
20:13:02 pppoe,ppp,info pppoe-out1: disconnected 
20:13:02 pppoe,ppp,info pppoe-out1: initializing... 
20:13:02 pppoe,ppp,info pppoe-out1: connecting... 
20:13:02 pppoe,ppp,info pppoe-out1: terminating... 
20:13:02 pppoe,ppp,info pppoe-out1: disconnected 
20:13:02 pppoe,ppp,info pppoe-out1: initializing... 
20:13:02 pppoe,ppp,info pppoe-out1: connecting... 
20:13:05 interface,info ether1 link up (speed 100M, full duplex) 
20:13:05 interface,info ether3 link up (speed 1G, full duplex) 
20:13:05 interface,info ether4 link up (speed 100M, full duplex) 
20:13:05 interface,info ether5 link up (speed 100M, full duplex) 
20:13:05 interface,info ether1 detect UNKNOWN 
20:13:05 interface,info ether3 detect LAN 
20:13:05 interface,info ether4 detect LAN 
20:13:05 interface,info ether5 detect LAN 
20:13:06 interface,info ether3 link down 
20:13:08 interface,info ether3 link up (speed 1G, full duplex) 
20:13:08 interface,info ether3 detect LAN 
20:13:08 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:08 pppoe,ppp,info pppoe-out1: disconnected 
20:13:08 pppoe,ppp,info pppoe-out1: initializing... 
20:13:08 pppoe,ppp,info pppoe-out1: connecting... 
20:13:08 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:08 pppoe,ppp,info pppoe-out1: disconnected 
20:13:08 pppoe,ppp,info pppoe-out1: initializing... 
20:13:08 pppoe,ppp,info pppoe-out1: connecting... 
20:13:09 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:09 pppoe,ppp,info pppoe-out1: disconnected 
20:13:10 pppoe,ppp,info pppoe-out1: initializing... 
20:13:10 pppoe,ppp,info pppoe-out1: connecting... 
20:13:10 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:10 pppoe,ppp,info pppoe-out1: disconnected 
20:13:11 pppoe,ppp,info pppoe-out1: initializing... 
20:13:11 pppoe,ppp,info pppoe-out1: connecting... 
20:13:12 dhcp,info defconf deassigned 192.168.1.71 from E0:61: 
20:13:13 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:13 pppoe,ppp,info pppoe-out1: disconnected 
20:13:16 pppoe,ppp,info pppoe-out1: initializing... 
20:13:16 pppoe,ppp,info pppoe-out1: connecting... 
20:13:17 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:17 pppoe,ppp,info pppoe-out1: disconnected 
20:13:19 interface,info ether2 link up (speed 100M, full duplex) 
20:13:19 interface,info ether2 detect LAN 
20:13:20 dhcp,info defconf assigned 192.168.1.71 to E0:61: 
20:13:24 pppoe,ppp,info pppoe-out1: initializing... 
20:13:24 pppoe,ppp,info pppoe-out1: connecting... 
20:13:24 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:24 pppoe,ppp,info pppoe-out1: disconnected 
20:13:34 pppoe,ppp,info pppoe-out1: initializing... 
20:13:34 pppoe,ppp,info pppoe-out1: connecting... 
20:13:35 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:35 pppoe,ppp,info pppoe-out1: disconnected 
20:13:45 pppoe,ppp,info pppoe-out1: initializing... 
20:13:45 pppoe,ppp,info pppoe-out1: connecting... 
20:13:45 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:45 pppoe,ppp,info pppoe-out1: disconnected 
20:13:55 pppoe,ppp,info pppoe-out1: initializing... 
20:13:55 pppoe,ppp,info pppoe-out1: connecting... 
20:13:56 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:13:56 pppoe,ppp,info pppoe-out1: disconnected 
20:14:06 pppoe,ppp,info pppoe-out1: initializing... 
20:14:06 pppoe,ppp,info pppoe-out1: connecting... 
20:14:06 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:14:06 pppoe,ppp,info pppoe-out1: disconnected 
20:14:16 pppoe,ppp,info pppoe-out1: initializing... 
20:14:16 pppoe,ppp,info pppoe-out1: connecting... 
20:14:18 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:14:18 pppoe,ppp,info pppoe-out1: disconnected 
20:14:28 pppoe,ppp,info pppoe-out1: initializing... 
20:14:28 pppoe,ppp,info pppoe-out1: connecting... 
20:14:28 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:14:28 pppoe,ppp,info pppoe-out1: disconnected 
20:14:38 pppoe,ppp,info pppoe-out1: initializing... 
20:14:38 pppoe,ppp,info pppoe-out1: connecting... 
20:14:48 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
20:14:48 pppoe,ppp,info pppoe-out1: disconnected 
20:14:58 pppoe,ppp,info pppoe-out1: initializing... 
20:14:58 pppoe,ppp,info pppoe-out1: connecting... 
20:14:59 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
20:14:59 pppoe,ppp,info pppoe-out1: disconnected 
20:15:09 pppoe,ppp,info pppoe-out1: initializing... 
20:15:09 pppoe,ppp,info pppoe-out1: connecting... 
20:15:10 pppoe,ppp,info pppoe-out1: authenticated 
20:15:10 pppoe,ppp,info pppoe-out1: connected 
20:15:10 interface,info pppoe-out1 detect UNKNOWN 
20:15:16 interface,info pppoe-out1 detect INTERNET 
21:16:43 dhcp,info defconf deassigned 192.168.1.247 from 00:1F:3C
22:10:59 interface,info ether1 link down 
22:10:59 interface,info ether2 link down 
22:10:59 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
22:10:59 interface,info ether3 link down 
22:10:59 interface,info ether4 link down 
22:10:59 interface,info ether5 link down 
22:10:59 pppoe,ppp,info pppoe-out1: disconnected 
22:10:59 pppoe,ppp,info pppoe-out1: initializing... 
22:10:59 pppoe,ppp,info pppoe-out1: connecting... 
22:10:59 pppoe,ppp,info pppoe-out1: terminating... 
22:10:59 pppoe,ppp,info pppoe-out1: disconnected 
22:10:59 pppoe,ppp,info pppoe-out1: initializing... 
22:10:59 pppoe,ppp,info pppoe-out1: connecting... 
22:11:02 interface,info ether1 link up (speed 100M, full duplex) 
22:11:02 interface,info ether3 link up (speed 1G, full duplex) 
22:11:02 interface,info ether4 link up (speed 100M, full duplex) 
22:11:02 interface,info ether5 link up (speed 100M, full duplex) 
22:11:02 interface,info ether1 detect UNKNOWN 
22:11:02 interface,info ether3 detect LAN 
22:11:02 interface,info ether4 detect LAN 
22:11:02 interface,info ether5 detect LAN 
22:11:06 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:06 pppoe,ppp,info pppoe-out1: disconnected 
22:11:06 pppoe,ppp,info pppoe-out1: initializing... 
22:11:06 pppoe,ppp,info pppoe-out1: connecting... 
22:11:06 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:06 pppoe,ppp,info pppoe-out1: disconnected 
22:11:06 pppoe,ppp,info pppoe-out1: initializing... 
22:11:06 pppoe,ppp,info pppoe-out1: connecting... 
22:11:06 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:06 pppoe,ppp,info pppoe-out1: disconnected 
22:11:07 pppoe,ppp,info pppoe-out1: initializing... 
22:11:07 pppoe,ppp,info pppoe-out1: connecting... 
22:11:07 dhcp,info defconf deassigned 192.168.1.72 from E0:61:B2
22:11:07 dhcp,info defconf assigned 192.168.1.72 to E0:61:B2
22:11:08 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:08 pppoe,ppp,info pppoe-out1: disconnected 
22:11:09 pppoe,ppp,info pppoe-out1: initializing... 
22:11:09 pppoe,ppp,info pppoe-out1: connecting... 
22:11:10 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:10 pppoe,ppp,info pppoe-out1: disconnected 
22:11:13 pppoe,ppp,info pppoe-out1: initializing... 
22:11:13 pppoe,ppp,info pppoe-out1: connecting... 
22:11:14 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:14 pppoe,ppp,info pppoe-out1: disconnected 
22:11:16 interface,info ether2 link up (speed 100M, full duplex) 
22:11:16 interface,info ether2 detect LAN 
22:11:20 pppoe,ppp,info pppoe-out1: initializing... 
22:11:20 pppoe,ppp,info pppoe-out1: connecting... 
22:11:21 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:21 pppoe,ppp,info pppoe-out1: disconnected 
22:11:31 pppoe,ppp,info pppoe-out1: initializing... 
22:11:31 pppoe,ppp,info pppoe-out1: connecting... 
22:11:31 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:31 pppoe,ppp,info pppoe-out1: disconnected 
22:11:41 pppoe,ppp,info pppoe-out1: initializing... 
22:11:41 pppoe,ppp,info pppoe-out1: connecting... 
22:11:42 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:42 pppoe,ppp,info pppoe-out1: disconnected 
22:11:52 pppoe,ppp,info pppoe-out1: initializing... 
22:11:52 pppoe,ppp,info pppoe-out1: connecting... 
22:11:53 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:11:53 pppoe,ppp,info pppoe-out1: disconnected 
22:12:03 pppoe,ppp,info pppoe-out1: initializing... 
22:12:03 pppoe,ppp,info pppoe-out1: connecting... 
22:12:04 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:12:04 pppoe,ppp,info pppoe-out1: disconnected 
22:12:14 pppoe,ppp,info pppoe-out1: initializing... 
22:12:14 pppoe,ppp,info pppoe-out1: connecting... 
22:12:15 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:12:15 pppoe,ppp,info pppoe-out1: disconnected 
22:12:25 pppoe,ppp,info pppoe-out1: initializing... 
22:12:25 pppoe,ppp,info pppoe-out1: connecting... 
22:12:25 pppoe,ppp,info pppoe-out1: terminating... - failed to authenticate ourselves to peer 
22:12:25 pppoe,ppp,info pppoe-out1: disconnected 
22:12:35 pppoe,ppp,info pppoe-out1: initializing... 
22:12:35 pppoe,ppp,info pppoe-out1: connecting... 
22:12:45 pppoe,ppp,info pppoe-out1: terminating... - disconnected 
22:12:45 pppoe,ppp,info pppoe-out1: disconnected 
22:12:55 pppoe,ppp,info pppoe-out1: initializing... 
22:12:55 pppoe,ppp,info pppoe-out1: connecting... 
22:12:56 pppoe,ppp,info pppoe-out1: authenticated 
22:12:56 pppoe,ppp,info pppoe-out1: connected 
22:12:56 interface,info pppoe-out1 detect UNKNOWN 
22:12:57 system,info,account user totu logged in from 192.168.1.251 via winbox 
22:13:02 interface,info pppoe-out1 detect WAN 
22:13:30 system,info,account user totu logged out from 192.168.1.251 via winbox 
22:13:56 interface,info pppoe-out1 detect INTERNET 
23:01:42 system,info,account user totu logged in from 192.168.1.251 via winbox 
23:04:32 system,info,account user totu logged in from 192.168.1.251 via telnet

Regards,
Turkel.

What version are you running of ROS?

MikroTik RouterOS 6.48
Device is New.

Quite a few users reported port flapping on RB3011 when running ROS 6.48. The cure is to downgrade to ROS 6.47.8.