RB 750 Auto Negotiation Problem

RouterOS General
1

Using V5.2 I’m having auto negotiation problem with all RB750.
Is it a BUG?
jan/02 00:05:19 interface,info ether1 link down
jan/02 00:12:22 interface,info ether1 link up (speed 100M, full duplex)
jan/02 00:12:49 system,info,account user admin logged in from 192.168.239.251 via winbox
jan/02 00:13:16 system,info system identity changed by admin
jan/02 00:13:38 system,info,account user admin logged out from 192.168.239.251 via winbox
jan/04 06:17:19 interface,info ether4 link down
jan/04 06:17:21 interface,info ether4 link up (speed 100M, full duplex)
jan/04 06:17:37 interface,info ether4 link down
jan/04 06:17:39 interface,info ether4 link up (speed 100M, full duplex)
jan/04 06:38:04 interface,info ether5 link down
jan/04 06:38:06 interface,info ether5 link up (speed 100M, full duplex)
jan/04 06:38:22 interface,info ether5 link down
jan/04 06:38:24 interface,info ether5 link up (speed 100M, full duplex)
jan/04 07:46:13 interface,info ether4 link down
jan/04 07:46:15 interface,info ether4 link up (speed 100M, full duplex)
jan/04 07:46:31 interface,info ether4 link down
jan/04 07:46:33 interface,info ether4 link up (speed 100M, full duplex

Thanks,
Tony

2

How long is the cable? Is the cable of good quality?

Force 10mbps and Disable Auto Negotiation on the interface.

3

What device is connected to this RB750? Are all ethernet ports affected? How is this board powered?

4

skillful,
There are different cable lengths (20' - 70')
I did force Force 10mbps and Disable Auto Negotiation.
Problem still continues with lost packages.
I downgraded to mt V 4.17 and no package lost.

kirshteins,
Some of them are Ubnt M5, Bullet hp5

Thanks

5

Try out the new ROS 5.4

6

00:00:09 system,info verified routeros-mipsbe-5.4.npk
00:00:09 system,info installed routeros-mipsbe-5.4
00:00:10 system,info router rebooted
00:00:12 interface,info ether1-Site link up (speed 100M, full duplex)
00:00:12 interface,info ether2-P2P-115 link up (speed 100M, full duplex)
00:00:12 interface,info ether3-AP_01-116 link up (speed 100M, full duplex)
00:00:12 interface,info ether4 link up (speed 100M, full duplex)
00:01:18 system,info,account user admin logged in from 192.168.239.252 via
00:08:46 system,info,account user admin logged out from 192.168.239.252 via
00:19:47 interface,info ether3-AP_01-116 link down
00:19:49 interface,info ether3-AP_01-116 link up (speed 100M, full duplex)
00:39:04 interface,info ether3-AP_01-116 link down
00:39:06 interface,info ether3-AP_01-116 link up (speed 100M, full duplex)
00:51:36 interface,info ether3-AP_01-116 link down
00:51:46 interface,info ether3-AP_01-116 link up (speed 10M, full duplex)
03:18:27 system,info,account user admin logged in from 192.168.239.252 via
03:18:43 system,info,account user admin logged in from 192.168.239.252 via

Same problem with 5.4

7

jan/02 00:00:09 system,info verified routeros-mipsbe-5.4.npk
jan/02 00:00:09 system,info installed routeros-mipsbe-5.4
jan/02 00:00:10 system,info router rebooted
jan/02 00:00:12 interface,info ether1-Site link up (speed 100M, full duplex)
jan/02 00:00:12 interface,info ether2-P2P-115 link up (speed 100M, full duplex)
jan/02 00:00:12 interface,info ether3-AP_01-116 link up (speed 100M, full duplex)
jan/02 00:00:12 interface,info ether4 link up (speed 100M, full duplex)
jan/02 00:01:18 system,info,account user admin logged in from 192.168.239.252 via
winbox
jan/02 00:08:46 system,info,account user admin logged out from 192.168.239.252 via
winbox
jan/02 00:19:47 interface,info ether3-AP_01-116 link down
jan/02 00:19:49 interface,info ether3-AP_01-116 link up (speed 100M, full duplex)
jan/02 00:39:04 interface,info ether3-AP_01-116 link down
jan/02 00:39:06 interface,info ether3-AP_01-116 link up (speed 100M, full duplex)
jan/02 00:51:36 interface,info ether3-AP_01-116 link down
jan/02 00:51:46 interface,info ether3-AP_01-116 link up (speed 10M, full duplex)
jan/02 03:18:27 system,info,account user admin logged in from 192.168.239.252 via
winbox
jan/02 03:18:43 system,info,account user admin logged in from 192.168.239.252 via
telnet
jan/02 03:19:11 system,info,account user admin logged out from 192.168.239.252 via
telnet
jan/02 03:20:29 system,info,account user admin logged out from 192.168.239.252 via
winbox
jan/02 03:22:20 system,info,account user admin logged in from 192.168.239.252 via
winbox
jan/02 03:23:06 system,info device changed by admin
jan/02 03:23:18 system,info,account user admin logged out from 192.168.239.252 via
winbox
jan/02 20:40:27 interface,info ether1-Site link down
jan/02 20:40:33 interface,info ether1-Site link up (speed 100M, full duplex)
jan/02 20:40:38 interface,info ether1-Site link down
jan/02 20:40:40 interface,info ether1-Site link up (speed 100M, full duplex)
jan/02 23:01:49 interface,info ether1-Site link down
jan/02 23:01:56 interface,info ether1-Site link up (speed 100M, full duplex)
jan/02 23:02:01 interface,info ether1-Site link down
jan/02 23:02:03 interface,info ether1-Site link up (speed 100M, full duplex)
02:49:52 interface,info ether1-Site link down
02:50:42 interface,info ether1-Site link up (speed 100M, full duplex)
02:50:47 interface,info ether1-Site link down
02:50:49 interface,info ether1-Site link up (speed 100M, full duplex)
03:37:29 interface,info ether1-Site link down
03:37:36 interface,info ether1-Site link up (speed 100M, full duplex)
03:37:42 interface,info ether1-Site link down
03:37:44 interface,info ether1-Site link up (speed 100M, full duplex)
06:17:26 interface,info ether1-Site link down
06:17:34 interface,info ether1-Site link up (speed 100M, full duplex)
06:17:39 interface,info ether1-Site link down
06:17:42 interface,info ether1-Site link up (speed 100M, full duplex)
06:49:45 interface,info ether1-Site link down
06:49:51 interface,info ether1-Site link up (speed 100M, full duplex)
06:49:56 interface,info ether1-Site link down
06:49:59 interface,info ether1-Site link up (speed 100M, full duplex)
17:28:19 interface,info ether1-Site link down
17:28:19 interface,info ether4-AP_02-117 link down
17:28:28 interface,info ether4-AP_02-117 link up (speed 100M, full duplex)
17:28:30 interface,info ether1-Site link up (speed 100M, full duplex)
17:28:36 interface,info ether1-Site link down
17:28:38 interface,info ether1-Site link up (speed 100M, full duplex)
17:28:45 interface,info ether4-AP_02-117 link down
17:28:47 interface,info ether4-AP_02-117 link up (speed 100M, full duplex)
17:31:08 interface,info ether1-Site link down
17:31:08 interface,info ether4-AP_02-117 link down
17:31:11 interface,info ether4-AP_02-117 link up (speed 100M, full duplex)
17:31:14 interface,info ether1-Site link up (speed 100M, full duplex)
17:31:19 interface,info ether1-Site link down
17:31:22 interface,info ether1-Site link up (speed 100M, full duplex)
17:31:28 interface,info ether4-AP_02-117 link down
17:31:29 interface,info ether4-AP_02-117 link up (speed 100M, full duplex)
23:26:57 interface,info ether1-Site link down
23:27:04 interface,info ether1-Site link up (speed 100M, full duplex)
23:27:10 interface,info ether1-Site link down
23:27:12 interface,info ether1-Site link up (speed 100M, full duplex)
23:51:19 system,info,account user admin logged in from 192.168.239.252 via winbox
23:53:13 system,info,account user admin logged in from 192.168.239.252 via telnet

8

contact support with supout.rif files

9

AsDsL, did you get this resolved? I have the same problem with RB750G and v5.21