'Router has been disconnected' message

RouterOS Beginner Basics
1

Hi, I have a problem…
Router has been just installed.
After installation I have assigned one IP the address 192.168.52.1 to the interface ‘ether3’ (with ‘setup’ tool) and when I try to connect to router I receive the ‘Router has been disconnected’ message.

I tried to reboot, reinstall, mac-telnet and IP, clean install (only system and ppp packages)…

SSH working fine. WinBox not.

Interesting fact:

[admin@MikroTik] > tool mac-scan

MAC-ADDRESS         ADDRESS          AGE
00:17:31:36:C9:7E   192.168.52.10    1
00:15:17:61:9D:AE   192.168.52.10    1

The first MAC is a realy MAC of 192.168.52.10
The second MAC is a router’s(!) ‘ether3’ interface MAC

Hardware: x86 PC (1U server with 3 network cards)
Intel 82573E Gbe
Intel 82541PI Gbe
Intel PRO/1000 PT Dual Port

What to do?

P.S. After 10+ reinstalls OS has not found a license and generated new Software ID !
But we have already bought the license for old Software ID.

Sorry for my bad english, my native language is russian.

2

Greetings!

What etherX device is this “realy MAC” associated with?
00:17:31:36:C9:7E

And this is ether3?
00:15:17:61:9D:AE

I have this trouble occasionally on a Realtek Gigabit port. It will end up with two MACS sometimes, and not just on RouterOS, but any O.S.
I do not know why. :frowning:

3

00:17:31:36:C9:7E is my machine with WinXP. I tried 3 network adapters from realtek, marvell yukon and noname…
00:15:17:61:9D:AE is an ether3 interface of a router

I tried with 2 switch from dlink and acorp…
Tried with cross-cable…

In all cases the problem exists…

4

If those are different machines, they are showing the same IP address. Can’t do that. Well, I mean you can obviously, but you shouldn’t.

Reset the network settings on the machine that is supposed to be 192.168.52.1. I think it is set to the wrong IP. Looks like both are on 192.168.52.10