Ethernet not responding

RouterOS General
1

Thanks in advance for whom replies to this posting. I have 300 mikrotiks and every other day I have a random RB that the ethernet would stop responding. If I disable the ethernet port and reenable it. Then it starts working. That works every time. I have tried these versions of routeros with the same results(4.3/4.5/4.6/4.10/4.11). Each time I upgraded the routerboard bios to that version. I am going to try version 3.30 and 5.0beta5. I have replaced all hardware including the ethernet cables and POE twice. Is anyone else seeing this problem? Mikrotik support do you have anything else that I could try?

Topology:
Core router (main dhcp server with eoip tunnels to the access points)
Underneath the eoip is OSPF.

2

Hello

Yes i’ve come across this problem a few times. The board was a 133 or 133c
The only thing I can remember is that we had to replace a wireless card and
after that we never had any more dead ethernet ports.

Our 133’s had all 3 ports on a bridge and were wired to there backbone I
believe they were running 18v 600ma power supplies over POE

These boards have been retired from AP’s and been put as repeaters

Unfortunately that’s all the information I can give you for now, if i think of
something then I’ll update/add

Hellson

3

I have replaced all hardware. Its a software problem. I definately rules that out.