Problem with LAN (rb433)

marck · February 13, 2010, 9:39pm

I have big problem with this model Routerboard. Wireless cards working ok but lan on every ether socket is down (only in 433 ad 433ah model - i have 6 rb destroyed in past two months). What is it? Black Serie? 1 - can be bad luck, 2-coincidence , but 6?

sergejs · February 15, 2010, 2:15pm

Where do you use RouterBOARD ? (Is it grounded)?
I hope you are using the latest version on RouterBOARD. What did you see on Ethernet leds, when other device is attached to the router?

shrek777 · June 16, 2011, 5:07pm

I have same problem, mikrotik is working but lan is down, i need to unplug jack and plug it back after that its works,

i cannot resolve this problem, its hapaning every two or three days

rodolfo · June 16, 2011, 7:07pm

hi sergejs, how do you recommend to ground a RB?
thanks

sergejs · June 17, 2011, 10:23am

rodolfo,
http://wiki.mikrotik.com/wiki/Grounding

shrek777,
what is the device model connected to other end?

rodolfo · June 17, 2011, 2:46pm

Thanks.
Do you think I must grond the shielded calble at both ends or only on the top ?

thanks

sergejs · June 21, 2011, 5:39am

Do you think I must grond the shielded calble at both ends or only on the top ?

No, you have to ground one end of the cable’.