Well....autonegotiation failures happen sometimes, but typically those work ok when you force the speed on the link. In the case I'm thinking of, we could not get a working link no matter what. It was quite awhile ago now, but I think it would report a link was up while the input counters never climbed above 0.

We have a couple devices that don't work with Mikrotik devices at all. Putting a switch in between fixes it
but not ideal.

On Fri, Oct 17, 2014 at 10:14 AM, Adam Moffett via Af <[email protected] <mailto:[email protected]>> wrote:

    Yes...maybe. We had somebody not able to get link with an RB2011.
    I don't think we ever tried the 10/100 ports.  The customer ended
    up getting a different router.


        Is there an issue with the GigE ports on Mikrotik RB2011 not
        talking to some
        devices no matter what settings you try?  I had this with a
        customer's
        copper/fiber media converter, moved it to a 10/100 port on the
        2011 and all
        was good.  Now I think I'm seeing the same thing with a CTM.
        Setting the
        GigE port to only negotiate 100M didn't work, no amount of
        playing with the
        settings worked, had to physically move it to a 10/100 port.

        If this is a known problem and not my imagination, what other
        Mikrotik
        devices share this issue?  If this had been an 1100 or CCR or
        CSR, I might
        not have had a 10/100 port available and I would have been stuck.




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