I do have some simple queues and queue trees in the config, but on the lab 
router, I literally have my laptop connected to ether3 and nothing to any of 
the other ports, and they are talking over a /30 which has no queues applied.  
I could delete the rest of the config but I doubt that will make any difference.

Tomorrow I will contact Brian at Baltic and see if he knows anything about 
this.  Perhaps the reason they stopped selling this router wasn’t inability to 
get the Lanner boxes but rather a problem running RouterOS 6.x?  They seem to 
be selling some open box 1206 models, maybe customers were sending them back.


From: Faisal Imtiaz 
Sent: Sunday, January 03, 2016 6:56 PM
To: [email protected] 
Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet links

I was not offering a suggestion on source of the problem.. but more of a work 
around to try out (in regards to duplex mis-match).

Are you using any kind of queues ? in your configuration ? 


Regards.

Faisal Imtiaz
Snappy Internet & Telecom
7266 SW 48 Street
Miami, FL 33155
Tel: 305 663 5518 x 232

Help-desk: (305)663-5518 Option 2 or Email: [email protected]


--------------------------------------------------------------------------------

  From: "Ken Hohhof" <[email protected]>
  To: [email protected]
  Sent: Sunday, January 3, 2016 7:42:46 PM
  Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet links

  Both sides report 100FDX.

  Also, I see this on a production router where the two devices that negotiate 
100FDX are a Cambium PTP500 and a Ubiquiti Powerbridge.  I doubt those two 
radios plus my laptop would all have autonegotiation problems.

  Plus if it’s a duplex mismatch, why is the severity of the problem 
independent of the amount of traffic through the interface?  Whether on the lab 
router with no other traffic whatsoever, or the production router with 20-50 
Mbps of traffic at peak and almost zero in the middle of the night?  Duplex 
problems should get much worse with more traffic.  Plus I would expect 
something to show up in the interface stats on either the router or the 
connected device.


  From: Faisal Imtiaz
  Sent: Sunday, January 03, 2016 6:01 PM
  To: [email protected]
  Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet links

  hmm, since you are not seeing the problem with 1gig connections only 100FDX, 
then it is some sort of a Ethernet handshake issue.
  While I cannot say that I have tested this between the different versions of 
5x & 6x, I have see Ethernet hand shake issues between different equipment 
(e.g. CCR & Dell Switches... etc).

  You might want to play with the ethernet duplex port settings on both sides, 
i.e. if you are doing a 100FDX on the laptop then do the same 100FDX on the 
MT... or try a combination of Auto on one side (laptop) and 100FDX on the MT.

  Regards.

  Faisal Imtiaz
  Snappy Internet & Telecom
  7266 SW 48 Street
  Miami, FL 33155
  Tel: 305 663 5518 x 232

  Help-desk: (305)663-5518 Option 2 or Email: [email protected]


------------------------------------------------------------------------------

    From: "Ken Hohhof" <[email protected]>
    To: [email protected]
    Sent: Sunday, January 3, 2016 6:11:09 PM
    Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet 
links

    Not a Winbox issue.

    I can connect a laptop with its NIC forced to 100FDX and see ping loss.  I 
also see devices downstream of a 100M interface on this router that I monitor 
for packet loss and starting when this router was changed, the packet loss 
graphs went from essentially zero to around 0.5%.


    From: Josh Luthman
    Sent: Sunday, January 03, 2016 5:03 PM
    To: [email protected]
    Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet 
links

    FYI I use Winbox 2.2.18 100% of the time since 11/3/2011 - maybe try that?


    Josh Luthman
    Office: 937-552-2340
    Direct: 937-552-2343
    1100 Wayne St
    Suite 1337
    Troy, OH 45373

    On Sun, Jan 3, 2016 at 6:01 PM, Ken Hohhof <[email protected]> wrote:

      I get the same results with Winbox 3.0 or Winbox 2.2.13.  Note this 
problem shows up as on other stuff not just Winbox, it's just easy to test with 
Winbox because it shows up easily as disconnects or failure to load plugins.

      Note that I can use Winbox fine through an interface running at gigabit, 
or I can Winbox through this router to another Mikrotik via a 100M interface, 
the stress on the interface seems to be when the packets are originating from 
this router itself and trying to go out a 100M interface.  But I also see low 
level packet loss on normal traffic through the interface, although it doesn't 
show up as drops or errors in the stats.


      -----Original Message----- From: Faisal Imtiaz
      Sent: Sunday, January 03, 2016 4:35 PM 

      To: [email protected]
      Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet 
links

      Are u using the new version of winbox ?
      i.e. ver 3.0 ? there are issues with older version of the Winbox too.

      Faisal Imtiaz
      Snappy Internet & Telecom
      7266 SW 48 Street
      Miami, FL 33155
      Tel: 305 663 5518 x 232

      Help-desk: (305)663-5518 Option 2 or Email: [email protected]

      ----- Original Message -----

        From: "Ken Hohhof" <[email protected]>
        To: [email protected]
        Sent: Sunday, January 3, 2016 4:03:22 PM
        Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet 
links



        I tried multi-queue Ethernet default and it didn't work, even with queue
        size increased to 500 packets.

        5.26 still works fine.  Best way to see problem is to clear Winbox 
cache so
        it has to download plugins.


        -----Original Message-----
        From: Faisal Imtiaz
        Sent: Sunday, January 03, 2016 11:02 AM
        To: [email protected]
        Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M Ethernet
        links

        Don't forget to reboot the unit after making the queue changes.

        Also I would suggest to reach out to Brian Vargas @ Balticnetworks and 
see
        if they have any suggestions and or if they can replicate what you are
        seeing.

        Regards.

        Faisal Imtiaz
        Snappy Internet & Telecom
        7266 SW 48 Street
        Miami, FL 33155
        Tel: 305 663 5518 x 232

        Help-desk: (305)663-5518 Option 2 or Email: [email protected]

        ----- Original Message -----

          From: "Ken Hohhof" <[email protected]>
          To: [email protected]
          Sent: Saturday, January 2, 2016 11:27:45 PM
          Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M 
Ethernet
          links



          I thought about the first part but didn't try it, I'll try it on the 
lab
          router tomorrow.

          No, I don't see anything reported in the stats, as far as they are
          concerned, everything is good.


          -----Original Message-----
          From: Faisal Imtiaz
          Sent: Saturday, January 02, 2016 10:17 PM
          To: [email protected]
          Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M 
Ethernet
          links

          Try something....

          change the interface queue to multi-queue-Ethernet-default
          and increase the queue size packet buffer for it. (it should be mq 
pfifo)

          Do you see errors / packet loss being reported in the stats ?

          Regards.

          Faisal Imtiaz
          Snappy Internet & Telecom
          7266 SW 48 Street
          Miami, FL 33155
          Tel: 305 663 5518 x 232

          Help-desk: (305)663-5518 Option 2 or Email: [email protected]

          ----- Original Message -----

            From: "Ken Hohhof" <[email protected]>
            To: [email protected]
            Sent: Saturday, January 2, 2016 8:09:46 PM
            Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M 
Ethernet
            links



            I downgraded to 6.25 and still saw the problems.

            I don't really want to go back any farther, likely the issue 
started with
            the new kernel and drivers when 6.x first came out.  I figure if I 
can't
            run
            any of the recent versions, I might as well go back to 5.26.  Unless
            someone
            knows of a specific cause and how to fix it.



            -----Original Message-----
            From: Kevin Radunz
            Sent: Friday, January 01, 2016 1:32 PM
            To: [email protected]
            Subject: Re: [AFMUG] Mikrotik x86 and ROS 6.x problems on 100M 
Ethernet
            links

            I think some weard problems started around 6.33. There are posts of
            different topics about things like Winbox and VPN traffic not 
working but
            traffic through the device was fine.  Some thought MTU changes but 
I'm
            not
            sure I saw concrete fixes.  I know earlier versions don't do this.



              I recently upgraded one of those RouterMaxx 1106 routers from 5.2 
to
              6.33.1
              (I actually configured a new router and swapped hardware).  Ever 
since,
              I
              have had performance problems with a couple ports that are 
connected to
              radios with 100M Ethernet ports.  The most obvious symptom is that
              Winbox
              won't stay connected or can't download plugins, but I also see 
pings
              dropped
              even to the directly connected equipment.

              I was a bad boy making multiple changes at once, so I've been 
gradually
              walking them back in the lab on the original router, I upgraded 
it to
              6.33.1
              and the problem appeared.  I dropped back to 6.31 and it was still
              there,
              but when I dropped back to 5.26 everything was fine again.  I 
haven't
              tried
              earlier 6.x versions yet, 6.31 is the oldest x86 version I have 
handy.
              This
              is not a radio problem, I can reproduce it with a directly 
connected
              laptop
              if I force the laptop NIC to 100M FDX.

              Is anyone familiar with this problem?  I can't find anything on 
the
              Mikrotik
              forums.  I guess I can live with 5.26 if I have to, but I'd like 
to know
              what is causing this.  Do I just need to change some configuration
              parameter?  I know 6.x brought out hardware only queues, but I 
think
              that's
              for Routerboards, not x86.  Is there a problem with the Intel NIC
              drivers
              included with 6.x?  Any chance that an earlier or later version 
of 6.x
              will

        >>> work for me?  I see nothing in the change logs about it. 






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