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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