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wildbill442
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Re: RB2011UAS-RM - auto negotiation problem

Mon Nov 25, 2013 9:41 pm

This problem still exists on the RB9xx series equipment.

http://forum.mikrotik.com/viewtopic.php?f=3&t=79260
 
CHARL13
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Re: RB2011UAS-RM - auto negotiation problem

Thu Nov 28, 2013 12:04 pm

However they will not work properly with the ECI. They end up with 10Mbps full duplex
Ah that's not good. Just my luck to have an ECI modem. So I guess my option is to replace the modem or sack off the RB951 all together.
 
CHARL13
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Re: RB2011UAS-RM - auto negotiation problem

Sun Dec 08, 2013 8:40 pm

I've had a bit of a brain wave. I don't want to power 3 devices so I've been looking at PoE capable 100mb switches to kill 2 birds with 1 stone as it were; make the RB connect to the ECI modem at 100mb and power the RB without an additional plug.
That got me thinking, would one of these achieve the same?

http://routerboard.com/RBPOE
Or
http://routerboard.com/RBGPOE

As loathed as I am to buy another Mikrotik product, at a couple of quid it would be much cheaper than a PoE switch.
 
sumpbuster
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Re: RB2011UAS-RM - auto negotiation problem

Thu Jun 12, 2014 12:57 am

Just received this from Mikrotik support:
Hello,

Recently, the RB2011 and RB951G Gigabit port connection has been tested with this
particular device and a hardware related incompatibly was found.
This problem is addressed and fixed for all new RB2011 and RB951G, unfortunately,
it is not possible for old ones.
Sorry for inconvenience this have caused.

Regards,
Janis Becs
So I guess that's that.
(Bit of an old thread - but)
Anyone know how to determine the hardware "new versions" of the RB/2011UAS-2HnD-IN ?

I've just fallen into this one - the BT Openreach modem and the Mikrotik bouncing around and negiotiating 10mbit on the gig ports.

So I reconfigured to use ether10 (10/100) without issue.

Bit of a pain when the pppoe wizard doesn't automatically add a "input drop" for the pppoe-out1 device tho - leaves the whole thing open to the internet!
 
learath
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Re: RB2011UAS-RM - auto negotiation problem

Mon Jul 14, 2014 10:06 pm

Just received this from Mikrotik support:
Hello,

Recently, the RB2011 and RB951G Gigabit port connection has been tested with this
particular device and a hardware related incompatibly was found.
This problem is addressed and fixed for all new RB2011 and RB951G, unfortunately,
it is not possible for old ones.
Sorry for inconvenience this have caused.

Regards,
Janis Becs
So I guess that's that.
(Bit of an old thread - but)
Anyone know how to determine the hardware "new versions" of the RB/2011UAS-2HnD-IN ?

I've just fallen into this one - the BT Openreach modem and the Mikrotik bouncing around and negiotiating 10mbit on the gig ports.

So I reconfigured to use ether10 (10/100) without issue.

Bit of a pain when the pppoe wizard doesn't automatically add a "input drop" for the pppoe-out1 device tho - leaves the whole thing open to the internet!
I would also love to know this. I've got a RB2011UiAS-RM that Mikrotik was unwilling to replace which will not autonegotiate with all of my devices, and I've been holding off replacing it because I have no way to tell if a new one will be fixed or not.
 
HiddenVision
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Re: RB2011UAS-RM - auto negotiation problem

Thu Jun 11, 2015 9:20 pm

Just a quick one.

We had the same issue with Mikrotek routers and BT ICS modems.

Our fix was to set the ICS modem to a fixed bitrate and full duplex.

Now they connect at 100M via eth1 on the router.

Hv.
 
vortex
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Re: RB2011UAS-RM - auto negotiation problem

Thu Sep 10, 2015 10:38 pm

I had to move my Samsung SUHD TV from switch 2 to switch 1 to be in the same subnet as my phone without a bridge, and I cannot get it to DHCP even if I disable 1000Mbps on the RB2011 port, like I had to do on switch 2 successfully.
 
vortex
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Re: RB2011UAS-RM - auto negotiation problem

Thu Sep 10, 2015 11:58 pm

No good, attempting the move to switch1 resulted in total TV networking failure when putting it back in switch2.

I had to factory reset the TV, find out how to pair the smart remote again, and reconfigure the whole TV setup again.
 
vortex
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Re: RB2011UAS-RM - auto negotiation problem

Fri Sep 11, 2015 11:09 pm

The link appears established and it seems a lease is being offered but not being taken by the TV.

The weird thing is that this problem happens only on switch1, even without master port.

It also does not connect if I use static settings.
 
infused
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Re: RB2011UAS-RM - auto negotiation problem

Tue May 24, 2016 6:57 am

Was this ever resolved, or did Mikrotik shove it in the too hard basket?

We have this on 2x RB2011-RM's. Both switch groups flapping.

Actually, read up and see it was a hardware fault. So how do I tell what version of the 2011 it is?
 
dude2k
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Re: RB2011UAS-RM - auto negotiation problem

Tue Nov 29, 2016 11:37 am

+1
Same Problem here with RB3011 and v6.37.2
Have a VDSL2 50/10 with Draytek Vigor 130 as DSL Modem

- If I use Auto-Neg it says 1G but I only get about ~30Mbit/s or less from WAN
- If I set it to 100M Full I get about 48-50 Mbit/s

I've also a very strange behavior with Netflix because the website itself is working, but the steam does not. Doesn't matter if I use the website or the iPhone app....

Update Netflix:
Seems, that I might have a problem with fragmentation. If I reduce my MTU on my Windows 10 client from 1500 to 1451 it works fine.

Constellation:
((DSL Modem - MTU1500)) -> VDSL VLAN7 -> ((MTU1500 - Mikrotik RB3011 - MTU1500)) -> ((MTU1451 Client))
 
michelletaylor
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Re: RB2011UAS-RM - auto negotiation problem

Fri Feb 26, 2021 6:59 am

Have you solved the issue yet? Because I am having the same kind of issue
 
billybom
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Re: RB2011UAS-RM - auto negotiation problem

Sat Sep 02, 2023 9:18 am

2023... ROS 7.11.2, latest 6.49.8, 6.49.10, 6.48, 6.28
rb2011uias-2hnd-in that was bought 3 (? don't remember) years ago.
10/Full with a ton of RX Dribble bit errors on a device when autonegotiation is on, ton of linkdowns, dhcp receives request from device, sending offer but no luck. So device ever get an IP by cable (by wifi is ok) and can't be used. Very short 1Gbit cables tested, all ports tested - works with other devices ok. But not that particular one. Device is 100% ok, because it succesfully autonegotiates as 100/Full with other non MT routers.
It' a pain in the back middle part of the body.
Raised support ticket but "it's physical connection problem, not MT, issue closed". Damn.

As someone said there that his device works only at ether10: I've tested previously just ethers from 2 to 6 without luck and stopped changing ports, because all was identical. But now I've inserted it in ether10 and what? It started to work at 100/Full as a lightning. It started to work at all! What a?..
Last edited by billybom on Sat Sep 02, 2023 11:52 am, edited 1 time in total.

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