I am new to Mikrotik, so please excuse me for a question that may be basic.
On a 750GR3, with version 7.12.1, configure Ether4 and Ether5 on the Bridge and assign DHCP Serve on the Bridge. Please note that most machines receive a 100Mb connection and not 1Gb (both on Ether4 and Ether5).
The interfaces were configured to not have Auto-Negotiation and were fixed to 1 Gb, they do not connect to a PC.
However, the Bridge has been removed, as Ether 4 or Ether5 interfaces connect normally in 1 Gb with Auto-Negotiation.
The Wan input, which is on Ether2, is set to Auto-Negotiation and set to 1GB, it also does not connect to the Modem…but with Auto-Negotiation checked, it connects normally to 1 GB
Switch to Ether4, Ether5 or Ether 2, when set to 1 Gb, or the LED does not turn green, and does not connect the devices.
Is this normal? Is a feature? Is it a bug?
There are some items that I didn’t really understand, but it seems that I need to activate the internal switch, and that’s it? How do you do this? What’s the difference?
1.-3. In vast majority of cases, it’s best to leave autonegotiation enabled. If both sides are set to autonegotiate and they both support 1Gbps, but link is not negotiated at that speed, it mostly means some faults on used wires (too long wires, low quality wires, incorrectly done connectors).
How do you check the negotiated speed?
If the config is more or less basic, then you don’t have to do anything.
I can check the speed through the status of the Network adapter in Windows, and through the Interface Status in Mikrotik itself (2 clicks on interface/status/rate).
I imagined the hypothesis of cables, but why would I connect 1G without a Bridge, and 100 Mb when it is in Bridge? The cable is the same - I don’t think it is…1 meter cable.
It is better to leave it in auto-negotiate on both sides: for 10 and 100Mb/s you would end in half-duplex and most of the time with more errors than frames. But the most important is that if you disable auto-negotiate on any side, you also disable the MDI-X, the detection of cross/non-cross connection. That is likely why your ISP modem doesn’t connect when you set the MT side.
If you want to check, get a crossed cable, set the auto-negotiate to off, and your modem should still connect.
Dear all, let me try to explain it differently.
The biggest question is why it doesn’t connect to 1 Gb when bridged on ether4 and ether5. Everything else, apart from auto-negotiation for example, everything else is just for testing since in Bridge there was no way to automatically connect to 1 Gb - nor manually to 1 Gb - it was only possible to connect to 100Mb (manual or automatic) , and that is the question.
The big question is whether the behavior is a bug or a feature, or something else that I need to configure in addition to the Bridge, like a switch inside the 750Gr3 for example.
thanks.
Post full config (less sensitive stuff, such as serial number, any password and public IP address). Execute /export hide-sensitive file=anynameyouwish from terminal window, fetch resulting file to management PC, open it with text editor and (after obfuscating sensitive data) copy-paste it into [__code] [/code] environment (the sign in the button bar of post editor window).
Issue the following commands: “/interface/ethernet/print detail”, “/interface/ethernet/print stats-detail”, and “/interface/ethernet/monitor ether5 once”.
Disconnect ether5.
Put ether5 in the bridge
Connect ether5.
Wait 2-3 seconds
Issue the following commands: “/interface/ethernet/print detail”, “/interface/ethernet/print stats-detail”, and “/interface/ethernet/monitor ether5 once”.
… and post all outputs here.
For the modem, that’s very likely normal: I suspect a cross-cable is required between your modem and the mikrotik. You can try if you have one around.
My dears, thank you!
I was getting ready to export the configuration file, and for that I implemented the Bridge again (Ether4 and Ether5). But this time, things worked as they should!
I believe there must be something strange happening on my PC’s network card and not on the Mikrotik. I restarted it (PC) these days, and now everything is fine, connecting to 1 Gb - it doesn’t matter in Bridge or not, always in Autonegotiation. So no need to attach the Mikrotik settings here, thank you all very much.
That’s presumptive. You might be having the same symptom but by a different cause. Atop that, you’re already telling us that the above solutions didn’t work for you, right? I mean, you did try everything listed above, yes? Therefore, how can your problem be “the same” if the solutions don’t work?
pls help further advice if u may have.
Tell us what you’ve tried, what your configuration is, what the devices in question are, etc. If you have indeed tried everything above, we need more details to proceed.