Hi, I have a CCR1016-12S-1S+

I have a problem after uppgrading to anything above 6.34.3

It won't let me connect via eth1 via a S-RJ01

When I setup my internet Connection under Quick Set

Mode: Router

Address Acquisition: doesn't matter what i select.

Port: eth1,
but when I select eth1 and press Apply it change it to SFP1

I tried to reset config and tried to restore config, but nothing sems to work.
I tried via console (serial), after I type in eth1 in Setup, it changed to SFP1.

The LED for the port sfp1 (with S-RJ01) blinks as is has activity.

It works when I downgrade to 6.34.3

Anyone know what is cause and how to fix it?

Maybe incorrect value for mtu or l2mtu?
Did you try 6.35.1 as well?

Maybe incorrect value for mtu or l2mtu?
Did you try 6.35.1 as well?

I will check if the mtu or l2mtu value changes between 3.64.3 and anything above.

Yes, tried 6.35.1 even tried 6.36rc10

Set mtu to 1500 in the old version, maybe l2mtu 1600 or so, then try the upgrade.
After the upgrade you can try jumbo settings again if you wish.

Set mtu to 1500 in the old version, maybe l2mtu 1600 or so, then try the upgrade.
After the upgrade you can try jumbo settings again if you wish.

Don't work. I can't select eth1 it revert back to sfp1 when i press apply.

What I can se now that "status" for SFP1 is slave.

Can it be that I can't use S-RJ01 for internet connection via copper-cable?

Well you did not do what I recommended. MTU 1500 L2 MTU 1600. Try it.

Well you did not do what I recommended. MTU 1500 L2 MTU 1600. Try it.

Sorry read it wrong.

Trying it now.

Well you did not do what I recommended. MTU 1500 L2 MTU 1600. Try it.

Sorry read it wrong.

Trying it now.

Nope, don't work.

Something else I found was under IP/ DHCP Client
after I upgraded:

it replaced settings from
Interface: sfp1

to

Interface: sfpplus1

When I change it back/add/remove, it add another Client to the list (sfpplus1), after next reboot.

Probably it is best to reset the entire thing to defaults and then upgrade it and put the settings in one by one,
or even netinstall it with reset to defaults.
There must be something that is set in such a way that it crashes when upgrading, a known problem is/was the L2 MTU
being too large (I think the max is 10220) but maybe in your case it is something else.
Of course there will be no problem when it boots without settings.

Probably it is best to reset the entire thing to defaults and then upgrade it and put the settings in one by one,
or even netinstall it with reset to defaults.
There must be something that is set in such a way that it crashes when upgrading, a known problem is/was the L2 MTU
being too large (I think the max is 10220) but maybe in your case it is something else.
Of course there will be no problem when it boots without settings.

I tried that but it didn't work.

When I start config after reset via netinstall.
I notice that under DHCP Client.
It was setup to get IP from sfpplus1 (port, that i don't use)

When I remove/disable the router will recreate/enable it again by itself, as soon as I (under, Quick Set) set:
Port: Eth1

Address Auquisition to: Automatic

Or reboot the router.


It happens even if I disable the port under "Interface List"
the router still create/re enable sfpplus1 under DHCP Client and trying to acquire ip from a port
that I either disable or have nothing connected to.

i connect to the internet via ethernet socket in the wall, but no I cant connect directly to the wall socket
from my router via S-RJ01, I must have a switch in between the socket and the router otherwise the router don't
show any connection.

But I can connect a laptop directly to the socket without any problems

I suggest that you get in direct contact with support@mikrotik.com
When a router that has been reset to defaults still does not work, there must be something wrong.

I suggest that you get in direct contact with support@mikrotik.com
When a router that has been reset to defaults still does not work, there must be something wrong.

I will do that.

thx for the help.

I'm facing the very same Problem wir my CCR-1016.
Same fimware, same hadware, same module, ...
Is there any solution?

I'm facing the very same Problem wir my CCR-1016.
Same fimware, same hadware, same module, ...
Is there any solution?

Hi,

I have contacted Mikrotik support, but i haven't got any reply yet and that is almost 2 weeks ago.