Explain what a Master/Slave interface is

Hello,

I’m quite new to RouterOS.
My ultimate goal is to configure a 6.43 CRS112 as a gateway to two different ISP.
When trying to configure such setup, I realized I don’t understand some basic notions.

I would be very pleased to get some explanations on them.

What is a slave interface ?
How do you read current master of a slave interface ?
What could be the main reasons to change an interface status from master to slave or the opposite ?

Best regards

As far as I know master/slave interface are no longer used in 6.41+
Or at least you do not need to configure it.

As Jotne said, the master-slave configuration is done as before ., now it goes again from the bridge and automatically configures if the harward offload can be enabled or not.

In my opinion, a slave interface would be an interface that belongs to a bridge and for example you could not use that interface as an wan because it is a slave to the bridge. u should use the bridge as master.
A master interfaces would be any interface free of any other interface ..

ex : if ether 1 its bridge with ether2 with name bridge bridgelan this bridgelan is the master and the ether1 and ether2 are slave interfaces.

ether1 → bridgelan
ether2 → bridgelan
ether3 → WAN

https://wiki.mikrotik.com/wiki/Manual:Switch_Chip_Features#Bridge_Hardware_Offloading
I hope it is useful and sorry for my bad english
Temorizador

Master/Slave relationship used to be when you wanted to switch interfaces on the same switch chip. The master was designated as a “main” interface with all slaves able to switch to it, from itand between each other.
6.41 flipped that on it’s head with the “new” bridge implementation where you add ports to a bridge and activate “Hardware Offload” if you want to switch and hardware level.

So to answer your question: Deprecated.

The CRS112 will do everything you want it to quite well however do bare in mind the CPU is very bottom end (400Mhz single core) so it won’t be a monster traffic pusher. Once you load in a decent firewall you will quickly become dependant on fast track to keep CPU usage down.

If you WAN links are more than 100/100 then I’d recommend getting a dedicated router and switch rather than the CRS112 which is a switch with a “bit” of L3 capability.

I’m currently targeting routing between dual Gigabit WAN links (800/200Mb/s for download/upload on each) and 20 WiFi access point.
Which product withing [1] Mikrotik routers range would fit this ?

[1] https://mikrotik.com/products/group/ethernet-routers

CRS112 is definitely not for you unless you want to start a thread now asking why it won’t route at the correct speeds! With that kind of connectivity I would strongly suggest looking at something like a CCR1009.

I ordered one CCR1009, this morning.
Thanks for this advice.