Swithing Without Master port

I’m using CRS125-24G-1S and i need 3 ports to be master ports for every other port not just 1 master port.
Is this possible in CRS125-24G-1S.
Using simple vlan config does not solve this.

in theory it supports multiple master ports

but i dont understand why you cant do a configuration using only 1 master port (normal behavior)

Can be done, but MIkroTik warns that some functionality will be lost with multiple master ports. Unfortunately they don’t specify what is lost though.

how can i do it?

set all ethernet interfaces without master

then define which ports you use as masters for example to use eth1 and eth6 as master ports

then set eth2 eth3 eth4 eth5 master port= eth1

then set eth7 eth8 eth9 eth10 master port= eth6

This is not what i am trying to do.

I need eth1,eth2,eth3,eth4,eth5 master ports=eth6,eth7,eth8

the setup is
eth1 belongs on vlans 4,5,6 same for eth2,eth3,eth4,eth5
eth6 belongs on vlan 4
eth7 belongs on vlan 5
eth8 belongs on vlan 6
eth6,eth7,eth8 are connected to 3 different switches

Now my full network setup is complicated i cant explain it here.
I need mikrotik to do the example above.
Is it possible?

each eth interface only can have a single master port

http://wiki.mikrotik.com/wiki/Manual:Switch_Chip_Features

http://wiki.mikrotik.com/wiki/Manual:CRS_features

http://wiki.mikrotik.com/wiki/Manual:CRS_examples

yes its possible but multiple master port is not the way to do it the only thing you need is proper configuration of vlans on interfaces, tagged or untagged according to the case

i suggest you to use sfp1 as a master port for all interfaces except eth24, leave eth24 without master and use it to manage the switch that makes easier to make changes without locking out from management using winbox

take in mind master port from switch perspective represents switch CPU and form router perspective represents the router CPU, master port is a symbolic manner to identify and manage link between Router and Switch and the respective configurations to link the layer 2 switch with router to make layer 3 functionality, keep in mind layer 3 is processed by CPU using software that limits layer 3 performance

I have the whole vlan configuration configured fine but it does not work if i set master port to none.
If i set master port automatically the configuration and all the vlans work.
I know i can do this with yet another switch and connect that switch to this on 1 port and set that port as master, but that way im creating a bottle neck limiting to 1 gbps.
The config i have on the Mikrotik should work without setting master ports. Simply by vlan path.

no master port = no switch, set a single unique master port

Ive set master port on eth6 vlan 4 ports 1-5 see vlan 4 but the dont see vlan 5,6 ports eth7,eth8.
Well i guess its not possible sorry for the trouble.

hmm just an idea but i cant test it now.

What will happen…

If i set eth1,2,3,4,5,6,7 master port = eth8
will ports 1 to 5 be able to see vlans on ports eth6 and eth7?
and i will isolate eth6,eth7,eth8 so they cant see each-other?
I must test this.

my friend, master port has not any relationship with vlan behavior

because that i suggest you to use sfp1 as master port for your interfaces to avoid confusion

then via switch vlan menu

create vlans and add tagged and untagged ports to the respective VLAN in VLAN tab, be sure of check SA learning is enabled on each vlan

vlan 1 is the native vlan

set the tagged ports (eth2 eth3 eth4 eth5) to the respective VLAN ID on VLAN tagging tab on egress vlan

set VLAN for untagged ports on ingress vlan translation like this using the corresponding vlan and port like this
vlan.jpg

when you are sure your vlan configuration is ready check this
switch.jpg

:slight_smile: my bad. I feel useless now such a noob mistake.
I was always trying to setup everything without master port.
Thank you.