edit: the wording should probably be amended in the article i think. It could read something like:
A ‘master’ port will be the port through which the RouterOS will communicate to all ports in the group. Interfaces for which the ‘master’ port is specified (slave interfaces) become switched ports and
all traffic must pass via the specified master port interface to get to RouterOS (CPU)
I added the underlining in the quote above. While the suggested new text is better, it seems to me that my CRS125 switch doesn’t work that way.
If I monitor the stats on the master port while sending traffic from a slave port to ROS for routing to another device on the network, I see no
traffic showing up on the master port.
So what is meant by “all traffic must pass via the specified master port interface to get to RouterOS”?
From my little experiment, it seems that there is nothing special or master-like about the master port. Rather, it appears to me that this
is just a way indicate to the switch chip how ports are to be grouped. Calling one of the grouped ports the “master port” would seem to imply
that plugging an external device into said master port will result in some different behavior than plugging a device into a slave port. I have
been unable to see any difference in behavior between the master port and its slaves.
I wish someone from MikroTik could explain how this is supposed to work in a clear and unambiguous manner.
Normis, I am going to post a link to this thread here:
http://forum.mikrotik.com/t/crs-documentation/73703/1