Switch Master Port question

RouterOS General
1

hi,

Ive previously asked a question on how to do intervlan routing without using bridging but I dont want to bump up old threads so i will create a new one. Link below
http://forum.mikrotik.com/t/setting-up-intervlan-routing-on-mikrotik-crs226/89289/1

My device is a CRS226. The setup uses SFP+1 as the master port for the 2 vlans that I will be creating.

port 1 - 6 will be in vlan 20, master port sfp+1
port 1 - 23 will be in vlan 21, master port sfp+1
port 24 will be a routed uplink port, master port none.

Question:

  1. what happens to SFP+1?
  2. Is it still usable? if I plug something in it what would be the expected output?
  3. If it is stil usable where can i use it ?

Ive previously setup my device to use ether1 as a master port to all ports and still place it in as a member of vlan 20. i got really weird results where the CPU usage was high and my switch acted like a HUB where i could see all traffic going out to all ports.

2

The master port is still fully usable just like any other port, but that’s the logical port that RoS will use to do all talking to that group. The switch menu configuration will determine what will be allowed to and from the physical SPF+ port.

There is a bug in the current release that will cause some bogus ‘probable loop’ messages in the logs when you actually plug a device into the master port, but these can be ignored if you’re sure there is no loop and is fixed in the current development RC releases.