Hi everyone!
I have a new Mikrotik CRS125-24G-1S-2HnD. It has 24 ethernet ports. Except standard config I need to have the ports 23 and 24 in a bridge.
But I found out thorough this bridge goes any data. ( PC A > MK:port23 > MK:port24 > PC B ) .
No PING or other data - only DHCP ( from other DHCP server ) goes through.
Firewall isn´t active. Ping goes from MK router to PC A and PC B, but not with each other.
It´s standard bridge config which I’m using for example on RB493G. ( it’s working there )
I tested it many times ( from totally clear config ) but it is always the same. 
I don’t know if I can make the bridge on two or more ports on switch 1 on this MK model ???
I see in menu switch (CRS125-24G-1S-2HnD) lot of new config possibilities. it is possible here something set up ???
Thank you for advice.
Libor