I am a new mikrotik user. thanks for any help.
Start with a reset
System->Reset configuration->No default configuration
Reboot
Create a Bridge
Bridge->Bridge->±>OK
/interface bridge
add fast-forward=no name=bridge1
Add all ports to that bridge.
Bridge->Port->±>Ethernet1/Bridge1
Bridge->Port->±>Ethernet2/Bridge1
Bridge->Port->±>Ethernet3/Bridge1
Bridge->Port->±>Ethernet4/Bridge1
Bridge->Port->±>Wan1/Bridge1
/interface bridge port
add bridge=bridge1 interface=ether1
add bridge=bridge1 interface=ether2
add bridge=bridge1 interface=ether3
add bridge=bridge1 interface=ether4
add bridge=bridge1 interface=wlan1
If you like the switch to get an IP
IP->DHCP Client->±>Interface:Bridge1->OK
/ip dhcp-client
add dhcp-options=hostname,clientid disabled=no interface=bridge1
This is how it looks like.

Hi @Jotne,
Thanks alot @Jotne, It is working now. Could you help me for another link: http://forum.mikrotik.com/t/could-anyone-help-me-to-configure-untagged-vlan-with-trunk/122960/1
Sent from my PLE-701L using Tapatalk
I just answer your other post.
PS no need to quote post above you, click post reply under the post.