Backup port

Hello everybody.
I dont`know way, i have problems with mine CRS109-8G-1S Ver6.42.4.

Bidge Port has “backup port” as role
How can I disable the backup, nay idee?

/interface ethernet> print
Flags: X - disabled, R - running, S - slave

NAME MTU MAC-ADDRESS ARP SWITCH

4 RS ;;; Drucker
ether5 1500 E4:8D:8C:9D:E6:B4 enabled switch1
5 ;;; Backup
;;; 2018.06.24-13:48:20: received loop protect packet originated from E4:8D:8C:9D:E6:B4 (ether5)
ether6 1500 E4:8D:8C:9D:E6:B5 disabled switch1

Best regards from Vienna
Herwig

this is due to a loop in your network (bridge), and (r)stp fix this :slight_smile: