It may be worth mentioning the actual issue you are having?Hi,
As you're the first post on here I can see with a RB5009 would you kindly share your config with me.
I've gone through a few different setup posted on here and they don't seem to work properly on my RB5009, perhaps because of the different number and internally configured ethernet ports.
My current router has my Synology DS918+ connected link aggregation 802.3ad so I need to set that up on the Mikrotik too.
Any help would be greatly appreciated!
Unsure what sequence you plugged cables in, however you must ensure you reboot the HUB if any cable configuration has changed i.e. added an extra ethernet cable.