RBR50 - AP Mode - Internet vs LAN Port

[ruffruff]

Dear all,

I've got a weird behaviour on my RBK53 (firmware: V2.5.1.16) and hope someone can help to give me advise.

My setup is as follow:

Fibre 1Gbps Broadband > Router: Asus 86U > Orbi

I have Cat6 cable running through the house. RBK53 is on wired backhaul.

RBR50 is in AP mode and connected directly to AsusLAN1 port

1st Satellite: RBS50 is connected directly to Asus LAN2 port

2nd SatelliteL RBS50 is connected directly to Asus LAN3 port

PC is connected directly to RBR50 - LAN port

Synology NAS is connected directly to RBS50 (1st) LAN port

Scenario 1:

On the RBR50 - If i connect the Asus LAN cable into RBR50's Internet port

File transfer speed from PC to NAS can only hit 50mbps max.

Scenario 2:

On the RBR50 - if i connect the Asus LAN cable into RBR50's LAN port

Red glowing light on the RBR50

File transfer speed from PC to NAS can hit 110mbps max.

I would very much use Scenario 1 because of the annoying glowing red light in Scenario 2, but the LAN transfer speed is halved. Also, i get 1 less LAN port to use to the RBR50 ... 

Can anyone help me on the above?

Pardon my english.

Thanks.

Best Regards,

D.T.

[plemans]

Plug your RBS's into the lan port on the RBR. Not into the asus. 

Its should go:

Asus lan cable----->wan port on RBR------->lan cables from RBR---->rbs devices. 

Try that.