Connecting a NAS with two Ethernet ports

[mbierman]

I'm hoping someone can answer a question for me.

I just got a Synolgy DS412+ which has two 1000BASE-T LAN ports. One port is connected to a Netgear switch (call this LAN1 100BASE-T) and other directly to a Mac (call this LAN2 1000BASE-T). The mac also has wifi which is connected to LAN1. I mounted a volume from the NAS via the IP address of LAN2 to my mac and started a large rsync job. My expectation was that if I accessed that mount all traffic would go through that which is the 1000Gb rather than going via LAN1 which is limited by wifi speed.

LAN 1 is using DHCP assigned by the router. LAN2 uses a different IP and subnet manually assigned: 172.17.1.1 and 172.17.1.2 respectively with 255.255.0.0 as Subnets. No other devices are using this IP range on the LAN.

However, when I go to the Synology's Resource Monitor I can see the traffic is going through the LAN1 port not the LAN2 path which is more direct and 10x faster. In fact little to no traffic is going through LAN2.

What do I need to do to use the 1000BASE-T connect on LAN2?

 

[hairystuff]

you need to manually configure the lan port ip address on both the mac lan port and nas lan2 port:

e.g.

mac
ip address: 10.0.0.11
subnet: 255.255.255.0

nas lan2
ip address: 10.0.0.10
subnet: 255.255.255.0

Also it might be worth letting the lan on the mac connect first then let the wifi connect second.

 

[mbierman]

Thanks! I was close, but you helped me get the rest of the way there. Very cool, thank you.

 

[hairystuff]

not a problem glad I could help