Synology NAS Default IP Address

Question

My work recently purchased a Synology DS3617xs NAS. How do I find the default IP of the NAS so I can do the initial setup?

• For security, we're running on a closed system - no internet
• Running RHEL 7.4, so the Synology Assistant won't work (Win /Mac /Debian only)
• We have two switches but no routers, so no DHCP

From the documentation it seems you need either an internet connection or DHCP for automatic IP assignment (where you can then find the IP from your router).

Any help is greatly appreciated.

Answer 1

I figured out a work-around.

I connected the NAS directly to my workstation using another LAN port I have installed on my workstation. I set the IPv4 connection for this port as Link-Local Only. When the LAN port identified its IP address, I used nmap to search the network to find other IP addresses. Since the only other item on this connection was the Synology, I was able to figure out the IP.

Answer 2

Try connect directly server NIC <-> NAS NIC and wait for both devices to self-assign an IP address in 169.254.0.0/16.

Then:

ping synologynas.local

Result:

PING synologynas.local (169.254.254.112): 56 data bytes
Request timeout for icmp_seq 0
64 bytes from 169.254.254.112: icmp_seq=1 ttl=64 time=0.812 ms
64 bytes from 169.254.254.112: icmp_seq=2 ttl=64 time=0.958 ms

The IP address is revealed.

Alternatively visit http://synologynas.local in a web browser.

This worked for me using a Mac, running SynologyAssistant that could not find the NAS.