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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.

dave
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3 Answers3

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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.

dave
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  • What is "link-local only" and how do you enable it on Windows 11? – rollsch Jul 31 '23 at 01:31
  • @rollsch Try this link (https://www.reddit.com/r/synology/comments/q2vm4u/synology_maping_network_drive_with_windows_11/?rdt=44809), or this one (https://learn.microsoft.com/en-us/answers/questions/715326/i-cant-access-my-synology-nas-dsm-from-windows-11) – dave Aug 05 '23 at 14:28
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As you dont have DCHP option, please check the subnet and IP Range of the Switches. Then set the IP for the synology diskstation manually (search with the App Synology Assistant Windows download Link). Run synology assist from your computer makes sure the NAS is up and running all lights on and the blue light solid. LAN and disk lights should be flashing. It does take a few minutes for the unit to become available the first time. if you see the IP you can just type in the IP and get to you NAS as well without the synology assistant. You will need just the DSM file for your version/ unit. usually xxx.PAT. its that easy . Maybe the extra switch is the problem.

Pat file of your Diskstation: Link

schlumpfpirat
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foxxx
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As others said, it will spend time looking for a DHCP server to allocate an IP, and if it can't it'll eventually(*) default back to a self assigned IP in the 169.254.x.x range.

It takes quite a while to time out, so if you want to set it up without a DHCP server, you need to power it up and wait for 10+ minutes till it times out looking for DHCP responses.

IF you want to set it up without DHCP, you'll want to ensure your computers IP is setup to be able to talk to this range. (eg set your netmask to 0.0.0.0 so all traffic is sent directly, instead of any configured gateway)

thetoolman
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