Synology NAS: Configure Static IP Addresses, Link Aggregation

As mentioned in early article on Jumbo frame, I bought a Synology Diskstation 1513+ NAS server and really like it. The NAS server comes with very rich features that I have just explored partially. One of my favorite features is its GUI which is Web based but feels like a desktop using the Ext Javascript framework. Besides basic functionalities, it also has appstore kind of extensibility. For example, you can install cloud storage to have your own dropbox without exposing your data on public cloud. I haven’t got time to explore all these yet, but will try them later.

When I first configured the NAS, I just plugged it directly to my computer. It got an IP address which I don’t remember exactly. After configuring it, I moved it to my home lab with other computers and hooked it up to a Gigabit switch. It was then assigned via DHCP a few IP addresses, each of which maps to one of its 4 ports.

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But I had no idea what IPs it was assigned except they are all on the same subnet, so I decided to try the URL I used for initial setup:

http://find.synology.com

To my surprise, it came up as an empty page. After a little search on the Web, I learned that the URL is for initial setup and only for initial setup. Once the initial setup is done, it won’t find Synology NAS. It’s by design.

Now, I had to go back to my router which has a built-in DHCP server. From there, I found out the IP addresses for the NAS without any trouble as the name I set up for the NAS showed up in the list.

After the IP is discovered, the URL to the DSM is as follows:

http://<ip>:5000

which then gets redirected to: http://:5000/webman/index.cgi

Then, I had to figure out how to set up a static IP address. Having a floating IP address for a NAS server is definitely not a good idea.

Configuring static IP address is not difficult at all. After logging into the system, click on the Control Panel and then system section open the “Network.” In the “Control Panel – Network” window, select the “Network Interface” tab. Within the tab, you would see a list of ports on the left side, click on any of them and change radio button to “Use manual configuration” and enter static IP address there. There are advanced features like enabling jumbo frame with MTU of 2000, 3000, all the way to 9000, changing VLAN ID, etc. Once the IP is changed, the URL is automatically changed to reflect the change. So you don’t miss the current connection.

Normally, you can assign a different static IP address for each port, but you can also aggregate multiple ports together with single IP address. For this to work fully, your switch needs to support IEEE 802.3ad standard. Otherwise, two ports can work only as backup to each other under a same IP address.

I found out my switch does not support the standard, so I got an error message “Failed to establish IEEE 802.3ad connection.” As a software person, I now know one more thing to consider while shopping for my next switch. :)

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One Comment

  1. Posted March 27, 2014 at 1:22 am | Permalink

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