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[skaffen]

Hi,
due to bad DSL performance I have migrated from an ASUS DSL-modem&router to D-LINK DSL-2750U (updated firmware to ME_1.03).

Wifi is working fine and DSL performance has improved (yeah!). But: I cannot reach my Synology Diskstation file server connected on the Ethernet ports. It´s set up for DHCP and I have reset the network settings etc. on the Diskstation - all without success.  And if i go back to the Asus router I can immediately connect again so it´s a clearn router issue.

It appears as if the device connected on the Ethernet port is completely invisible, can´t ping, can´t connect via webinterface, can´t find via the Synology installation assistant that scans the network. I´ve downloaded and installed 2 network scanners on my Mac -> diskstation doesn´t show up...

Strangely enough: the diskstation appears in the list of DHCP clients (Status / DHCP Clients) and gets assigned an IP address! I have also tried to give it a fixed one, no success. Router LED shows green light for connection and also Diskstation LAN status is green.

Setup / Network / "Configure the second IP Address and Subnet Mask for LAN" is disabled (was enabled by default, thought I had it but no success either)

Any help appreciated, I really need that file server and would hate to go back to my crappy Asus DSL connection

[FurryNutz]

Link>Welcome!

• What Hardware version is your modem? Look at the sticker under modem.
• What region are you located?

Is there any Samba or Storage features that need to be enabled on the modem?
http://forums.dlink.com/index.php?topic=62355.0

[skaffen]

Hardware: V1
Region: India
no samba services on the modem required, that's what I have the fileserver for 

[FurryNutz]

How about try a external network switch to connect this Diskstation to then connect your PC and the Modems LAN port to the switch...

[skaffen]

Back from a business trip, put an old netgear switch in between - no success

[FurryNutz]

I recommend that you phone contact the Mfr of this "Diskstation" and ask for help and information on the configuration and support of this unit...

Seems like there many a configuration issue here...

Back from a business trip, put an old netgear switch in between - no success

[skaffen]

It´s clearly a router and not a server issue - but I solved it with a crutch:

Wireless connection anything -> D-Link Router -> Synology Diskstation   doesn´t work
Wired connection PC -> D-Link Router -> Synology Diskstation    ah! it works!!!

I used this connection to set up a wireless dongle on the diskstation and join the router's wireless network once I had a connection running.

Now I can connect from wireless to diskstation wireless but not wireless <->wired interfaces.

So it seems the router blocks connections between the wired ports and the wifi, even though they are on the same network settings.

Any idea where I can change that? I have not found any corresponding settings in the router interface.

[FurryNutz]

Is there any feature like WLAN Partition on this modem? This could be one thing that could prevent a connection between wireless clients...

Maybe set up a static IP address out side the modems default DHCP IP address pool ON the device, and not a reserved IP address.

[skaffen]

WLAN partition was the key word to google for:

http://superuser.com/questions/495067/combine-wlan-with-lan

You have to disable MultiAP Isolation in the settings which was enabled by default and without further explanation / without even appearing in the router help files (which I had checked...).

[FurryNutz]

So did this do the trick and fix your problem?