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The Graveyard - Products No Longer Supported => Access Points / Extenders => DAP-1522 => Topic started by: HRS2403 on August 16, 2015, 08:59:56 PM

Title: DAP-1520 won't pass DHCP-generated IP address to some (but not all) client types
Post by: HRS2403 on August 16, 2015, 08:59:56 PM

This is regarding a DAP-1520, hardware version A1, firmware 1.06.

In brief, I have various clients getting wi-fi from my wireless router (a Linksys WRT160N, running DD-WRT). No problems; utterly stable; months between router reboots. My only problem is that my house's construction is so "traditional" that it attenuates the wi-fi signal in certain areas.

So, I got the DAP-1520 at Costco the other day. I have to say it works extremely well at extending the signal to the under-served areas.

Just one problem--my Windows 8.1 and Windows 7 PCs' network cards (two different brands) can't get a DHCP address from the router when going through the DAP-1520. These same PCs had/have no problem getting a DHCP address directly from the router. But, other client types--a MacBook Pro, several iPads, plus Androids phones--have no problem getting a DHCP-issued IP address.

For what it's worth, the PCs have only 2.4 GHz cards, so I can't check if the problem is also on the 5 GHz side for the PCs. But, at least one of the other devices that do not have the DHCP problem connects via the 2.4 GHz side.

So, for the PCs, I have to manually configure their network addresses. Not the end of the world, but the DAP-1520 should supply their addresses just as for the other devices.

Any clues?

Title: Re: DAP-1520 won't pass DHCP-generated IP address to some (but not all) client types
Post by: FurryNutz on August 17, 2015, 07:48:46 AM

Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

• What region are you located?

Wireless Configurations
Links>Wireless Installation Considerations (http://forums.dlink.com/index.php?topic=48327.0) and Managing Signal Congestion (http://forums.dlink.com/index.php?topic=53228.0) and Good Neighbour Policy (http://forums.dlink.com/index.php?topic=10634.0)

• Ensure the default (dlink) SSID name is changed. Ensure that different SSID names are used between each WiFi 2.4/5Ghz radios. Can be anything and not something that's already in use by any neighbouring WiFi routers. Under Setup/Wireless/Manual.
• What wireless modes are you using on the main host router?

What mode is the DAP running in? Extender or bridge?
Clear out any wireless profiles on the problem devices and set up new profiles to connect to the SSID names.

• 2.4Ghz Routers only: Try single mode G or N or mixed G and N?
• 2.4Ghz and 5Ghz routers: Try single mode G or N or mixed G and N on 2.4Ghz and single mode N or AC on 5Ghz?
• Channel Width set for Auto 20/40Mhz or try 20Mhz only.
• Try setting a manual Channel (http://en.wikipedia.org/wiki/Wireless_channels) to a open or unused channel. 1, 6 or 11. 11 for single mode N if the channel is clear. 13 for EU regions. Try channel 48 or 149 on 5Ghz.
• What security mode are you using? Preferred security is WPA-Personal. WPA2/AES Only. Some WiFi adapters don't support AES (http://en.wikipedia.org/wiki/Advanced_Encryption_Standard), so you might want to try TPIK (http://en.wikipedia.org/wiki/Temporal_Key_Integrity_Protocol) only or Auto TPIK and AES.

As a test, disable the WPA on the main host router and reconnect the DAP to the main host router on a open SSID. Then test the connection with the problem devices...Do they connect on a open connection? Re-enable WPA2 on the host router and reconnect the DAP.

• What wireless devices do you have connected?
• Ensure any devices with WiFi adapter drivers are updated.

What mfr and model # adapter cards are in the devices that don't seem to connect correctly?