Router issue-ADSL Router on Cable Internet Modem

[MyHelp]

Hi All,
I have taken help from forums across internet and finally got my cable Modem connected to my DSL router (Dlink - DSL-2750U) using port 1 and port 2 for modem and pc respectively. With my wired connection I get 50 Mbps speed. But unable to get the router wifi setup so that my other laptops and phones could get connected.
With my local Area connection active, on enabling the Wireless Network Connection, I find wifi is connected and secured. But the phones or laptops connections keep on connecting.
On disabling "Local area connection", the wifi says "No internet access".

I have the DHCP server disabled from my router page (192.168.1.1-->Advanced Setup-->Lan-->"Disable DHCP Server").

I would appreciate if someone could help me understand how to get the Wifi up and running.
Thanks.

 

[DelJo63]

Let's verify the modem has router services first, connect the pc directly to the modem and then use command prompt to enter

• ipconfig

should be something like
Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : xxx.yyy.zzz
IPv4 Address. . . . . . . . . . . : 192.168.0.5
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.1

The Default Gateway is the modem router location in this example & IPv4 Address is the pc

 

[MyHelp]

Hi Jobeard, Thanks for responding.
I have checked the ipconfig and its as below
Connection-specific DNS Suffix . : <Blank>
Link-local IPv6 Address . . . . . : Alpha numeric number
IPv4 Address. . . . . . . . . . . : 116.75.26.152
Subnet Mask . . . . . . . . . . . : 255.255.192.0
Default Gateway . . . . . . . . . : 116.75.0.1

 

[MyHelp]

And the ipconfig is the same when I connect the modem to my DSL Router (Port 1) and PC to Router (Port 2).
Link-local IPv6 Address . . . . . : Alpha numeric number
IPv4 Address. . . . . . . . . . . : 116.75.26.152
Subnet Mask . . . . . . . . . . . : 255.255.192.0
Default Gateway . . . . . . . . . : 116.75.0.1

 

[DelJo63]

There are two tests:

1. isp=== modem === PC
2. isp=== modem ===router===pc

let's prove (1) first: report the results of that setup and the output of IPCONFIG

lash up (2) and report ipconfig results again

 

[MyHelp]

Below are results of both tests

Test1 --> ISP ===Modem===PC


Windows IP Configuration

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :

Link-local IPv6 Address . . . . . : fe80::7528:994e:7abc:9d0%18

IPv4 Address. . . . . . . . . . . : 116.75.2.231

Subnet Mask . . . . . . . . . . . : 255.255.192.0

Default Gateway . . . . . . . . . : 116.75.0.1


Tunnel adapter 6TO4 Adapter:

Connection-specific DNS Suffix . :

IPv6 Address. . . . . . . . . . . : 2002:744b:2e7::744b:2e7

Default Gateway . . . . . . . . . : 2002:c058:6301::1

2002:c058:6301::c058:6301


Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :

IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6abd:14da:26d8:8bb4:fd18

Link-local IPv6 Address . . . . . : fe80::14da:26d8:8bb4:fd18%22

Default Gateway . . . . . . . . . :

Tunnel adapter isatap.{B0DD6E24-534A-401F-9CFB-3AACC1977E69}:

Media State . . . . . . . . . . . : Media disconnected

Connection-specific DNS Suffix . :




Test2 --> ISP ===Modem===Router===PC


Windows IP Configuration

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :

Link-local IPv6 Address . . . . . : fe80::7528:994e:7abc:9d0%18

IPv4 Address. . . . . . . . . . . : 116.75.2.231

Subnet Mask . . . . . . . . . . . : 255.255.192.0

Default Gateway . . . . . . . . . : 116.75.0.1


Tunnel adapter 6TO4 Adapter:

Connection-specific DNS Suffix . :

IPv6 Address. . . . . . . . . . . : 2002:744b:2e7::744b:2e7

Default Gateway . . . . . . . . . : 2002:c058:6301::1

2002:c058:6301::c058:6301

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :

IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6abd:14da:26d8:8bb4:fd18

Link-local IPv6 Address . . . . . : fe80::14da:26d8:8bb4:fd18%22

Default Gateway . . . . . . . . . :

Tunnel adapter isatap.{B0DD6E24-534A-401F-9CFB-3AACC1977E69}:

Media State . . . . . . . . . . . : Media disconnected

Connection-specific DNS Suffix . :

 

[DelJo63]

Good; this proves the route DHCP is disabled and all assignments are coming from the modem.

I find wifi is connected and secured. But the phones or laptops connections keep on connecting.

Guess you're saying the wifi works too.

laptops connections keep on connecting

does this mean they connect, drop and then reconnect?

On disabling "Local area connection", the wifi says "No internet access".

This would be normal as the router provides the WIFI, but the router needs to be active to forward to the modem.

 

[MyHelp]

I can find the Wifi but on entering the password on my android phone, I get "Obtaining IP address from ...." msg, then it shows Scanning and then again "Obtaining...."
On Iphone, I see a wheel on the left of the the router wifi name and have no internet. I.e. it keeps on attempting to connect unsuccessfully.

In short Wifi though visible, I am not able to connect devices.

 

[DelJo63]

Ok, sounds like the router has WiFi issues. Reboot it by power off for at least 30 seconds.

Also disconnect router---pc and THEN attempt isp==modem===router - - wifi - - to the PC.

 

[MyHelp]

Well I did follow the below steps
1. Turned off the power to the router.
2. Disconnected the PC from the router (port2) cable
3. Then attempted connecting the PC via router with ISP==Modem==Router connection
I get "No Internet, Secured" under Wireless Network Connection of the PC.
The ipconfig details are below
Windows IP Configuration


Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Wireless LAN adapter Local Area Connection* 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Wireless LAN adapter Local Area Connection* 5:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::c173:eefa:1116:f416%25
Autoconfiguration IPv4 Address. . : 169.254.244.22
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :

Tunnel adapter isatap.{D78FAE90-0834-41EF-84A0-6805846839A6}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

 

[DelJo63]

I'm reaching the conclusion that the router

• needs a firmware update (if available)
• or to just be replaced.

You've done everything correctly and this setup has been used by many, including myself.

 

[MyHelp]

Ok. Thanks for putting time on this issue. I will first try the Firmware update and if it doesn't work, will buy a new one.