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Connecting a broadband cable modem to a D-Link DSL-2640T Wireless ADSL Router
Greetings,
I just switched from a DSL Internet broadband subscription to a cable Internet broadband subscription, and previously I used a D-Link DSL-2640T Wireless ADSL Router to allow wireless access to the DSL internet connection. Now that the internet broadband connection is through a cable modem, I wonder if it's possible to connect the cable modem to the D-Link DSL-2640T Wireless ADSL Router to allow wireless access to the cable internet connection?
Wireless router-only devices such as the Linksys WRT54G have an Ethernet WAN or "Internet" RJ-45 port which accepts the Internet (or WAN) connection from (A)DSL or cable modems though Ethernet cable. This Internet connection is then routed either wirelessly or through the router's Ethernet ports (usually 4 ports numbered 1-4).
Combo modem/router devices such as ADSL and cable modem routers, on the other hand, only have ADSL RJ-11 or coaxial cable ports, respectively, to accept Internet/WAN connections. The D-Link DSL-2640T Wireless ADSL Router only has an ADSL RJ-11 port to accept Internet/WAN connections, so there is no Internet or WAN port to connect with the cable modem's Ethernet port. The only ports that the cable modem can connect to are the 4 Ethernet ports of the DSL-2640T. I tried connecting the modem to Port 1 of the DSL-2640T, then set the DSL-2640T's WAN setup type to "Dynamic IP Address" (which is the setting for cable modem connections), but the DSL-2640T didn't pick up the cable modem's IP and DNS addresses after restarting both the cable modem and ADSL router.
I may have missed something or maybe standalone ADSL/cable modems don't work with combo ADSL/cable routers. Any input on this matter is most appreciated.
Regards,
Adri
I just switched from a DSL Internet broadband subscription to a cable Internet broadband subscription, and previously I used a D-Link DSL-2640T Wireless ADSL Router to allow wireless access to the DSL internet connection. Now that the internet broadband connection is through a cable modem, I wonder if it's possible to connect the cable modem to the D-Link DSL-2640T Wireless ADSL Router to allow wireless access to the cable internet connection?
Wireless router-only devices such as the Linksys WRT54G have an Ethernet WAN or "Internet" RJ-45 port which accepts the Internet (or WAN) connection from (A)DSL or cable modems though Ethernet cable. This Internet connection is then routed either wirelessly or through the router's Ethernet ports (usually 4 ports numbered 1-4).
Combo modem/router devices such as ADSL and cable modem routers, on the other hand, only have ADSL RJ-11 or coaxial cable ports, respectively, to accept Internet/WAN connections. The D-Link DSL-2640T Wireless ADSL Router only has an ADSL RJ-11 port to accept Internet/WAN connections, so there is no Internet or WAN port to connect with the cable modem's Ethernet port. The only ports that the cable modem can connect to are the 4 Ethernet ports of the DSL-2640T. I tried connecting the modem to Port 1 of the DSL-2640T, then set the DSL-2640T's WAN setup type to "Dynamic IP Address" (which is the setting for cable modem connections), but the DSL-2640T didn't pick up the cable modem's IP and DNS addresses after restarting both the cable modem and ADSL router.
I may have missed something or maybe standalone ADSL/cable modems don't work with combo ADSL/cable routers. Any input on this matter is most appreciated.
Regards,
Adri
Last Comment
With your computer connected directly to the cable modem...
Open a command window (Start->Run CMD [Enter]), and run
IPCONFIG /ALL
right-click the command window and choose Mark.
Hold down a shift key, then scroll down and to the right to highlight all the output, release the shift key and hit Enter to copy selected to the clipboard.
Right-click in the Comment box below, and choose Paste to transfer the ipconfig output from the clipboard, then click Submit.
Thank you.
Open a command window (Start->Run CMD [Enter]), and run
IPCONFIG /ALL
right-click the command window and choose Mark.
Hold down a shift key, then scroll down and to the right to highlight all the output, release the shift key and hit Enter to copy selected to the clipboard.
Right-click in the Comment box below, and choose Paste to transfer the ipconfig output from the clipboard, then click Submit.
Thank you.
ilauuk said:
>> If this is the case you can simply connect the network cable to the router
As the asker said, the DSL-2640T has an RJ11 jack for the WAN port, not an RJ45 jack.
>> If this is the case you can simply connect the network cable to the router
As the asker said, the DSL-2640T has an RJ11 jack for the WAN port, not an RJ45 jack.
My mistake. As far as I can tell your router won't be compatible, but I'll be interested to see if Darr247 can provide a solution.
ASKER
This is the requested content that Darr247 asked for.
C:\>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : w04mis001h
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : firstmedia.com
Ethernet adapter Local Area Connection (MAIN):
Connection-specific DNS Suffix . : firstmedia.com
Description . . . . . . . . . . . : ULi PCI Fast Ethernet Controller
Physical Address. . . . . . . . . : 00-13-8F-9C-8F-23
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 118.136.25.106
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 118.136.25.1
DHCP Server . . . . . . . . . . . : 10.255.9.112
DNS Servers . . . . . . . . . . . : 202.73.99.8
61.247.0.8
Lease Obtained. . . . . . . . . . : Saturday, December 13, 2008 5:56:56
PM
Lease Expires . . . . . . . . . . : Saturday, December 13, 2008 8:56:56
PM
C:\>
C:\>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : w04mis001h
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : firstmedia.com
Ethernet adapter Local Area Connection (MAIN):
Connection-specific DNS Suffix . : firstmedia.com
Description . . . . . . . . . . . : ULi PCI Fast Ethernet Controller
Physical Address. . . . . . . . . : 00-13-8F-9C-8F-23
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 118.136.25.106
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 118.136.25.1
DHCP Server . . . . . . . . . . . : 10.255.9.112
DNS Servers . . . . . . . . . . . : 202.73.99.8
61.247.0.8
Lease Obtained. . . . . . . . . . : Saturday, December 13, 2008 5:56:56
PM
Lease Expires . . . . . . . . . . : Saturday, December 13, 2008 8:56:56
PM
C:\>
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ASKER
This is the modem that used for cable connection :
Scientific Atalanta EPC2100R2
Scientific Atalanta EPC2100R2
I have not found a manual for the EPC2100R2, but you could try setting a static IP of 192.168.100.10 on the computer connected to it and connecting to 192.168.100.1 to see if you can bring up the menus in the Webstar modem.
ASKER
Hello Darr247, I think I agree with you that this modem could'not use for cable. I will close this question and thank you verymuch for your help.
ASKER
Thanks for the info and help. I'll agree with you.
Routers
A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.
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I imagine that your cable internet service came with a cable modem which can be connected to a computer with a standard network cable.
If this is the case you can simply connect the network cable to the router and configure the router appropriately with the settings from the isp,.You'll probably just need to tell the router to accept a cable connection, so it doesn't feel the need to "dial up" like it would with a dsl connection. But your ISP can let you know the exact settings required.
Let me know how it goes.