2 routers 1 home network (help)

[zerosepte]

So I have 2 routers and I want to use both of them in my home network. 1 for on demand services on my cable tv and the other for ethernet usage on my pc. Should they work fine? Because when I connect the router to my cable tv device it doesn't go online. The lamp on "Internet" is always red.

 

[Ralston18]

First be sure that only one router is setup/configured to provide DHCP addresses.

Can you provide some sort of line diagram showing the current connectivity? Make and model routers?

E.g.:

ISP -----> [WAN Port] Main Router [LAN Ports] ---- Ethernet cable ----->[LAN] second router [LAN] port ----Ethernet cable ----> cable TV device.

Other LAN ports on the Main Router would serve home network devices. As could other LAN port on the second router.

Make and model router information is important because you must properly configure the respective router IP addresses correctly.

For example, the Main router is commonly 192.168.1.1 (subnet mask 255.255.255.0, DHCP enabled) and the second router assigned a reserved static IP address of 192.168.1.2 (subnet mask 255.255.255.0, DHCP disabled).

You may need to assign a static IP address to the cable TV device.

Do you have the respective router's User Guides and Manuals? There should be some instruction therein about how to physically connect and configure the devices.

Lots of diagrams and images online as well.

Start by sketching out your network and checking assigned IP addresses (DHCP or Static) for each device. Establish the "big picture" and you will probably spot the problem fairly quickly.

 

[zerosepte]

First be sure that only one router is setup/configured to provide DHCP addresses.

Can you provide some sort of line diagram showing the current connectivity? Make and model routers?

E.g.:

ISP -----> [WAN Port] Main Router [LAN Ports] ---- Ethernet cable ----->[LAN] second router [LAN] port ----Ethernet cable ----> cable TV device.

Other LAN ports on the Main Router would serve home network devices. As could other LAN port on the second router.

Make and model router information is important because you must properly configure the respective router IP addresses correctly.

For example, the Main router is commonly 192.168.1.1 (subnet mask 255.255.255.0, DHCP enabled) and the second router assigned a reserved static IP address of 192.168.1.2 (subnet mask 255.255.255.0, DHCP disabled).

You may need to assign a static IP address to the cable TV device.

Do you have the respective router's User Guides and Manuals? There should be some instruction therein about how to physically connect and configure the devices.

Lots of diagrams and images online as well.

Start by sketching out your network and checking assigned IP addresses (DHCP or Static) for each device. Establish the "big picture" and you will probably spot the problem fairly quickly.

my routers are thomson tg585 v7 and v8
My current network is a router connected to my pc upstairs
My cable tv device is downstairs (ethernet from upstairs is not a solution bcause it's a long long distance) and i want to put there another router.
I dont know a lot about networking so I can't help you a lot with these things! If you can make a picture of how this is gonna work can you send me a link please?

 

[Ralston18]

Key question is are both routers to be on the same network?

If yes, then the routers must be connected. Since an Ethernet (wired) connection appears to be out, then your remaining choices are 1) wireless, and 2) power line adapters.

Wireless is likely to be slow and using power line adapters is very dependent on your home's electrical circuits.

My recommendation is that you do some research and reading to learn more about networking.

The following link should be a good start:

https://www.lifewire.com/home-computer-networks-basics-816351

And you can find many other such links by googling "how to setup a home network tutorial" or similar words and phrases.

Overall there are many factors involved and the more that you understand the more likely you will identify some setup that will meet the requirements.

However, since both routers are Thompson then you should probably try setting up a Wireless Access Point.

https://www.manualslib.com/manual/169133/Thomson-Tg585-V7.html

http://setuprouter.com/router/thomson/tg585v7/manual-1272.pdf

https://community.plus.net/t5/Broadband/Can-I-use-TG585-as-a-wireless-access-point/td-p/870481

https://www.cosmote.gr/fixed/documents/10280/652016/TG585_SetupUserGuide_en_v8.pdf/0878a24f-0922-408c-bd51-fff55a07f53a

Read the manual to understand what you now have.

Then focus on setting up the second router to be a wireless access point. Hopefully you should not need to make any changes to the existing router.

Here is a link that should provide some idea about what needs to be done.

https://www.youtube.com/watch?v=mBK8v1CEom0

Note: I do not recommend downloading the offered configuration file.

There are other similar tutorials and videos available.

How it would probably look:

ISP ----> ADSL splitter -----> Main router (Thompson#!) ,<~~~~wireless~~~~~> Wireless Access Point (Thompson#2) [LAN port] ---Ethernet cable --> Cable TV device.

With, of course, other Ethernet devices plugged in both router's LAN ports as necessary.