need external IP behind router: mac passthrough?

[vinny9561]

Hello everyone,


I have a digital tv in my network which requires an external IP directly from the ISP's DHCP server. However I want this TV to come BEHIND my router , but the router should not give it an IP but 'pass it through'. Anyone knows if something exists to obtain this?

Current situation:

CABLE MODEM
|->SWITCH
|->TV
|->Router
|->LAN
|->ACCESS POINT


Thanks in advance!


PS - some more details-:
-My problem is that my router is 'upstairs', so that's the point where my LAN starts. Now I have a wifi range problem and would like to put a second AP downstairs, but I'd have to move my router downstairs to do this (if i switch the AP on the hub downstairs, the connectect wifi clients won't be in the LAN).

I've made 2 images of the current situation and the desired situation, I hope it helps make it clear:

current situation

desired situation

.

 

[Alabalcho]

this is not going to work unless your ISP allocated you a whole range of IP addresses, and you will need much fancier rougher for that

 

[bill001g]

You are going to need other equipment.

You really need a second cable to solve this issue since you have 2 networks in the remote location. If you can run a second cable that may be the simplest. Since your router is only capable of 100m a solution that I will strongly recommend you DO NOT do is buy some cable splitters that allow you break your 4 pair cable into 2 2 pair cables. This will work but is extremely non standard.

The only other solution involves using switches/routers that support vlan tags. You can then create 2 vlans to share the cable.

You would put a switch in front of the modem and define vlan 1 and vlan 2 and assign ports to these vlans. You would plug your new AP into vlan 2 and the modem in vlan 1. In the other location (assuming you leave the router upstairs) you would put in a similar switch. In this case you would plug the tv and the WAN port into vlan 1...which connects it to the modem. You would plug a LAN port of the router into vlan 2 which would take the connection back to the other switch and make it appear as the new ap was connected to the LAN on the router.

 

[vinny9561]

thank you for the responses

-Splitting the cable crossed my mind, but I'm not gonna do it.
-Adding a cable would solve all my issues, but I cannot start drilling here or some people will want to kill me... And drilling issues are probably in another forum...
-I think there should be a solution with VLAN's indeed, however it will take me some time to experiment.

However, this evening, I borrowed a Linksys EA6400 (wifi router), and I put it behind my router (I connected it instead of my original AP to compare the range). So I was expecting that the EA6400 would get an internal IP address, but......... it gets an external IP address... Even though it's connected to the router. And that's what I want to obtain for my TV. Normally the router should give the EA6400 an IP address , but not the ISP?

I tried to put the EA6400 with a fixed (192.168.0.53 ) on my LAN (on the router) but it does not want to...