RT-AC68U and Fiber Provider VLANs

[Saint_ago]

Cheers!

It's my first post here and i have a real freaking situation. So i need you guys help.

I have in my house a fiber connection, with IPTV and Internet only (no Voip).

This is my actual physical connection:

Fiber cable from provider
 |
 |
 V
ONT Blu-Castle (BC-ONT1B)
 |
 | (ethernet cable connected at router's WAN port)
 V
D-Link Router (DMG-6661) --(ethernet cable port 1)--> PC
 |
 | (ethernet cable from router's port 4)
 V
STB Decoder (IPH8000)

Ok. So my provider (Vivo) have 2 VLANs set.

10/0 - Internet (PPPOE)
20/3 - IPTV (Fixed IP from ISP)

But the STB uses some custom DHCP (from a Conditional Pool) and stuff, configured like the attached screenshots.

Anyway, i want to use my RT-AC68U and i don't know how. I've configured the IPTV on ASUS with Internet 10/0 and Port 4 with 20/3. I have three scenarios, and some questions:

Scenario 1

Replace the DMG-6661 with the ASUS

Fiber cable from provider
 |
 |
 V
ONT Blu-Castle (BC-ONT1B)
 |
 | (ethernet cable connected at router's WAN port)
 V
ASUS Router (RT-AC68U w/ stock FW) --(ethernet cable port 1)--> PC
 |
 | (ethernet cable from router's port 4)
 V
STB Decoder (IPH8000)

This worked for a while. I've replaced the DMG with the ASUS with STB still on, the internet computer worked like a charm but the IPTV worked for a few minutes. Zapping was really slow, and when i've booted the STB to see if it fixes the zapping speedy, when it booted was unable to get the IP. Probably because ASUS can't configure Conditional DHCP via interface, and was unable to set custom DNS for IPTV, and routes and stuff.


Scenario 2

Put the DMG-6661 after ASUS

Fiber cable from provider
 |
 |
 V
ONT Blu-Castle (BC-ONT1B)
 |
 | (ethernet cable connected at router's WAN port)
 V
ASUS Router (RT-AC68U w/ stock FW) --(ethernet cable port 1)--> PC
 |
 | (ethernet cable from router's port 4 connected to DMG's WAN port)
 V
D-Link Router (DMG-6661)
 |
 | (ethernet cable from router's port 4)
 V
STB Decoder (IPH8000)

PPPOE authentication set on ASUS. I've configured the DMG to untag both configured VLANs, keeping other configs (routing, Conditional DHCP) ok, and disabled the DMG wifi. Worked like a charm, very fast zapping, the IP was assigned do STB on boot, it was perfect. The only problem is that the STB sometimes use the internet (interactive services like movies on demand), and in this configuration the STB internet connection wasn't working.


Scenario 3

Put the DMG-6661 BEFORE ASUS

Fiber cable from provider
 |
 |
 V
ONT Blu-Castle (BC-ONT1B)
 |
 | (ethernet cable connected at router's WAN port)
 V
D-Link Router (DMG-6661) --(ethernet cable port 4)-->  STB Decoder (IPH8000)
 |
 | (ethernet cable from router's port 1 connected to ASUS port - [B]WAN? ETH?[/B])
 V
ASUS Router (RT-AC68U w/ stock FW)
 |
 |
 V
(ethernet cable port 1)--> PC

Have't tried this one yet. But i know that i have to configure the PPPOE on DMG to Bridge Mode and configure the dial up on ASUS. But i'm pretty sure that it won't work the internet on STB like Scenario 2. At least i guess not.



So, here are the questions:

1) Which scenario is recommended in my case? I REALLY want to use the AC68U as primary router for PC, and use its features in my network.
2) Is there a way to use the scenario 1 with the ASUS only? Using the stock FW? Or using other custom FW (Tomato? DD-WRT?). I do prefer to keep the stock FW, so installing another one is the last case scenario.
3) Is there a way to make the internet Works on STB using scenarios 2 or 3? If yes, how?
4) Please help me making the best configuration for this case!


I really don't have a problem on keeping the DMG for use with IPTV only, but i want to disable all other functions and keep only the ASUS with PC connection and WIFI.


I know how to enable and use Telnet on ASUS, but if there is some specific commands to make one of the scenery to work, i'll need the correct syntax...

There are some settings here, but i don't know if they'll work on the stock AC68U FW (Brazilian Portuguese, i can translate it if any of you is having a hard time to understand): http://www.htforum.com/forum/threads/clube-vivo-fibra.199673/page-280#post-5698855

Thanks in advance. If you need more information, i'll be glad to provide it.

 

[Saint_ago]

Here are the remaining screenshots!

 

[Saint_ago]

Anyone????

 

[Charles Evans]

Did you ever resolve this problem? We have a similar issue.

 

[sfx2000]

Let the RG (Residential Gateway) take care of the ingress and initial routing - if you can establish a DMZ endpoint within the Gateway, put your Router/AP there, and manage your LAN/WLAN from that NAT'ed IP, allowing the RG/IPTV gateway to do what is needs to do for the big screens...