Reply To: ASUS DSL-AC88U Configured in Bridge Mode As the DSL-AC88U contains the Broadcom (BCM) 63138 modem chipset, which supports both VDSL2, G.INP and the currently being tested by BT Open Reach G.fast, I have provided a short…

[Kaan Aslan]

Thank you! I have already applied for Fiber. The new system will be coming to my house within a few days :)

 

AND Surprise!!!

I found a solution. It’s probably all due to the modem I was using. It was a coincidence but while it wasn’t working at all in bridge connection, I decided to switch the modem back to PPPoE until my Fiber modem and connection will arrive. So I switched it to PPPoE but I forgot to enable the 802.1q on the modem’s WAN configuration page. So I connected to my Router’s admin this time to switch it from PPPoe to Automatic IP but when the admin page showed up I saw that the WAN IP was there! I made a few tests to understand what was causing the issue. So it looks like, when we switch the DSL-AC88U modem to Bridge mode, it doesn’t connect at all as bridge. This function is not working properly if your ISP needs a VLAN tag. But what happened, when I forgot to enable the 802.1q (VLAN tag), my router went connected to the internet and directly got the WAN IP.

 

So in conclusion, if you want to be able to use DSL-AC88U in bridge mode, you’ll keep it in PPPoE but then disable 802.1q in the modem. And in your router you select your connection type again as PPPoE and set the VLAN ID to 35 as required for my ISP in the IPTV tab. All is working as like I chose the Bridge mode in a properly working modem.

 

I can’t believe this was the issue.

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