Which router allows multiple vlan tagging to a single port?

[drtech]

How do you tell Windows 10 to use PPPoE on VLAN 100?

Windows will automatically send out PADI frames on all connected interfaces and will try to establish connection with the first PPPoE server that replies ..

Why is PPPoE going down when you create VLANs is still a mystery

Are you able to use microsip using VLAN 660 now ?

 

[drtech]

Why is PPPoE going down when you create VLANs is still a mystery

Do a packet capture on untagged NIC port and tagged 100 NIC and posts the pcap file here .. maybe I can take a look ... Although at this point I really think that the airtel modem is doing some wierd shit with 802.1Q tags

 

[drtech]

Do one more thing just for the sake of it. put ports 3 and 4 in bridge mode.

Connect port 3 to the TP-Link Router (Archer C20 Original Firmware) and dial PPPoE on it.
Connect port 4 to your computer using VLAN 660 and try firing microsip and see if things work

 

[Sameek]

@drtech will do these steps in the coming weekend. Occupied with work related stuff. Thanks for all the help.

 

[Sameek]

Do a packet capture on untagged NIC port and tagged 100 NIC and posts the pcap file here

Not sure how to upload the PCAP files here.
Putting the screenshots in the same order as they appear in Wireshark for both Untagged and Tagged 100 NIC

Untagged NIC scrshot#1 (Internet Working)
Untagged NIC scrshot #2

Tagged 100 NIC scrshot#1 (Internet Not working)
Tagged 100 NIC scrshot#2
Tagged 100 NIC scrshot#3

put ports 3 and 4 in bridge mode

This needs support from Airtel Backend Team. I want to avoid engaging with them as this needs significant effort and time.

Pls let me know if you spot anything in the pcap files which is worth taking up with Airtel team. Will engage with them accordingly.

 

[drtech]

This needs support from Airtel Backend Team

I guess you can enable bridge mode for port 3 directly from the web UI.

Also do the packet capture on a Linux computer for the bare wire (do not use VLAN, use the base adapater eth0) since windows strips down the VLAN tags

 

[drtech]

@Sameek
I tried out the above setup with an Archer C20 V5 flashed with Linaro's 19.07 image, and I have come to the conclusion that the WAN port does not support more than 1 VLAN concurrently.

You need to use one of the LAN ports (untagged for PPPoE, tagged with VLAN ID 660 for voice). Put the other LAN ports (2-4) in a separate VLAN for LAN access.

Can you test WiFi 5Ghz stability on this router with openwrt for me ?

To answer my own question, WiFi 5Ghz is not at all stable on the latest official OpenWRT Release (Version 21.02.0-rc3).
However WiFi 5Ghz as well as 2.4Ghz is rock solid if you use Linaro's Build. PPPoE as well as multiple SSIDs are working fine on this build.