Posted: Mon Dec 20, 2021 18:43 Post subject: RT-AC68U vlan tagging for WAN
Hi all,
I have an FTTH connection and the Router is connect to the ONT with an ethernet cable on the WAN port. I'm using an Asus RT-AC68U with Firmware: DD-WRT v3.0-r44715 (11/03/20).
My Italian ISP (Tiscali) gave me the following settings in order to connect the router to internet (see isp_settings.png attachment).
I tried to apply the given settings using the WEB GUI, but the WAN IP is 0.0.0.0. These are the settings I've applyed:
- On Setup / Switch Config I checked the Vlan 8 in the relative column of WAN Port (currently is not assigned to any bridge)
- On Setup / Networking I've created a tag for vlan8 with tag number 35 (I also tried 835 but nothing changed). In the same section I've assigned the WAN Port to vlan8
- In the Basic Setup I've choosen PPPoE entering the username and password the ISP gave me
Am I missing something else?
Many thanks to everyone will answer to this post, I really appreciate.
Setup_Networking.png
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Setup > Networking
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Setup_BasicSetup.png
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Basic Setup
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isp_settings.png
Description:
ISP connection settings PPPoE: Fisso means "Static"
Joined: 18 Mar 2014 Posts: 12915 Location: Netherlands
Posted: Tue Dec 21, 2021 7:35 Post subject:
First of all you are running an old and unsupported build.
See the forum guidelines with helpful pointers about how to research your router, where and what firmware to download, where and how to post and many other helpful tips:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
My advice:
Upgrade to the latest build 47900
Reset to defaults after upgrading and put settings in manually
On the switch tab just replace the 2 from VLAN 2 with 835
Thanks egc,
I'll try to update to the last available version and configure all the stuff from scratch. If I've got well you suggested to apply the tag 835 to vlan2 without associating the WAN port to vlan8 as I've done before, is it right?
Joined: 18 Mar 2014 Posts: 12915 Location: Netherlands
Posted: Tue Dec 21, 2021 11:56 Post subject:
Ang3l0n3 wrote:
Thanks egc,
I'll try to update to the last available version and configure all the stuff from scratch. If I've got well you suggested to apply the tag 835 to vlan2 without associating the WAN port to vlan8 as I've done before, is it right?
I've installed the build 47900 as you suggested and, after flashing the new firmware, I've performed a factory reset.
Now the WLAN in assigned to vlan2 and the associated tag is 835 but I still can't get a valid IP.
I also tried to flag "tagged" in the Switch page, after that I was able to reach the ONT webpage with same IP of the router (192.168.1.1).
Do you have any other suggestion?
Thanks for you support
I changed the LAN IP but I can't still establish internet connection. Is there a way to see some logs? I would understand why the router can't get internet access
I get this error when I try to assign the Vlan ID:
Code:
swconfig dev switch0 vlan 2 set vid 835
Unknown attribute "vid"
The WAN interface is hard code to VLAN 2 and all the config is perfect as is. So in my opinion, the simplest thing is to do to make the WAN tagged to VLAN of ISP choice is to do the following things:
1) Set WAN port to tagged 835
- Setup > Switch Config
- Set Wan port to Tagged
- VLAN Add, 835
- Set WAN port to VLAN 835 (you can un-tick VLAN2)
Then Either
2) Build bridge between VLAN 2 and VLAN 835.
- Setup > Networking >
- Create Bridge, Add bridge, e.g. br2
- Create Bridge, Assign to bridge, Add VLAN2 to br2
- Create Bridge, Assign to bridge, Add VLAN835 to br2
OR
2) Change VID for interface VLAN 2 to 835
- Setup > Networking > VLAN Tagging, VLAN2, Tag Number = 835
For step 2 'bridge', you may need to do a Save and Apply after every step as you may not see the option of br8 until it is in NVRAM.
This is then all in NVRAM and no startup commands needed.
For step 2 'Change VID' method, I have not used this particular feature before, but it appears that you can manipulate the VID of a VLAN interface. So if that works it is the cleaner way to do it in my opinion.
But in any event, this approach offers a 100% GUI and NVRAM approach I believe. I hope this helps you solve the problem. _________________ --------------------------------------------------
VLANs, port trunking, virtual SSID (Guest)
DNSmasq, NTP, syslog, nflow
Hub and spoke, multi-site, routed VPN (OpenVPN client), split tunnel
1 DNS zone per site, forward, reverse look-up across all sites
Asus RT-AC68U rev A2 DD-WRT v3.0-r48138 std (01/17/22)
Asus RT-AC68U rev C1 DD-WRT v3.0-r48138 std (01/17/22)
Asus RT-AC1900P DD-WRT v3.0-r48138 std (01/17/22)
Asus RT-AC1900P DD-WRT v3.0-r48138 std (01/17/22)
Netgear R7000 DD-WRT v3.0-r48138 std (01/17/22)
Linksys E2000 DD-WRT v3.0-r33492 mega (10/10/17)
Last edited by jjwatmyself on Fri Jan 28, 2022 3:44; edited 1 time in total
thank you for your help but even this attempt has failed.
I followed your instruction but it didn't work (see attached screens).
I've assigned almost every vlan to the WAN interface, I tried vlan2.835, vlan835 but none of this settings worked.
If you see my first post on this thread you can see that I've just configured my username and password for the PPPoE connection in the section Setup > Base section
I'm giving up, I spent over a month to do a very basic task: connect my router the internet but this firmware don't works for me.
Thanks to everyone tried to help me on this issue.
