after I changed my router to a Netgear R6220 and flashed OpenWRT, I am not able to establish a connection for my VDSL from Deutsche Telekom via PPPoE. In front of my router, a Zyxel VDSL modem is in Bridge Mode.
Still, connection apptemp failed.
Also the username provided in the wiki is wrong and does not match a direct contract with the ISP, as 1&1 is not directly Deutsche Telekom. '@online.de’ is also wrong as it needs to be '@t-online.de'.
I'm not familiar with Deutsche Telekcom VDSL, but is your Zyxel bridge modem perhaps already configured to use VLAN ID 7 ?
Have you confirmed the Zyxel is working in bridge mode with another known router?
If Zyxel is configured to use VLAN ID 7, then your Netgear, perhaps should use default settings for WAN interface
option device 'switch0'
option vlan '2'
option ports '4 6t'
option vid '2' # this may be the default for R6220
config interface 'PPPoE'
option proto 'pppoe'
option ipv6 'auto'
option ifname 'eth0.2' # I think this may be the default for R6220
option password 'xxx'
option type 'bridge'
option username 'Anschlusskennung+Zugangsnummer+Mitbenutzernummer@t-online.de'
If I'm wrong, someone will correct me.
ps. I've changed all the online to read t-online.de in the wiki page.
These 2 lines are for Lantiq based devices with modem, yours has mediatek without modem.
Which line are you using exactly from the examples mentioned in the wiki?
The username/password you are going to use should match what your provider has assigned to you, regardless of what is in the wiki.
Alright, so you are running exactly the same setup as I am: an R6220 and a VMG1312.
This is a "Telekom firmware", the most recent one at the time of this post.
As far as I can tell, this is Zyxel's latest firmware, but "pre-configured" for Deutsche Telekom customers with one interesting twist: They know their customers will need their PPPoE connection tagged with VLAN ID 7, so It adds VLAN ID 7 to the incoming PPPoE connection on LAN port 4.
tag the router's WAN/PPPoE with VLAN ID 7 and connect it to to port 1, 2 or 3 on the Zyxel (I never tried this)
leave the router's WAN/PPPoE untagged and connect it to port 4 of the Zyxel
If you tag your WAN with VLAN ID 7 on your OpenWrt router, and connect it to the Zyxel's LAN port 4, it will not work. I believe this is because the same mechanism that adds the VLAN tag on port 4 also removes it on the way back to the router, which then will ignore the untagged traffic (I am absolutely not sure about that, though.)
I believe by sheer luck, you had your tagged WAN/PPPoE connected to port 4 of the Zyxel, which is the only option that will not work.
My recommendation would be:
for good measure, factory-reset the modem ... the Zyxel already comes configured as bridge modem, nothing else needs to be done there (at least for it to work initially)
connect the R6220's WAN port to the Zyxel's LAN port 4, this way you don't have to care about VLAN tagging at all
on the R6220, you only need the following configuration (which is the default WAN configuration, the same as if you reset your OpenWrt to defaults and set WAN to PPPoE):
When I try to go to e.g. https://duckduckgo.com/ or reddit.com I get an "Connection error". Is there something else I need to configure? Google, Youtube and some othere websites works fine. But most fail.
Edit: I forgot to enable DHCP on my notebook and had a static assigned adress. Now everything works. Thank you very much
You can do that. I seem to remember it improves the speed a tiny bit (which only matters if you are hitting 100 mbit anyway). But it doesn't make a big difference.
Note that, even if seems tempting, you must not disable QOS on the Zyxel if you are using the "automatic" VLAN tagging on LAN port 4. The Zyxel actually tags the VLAN via a QOS rule (see Network Setting > QOS > Class Setup in the Zyxel's admin interface.)
As for your other problem, sorry, I never encountered that and can't be of assistance there.