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help with PPPoE connection

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andresmorago

Senior Member
Hello all.

I was hoping you could provide me some help with an issue im having.

Long story short:
New fiber ISP
FIber terminal has PPPoE pass-trough enabled
ASUS AC68U running 386.1_2. Completely wiped several times.

I have configured PPPoE with ISP credentials. I get a public IP from ISP and im able to both ping and do name resolution from router itself and clients.
MTU and MRU are configured same than ISP fiber terminal and i have confirmed it with ping google.com -f -l 1452

At the end, websites dont load at all. Neither in wired or wired connections

Log here

Code:
nslookup
Default Server:  RT-AC68U-5358
Address:  10.0.4.1

> espn.com
Server:  RT-AC68U-5358
Address:  10.0.4.1

Non-authoritative answer:
Name:    espn.com
Addresses:  2600:9000:21de:d800:d:ac18:e2c0:93a1
          2600:9000:21de:aa00:d:ac18:e2c0:93a1
          2600:9000:21de:7c00:d:ac18:e2c0:93a1
          2600:9000:21de:d200:d:ac18:e2c0:93a1
          2600:9000:21de:5800:d:ac18:e2c0:93a1
          2600:9000:21de:7a00:d:ac18:e2c0:93a1
          2600:9000:21de:f400:d:ac18:e2c0:93a1
          2600:9000:21de:1e00:d:ac18:e2c0:93a1
          13.227.29.42
          13.227.29.29
          13.227.29.59
          13.227.29.117
 

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The correct MTU for PPOE is 1492 , try playing with that setting , I would also try another DNS provider just to prove a point. Ping doesn't mean your DNS is 100% .
 
The correct MTU for PPOE is 1492 , try playing with that setting , I would also try another DNS provider just to prove a point. Ping doesn't mean your DNS is 100% .
thanks. i have tried several MTU/MRU. 1380, 1400, 1452, 1480, 1492. So far, nothing. websites dont load and all.

ISP ONT has 1480 as MTU
1617285550597.png


I have configured google dns for some peace of mind testing. Again, name resolution does work as im getting ip addresses when asking for websites and pings work everywhere. i dont think this is a dns issue
 

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My setup is semi bridge with vlan....2 services running off the original 3 in one box and the asus running the internet van.
Even with this setup and "ONT" with DNS set , i cant surf....
 
My setup is semi bridge with vlan....2 services running off the original 3 in one box and the asus running the internet van.
Even with this setup and "ONT" with DNS set , i cant surf....
what can you recommend me to check then? i have tried full bridge and cant get a public ip on the router. i would only require internet as phone is still managed by ONT and i dont have IPTV
 
yeah. that was my initial goal but didnt work. router was getting an IP but websites werent loading.
i tried full bridge again (pppoe pt off) but this time i didnt configure the VLAN portion (i thought it was neccesary). Now i was able to get an ISP IP address and web navigation
 
Thats how my isp do it.Movistar...the configuration ONT side means you dont need to set the vlan instructions on the router...only issue i had was if i used the automatic DNS it wouldnt work...odd as the ONT clearly has the DNS set for that vlan to the router lol
 

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