How to use Nokia 2425G router in bridge mode?

ConfusedUser · Feb 20, 2021

Hi,

Total networking noob here and receieved airtel connection just couple of days back so I am still exploring.

Airtel provided Nokia G-2425G GPON router however I would like to use my Mi 3G router running on OpenWRT as my main and use the ISP provided router as just a gateway/bridge mode with wired LAN cable.

I noticed that there is "Connection mode" in Network > WAN page but it is disabled for me, not able to change or modify any fields.
Source

There is an option to Save/Delete WAN connection on same page, but I do not know my PPPoE password.

Also, once I configure this to run on Bridge mode what do I need to do on my main router?

I am totally lost here on how to configure this setting or what tutorial to follow.

yougotmehere · Feb 22, 2021

ConfusedUser said:
Hey thank you this approach looks good to me. But I am trying to understand why do we need to have PPPoE authentication on both the routers? By default it will happen on Nokia which cannot be disabled or removed then why another PPPoE mode on Mi router? (I am having hard time finding password for my account which is not my account number)

Would you suggest I have pppoe only on nokia and use Mi for wifi and all device connect to it? Also, where and how do I need to change the VLan ID to 100?

Thats the way how Airtel Bridge mode is setup. On a positive side, both the routers would Invidually connect with their seprate IP Addresses. Incase, you don't wanna use the Bridge mode in MI Router, you could use that as an access point instead. The Vlan ID should be under where you setup the PPOE connection. You might need to check it under Advanced Settings under your Mi Router. If you aren't able to find the VLAN ID, the bridge mode might still work as i have seen someone who couldn't find it and it works for him. AFAIK, the passowrd is always the account number. If that doesn't work, ask the Local engineer to change it.

ConfusedUser · Feb 22, 2021

@yougotmehere I tried following the steps you told me but still my Mi router would not connect I keep getting error in PPPoE connection. I confirmed my password in indeed account number via router logs.

LAN :
Source

WAN :
Source

Port Connections :
Source

VLAN ID :
Source

Interfaces :
Source

My config file if that helps.

Code:

root@OpenWrt:~# vi /etc/config/network
config interface 'lan'
        option type 'bridge'
        option ifname 'eth0.1'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option mtu '1506'
        option ipaddr '192.168.31.1'

config device 'lan_eth0_1_dev'
        option name 'eth0.1'
        option macaddr '*****'

config interface 'wan'
        option ifname 'eth0.2'
        option proto 'pppoe'
        option ipv6 'auto'
        option username '******'
        option password '*******'
        option delegate '0'
        option mtu '1506'

config interface 'wan6'
        option ifname 'eth0.2'
        option proto 'dhcpv6'

config switch
        option name 'switch0'
        option reset '1'
        option enable_vlan '1'

config switch_vlan
        option device 'switch0'
        option vlan '1'
        option ports '6t 3 2'
        option vid '1'

config switch_vlan
        option device 'switch0'
        option vlan '2'
        option ports '6t 1'
        option vid '2'

config switch_vlan
        option device 'switch0'
        option vlan '3'
        option ports '1t'
        option vid '100'

yougotmehere · Feb 23, 2021

@ConfusedUser I have seen your SS's and i beleive they are good wrt to the Airtel modem. Here are the things that you can try on your MI Router.
1. Not sure if MTU size has any direct correlation with the login but you need to change it to 1492 instead of 1506.
2. Airtel doesn't support IPv6 for now. Change it to IPv4 where ever applicable and disable IPv6
2. Enable VLAD ID : 100 on all the Lan and WAN ports except Wifi on MI Router
3. If the above doesn't work, try swaping the Lan4 port on Airtel modem with Lan1 port and set it to Bridge mode. For some the bridge mode works on that port.
4. Hope you didn't copy the PPOE login password in the MI Router and rather typed it?
5. If all of the above doesn't work, i suspect something to be wrong with your OpenWRT firmware. Try borrowing an another router with stock firmware to test.

ConfusedUser · Feb 23, 2021

@yougotmehere Thank you so much for your help, turns out Airtel was blocking my port from bridging. I called up the technician and he made changes in the backend, then port 4 started working.

Now the problem is my Mi router speed is very very low approx 30Mbps, Nokia is giving me 200Mbps.

ConfusedUser · Feb 26, 2021

[Resolved] : Had to call Airtel and they activated bridge mode on Port 4.

citylife · Jan 6, 2022

yougotmehere said:
@ConfusedUser Go to Airtel Modem settings >> LAN Settings a.......Support team

thanks. it worked. But speed came down from 300 to 90 even with wi-fi off on airtel Nokia router. Any solution?

doineedto · Jan 6, 2022

ConfusedUser said:
@yougotmehere Thank you so much for your help, turns out Airtel was blocking my port from bridging. I called up the technician and he made changes in the backend, then port 4 started working.

Now the problem is my Mi router speed is very very low approx 30Mbps, Nokia is giving me 200Mbps.

I assume you are using OpenWRT on your router. Try this: Different speeds on bridge mode | Airtel Xstream Broadband

Edit: For everyone facing decreased speeds, the approach will remain the same as above. The steps might change though

How to use Nokia 2425G router in bridge mode?

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