Setting up BSNL FTTH with ONU(Bridge) + Router(OpenWRT)

  • Thread starter Thread starter sayantan45
  • Start date Start date
  • Replies Replies 47
  • Views Views 439
Solution
Some ONTs have bridge issues where it won't work when the bridge profile mac on ONT and the PPPOE wan mac on the router are same. To bypass it, follow the ONT bridge configuration steps (Non Alphion Based):

Note: Do not DELETE other profiles until you create Bridge profile and save/add it.

1. Take Backup of ONT in working state.

2. Take screenshot of WAN status Page with PPPOE and Voice (if you use then don't delete it). Make sure to include your PPPOE WAN MAC from that status page in screenshot as you need to enter it on the router.

3. Create Bridge profile with MTU 1500, Enter your PPPOE vlan, Service mode Internet, 802.1p (null), Disable the LAN DHCP and bind the LAN ports with the bridge profile.
Hit add/save

4. Delete...
@sayantan45 Remove VLAN tagging from OpenWrt settings. The connection between OpenWrt WAN and ONT's LAN port should be VLAN UNTAGGED.

It would be helpful if you can post your /etc/config/network or LuCI screenshot with the PPPoE Username and Password REDACTED.

Also BSNL seems to be using MAC Binding so your need to use the MAC address of the previous Router or the ONT that connected to BSNL PPPoE before. Otherwise you need to ask your LCO or local BSNL office to remove any existing MAC Binding for your account.
 
Upvote 0
@ka2107
Screenshot-2025-06-15-224851.png

image.png

How do i change the mac? i have changed the WAN mac to ONU mac using GUI, but still didnt worked.
 
Upvote 0
Back