Help configuring Genexis Titanium-2122A in bridge mode

[milindpatel63]

Hi, I have been provided "Genexis Titanium-2122A" by excitel. I need some help to configure it in bridge mode so i can use my own router with it instead of double NAT.

These are the wan settings page:

I remember previously a few years back, the username and password filed of pppoe was editable and we could basically reset the router and enter these pppoe details again and it would work. Back then bridge mode also worked.
But now excitel seems to have locked the router in some way. In case of reset, we have to contact excitel support to configure the router now.

To configure bridge mode, I have tried,
1. Turning ON "Enable PPPOE router bridge mode" toggle.
After which if i connect my own router to lan port, clone excitel router's MAC address on my own, then login via username and password in pppoe, i get IP address but only for like 1 min. The IP keeps getting changed every 1 min.
What i think is happening is, both excitel's router and my own is requesting IP at the same time and they are both getting assigned one by one.
I have to somehow stop excitel's router from obtaining IP address in bridge mode.

2. In the 2nd picture, there's a connection named "3_OTHER_B_VID_" specifically made for bridge gateway type.
If i enable the above, i see the same behavior and IP keeps getting renewed every 1 min approx.


If anyone knows correct steps to configure bridge mode on this router, kindly help,

 

[milindpatel63]

I solved the issue by using the following config

So basically, since excitel doesn't provide ipv6 in my area yet, i set the excitel's router to ipv6, so it gets stuck on connecting forever.

Meanwhile my downstream router gets ip via bridge mode and everything works.

Additional things to note,
I'm using openwrt as my downstream router.
I set my openwrt wan pppoe interface with excitel's cloned mac address.
Also, i had to set override mtu in openwrt for pppoe interface to 1484. Anything greater and i was having lots of issues with tls and websites not working.

 

[milindpatel63]

Some update regarding this,
I recently started having high ping and bufferbloat over ethernet, which turned out to be issue on excitel's side.
But during this i noticed, since i put my excitel router in bridge mode, there was no way for excitel to reach that router via TR-069 CWMP.
So my "Frimware Time" on router main page was stuck before i made this "bridge mode" change.

Depending on your usecase you might actually like this (for your router to be never messed up by your ISP), but i decided against this, since IPv6 is being rolled out slowly and i didn't want to miss any new configuration from excitel's end.

So i decided to switch back to double NAT instead of bridge mode.

But i tried reverting my config in every way, and my excitel router couldn't get IP.

So, i used the reset hole at the back of the router to reset it to factory state. That cause my username and password on WAN details page of the router to change to,
Username: excitel_sys
Password: 11223344
And i still didn't have any internet connection.
The above username and password fields were read only in router webui, so i used inspect element in browser to change those to my excitel username and password and clicked Save at the bottom.
But i still didn't get internet connection.

Then i used excitel android app -> Help option
This initiated my conversation with their new bot which has lots of automated functionality.
After clicking "New Chat" at top right, you have to select "Technical/Connectivity issues".
Then bot then automatically detected that my router was in reset state and it started "Device provisioning".
After which my router was applied the correct config and rebooted on it's own and everything worked from there on.

Really amazing bot imo.

Note: If you manually reset the router using the pin hole at the back, depending on your router model, you might get "excitel_sys" username like me on wan page.
At this stage, if you use the excitel bot, it will see that your router has reset, but it won't be able to do "Device provisioning" and will fail and create a new ticket.
So you will have to use inspect element in your browser and edit those username and password fields to your own excitel username and password and then bot works just fine.

 

[TheRLB]

Hi,

just checking back were you able to get bridge mode working with IPv6?

Would really appreciate it if you could share your experience

 

[milindpatel63]

I don't have ipv6 yet. So can't test that.

When I get ipv6, I'll definitely try bridge mode.