Since many people would have been signing up with the Buzz Telco promo recently, I thought I'd share this info for people who intend to use their existing Optus Modem (in my case the Sagemcom F@St 3864).
To set it up you need to login to your modem as below:
http://192.168.0.1/main.html?loginuser=2
user: admin
pass: Y3s0ptus
Go to WAN Service, remove all existing Interface
* Then create new one, by clicking Add
* Select eth4
* Tick IP over Ethernet, enter "-1" on both field and select IPv4
* Tick "Use the following IP address" and enter the details as per email from Buzz Telco
* Enable NAT and Enable IGMP, click next to save and ensure its updated in the WAN Service table
Then go to DNS
* Tick "Use the following Static DNS IP Address"
* Enter Primary & Secondary DNS server as per email from Buzz Telco
That should complete your configuration. Make sure you're plugged to the right Uni-D Port too.
Hope this helps someone because I almost bought a new modem after being told by Buzz Telco rep that its incompatible (which theoretically is correct if you don't have access to the Optus admin password above)
Thanks mate.
Am I correct in saying you are on FTTP? I don't believe it would work on FTTN.