ZyXEL Communications ES3500-24 User Manual page 63

Click Advanced Application > PPPoE > Intermediate Agent. Select Active then click Apply.
1
Click Port on the top of the screen.
Select Trusted for ports 11 and 12 and then click Apply.
2
Then Click Intermediate Agent on the top of the screen.
ES3500 Series User's Guide
Chapter 6 Tutorials
63