Hello Shakil
If you have suggestions to make for lesson topics, feel free to use the Member Ideas page below. There you will find many of the topics suggested by other users. You may find that others have suggested something similar, and you can add your voice to theirs.
I’m glad to hear that you found the lessons useful and that you learned MPLS L3 VPN well from these topics.
In the meantime, take a look at these two NetworkLessons notes on the topics you suggest:
I hope this has been helpful!
Laz