While looking at the setting of my wireless router, I am bewildered by the array of options available. Despite searching on Wikipedia to try to understand the various acronyms, I am still clueless to decide what is the best setting to use although the default works fine.

Rather than calling the internet service provider (ISP) to ask them the correct settings, I hope to learn more about the differences between some of the options listed below, so that I would be able to make a more informed decision from now onwards:

• PPPoE vs PPPoA
• LLC vs VC-Mux
• Bridge vs Routed

In addition, I would also like to know the significance of the following

• MTU
• VPI
• VCI

And whether or when I should manually specify DNS?