pls help about mtu setting


My DSL company asks me to set the modem 146 2 and my old company used 14 92

What is the different?

Why it is not standard 1 500?

Thank you

google (or any search engine) is your friend.

Because they're wrapping your packet inside another packet that they
then transmit on a line with a 1500 byte MTU. The header on their
packet needs a few bytes, so you can't have them.

Bill Herrin

Are you authenticating with PPPoE? If so, it has a maximum MTU size of 1492 due to the encapsulation overhead.