I have a question, I'm trying to find out how much data I've sent to the internal and can see two differing balues in the information from my draytek router.
Which is showing my the byte cound for sent data?

Diagnostics >> Detailed Statistics, WAN port, Transmit Total, Tx Octets: 10,598,432,228
Defined as (The number of transmitted (good and bad) bytes. Includes FCS, but excludes framing bits. )

or

System Status, WAN Status, TX Bytes: 693,591,621
definied as (The total transmitted bytes at the WAN interface. )