[ILUG-BOM] rconnect monitoring in Debian

[Harshal]

any body using relieance rconnect to connect to net. i am running a
debian box here, and i just got there 650 plan where you pay flat
Rs.650 and get always on connection with 1Gb of download limit. the
problem is how do i know how much have i downloaded? i contacted there
support they said, they don't have any info about this. infact once
the guy said that its users who will have to keep track how much they
have downloaded, i don't understand if they themselves don't know
whether i have crossed 1Gb or not, how will they bill me.

anyways, so i have decided to keep a track of myself. i am not using
kppp where i know how it can be done. how do i monitor when i am using
rconnect?