guys
its been almost 2 month mining Vert Coin, i recently noticed that mining scrypt-n consume alot of bandwidth (almost 650 MB per Day)
i just wanted to know if is it the standard, or there is something wrong going on
Interesting question, I never thought about bandwidth used for mining. I had a look at my traffic logs, and yes, something in the order of 500 MB/day seems to be possible.
First point: There really should be no difference in traffic between "normal" scrypt and scrypt-n. The client/server protocol stays the same, it's just the hashing algo which is changed.
Second point: To reduce traffic you could tune the stratum protocol. Set your miner's minimum diff to 128 or 256, so fewer hashes will be submitted to the pool. (I don't know if the pools you're mining at allow to set the diff manually. Read their FAQs or ask the pool operator...)
Third point: You could set up a local p2pool node on your miner pc. So the whole mining traffic will stay local. In exchange you will get additional traffic for vertcoind and p2pool network. If you use the available command line switches to limit vertcoind and p2pool to only a few peers, IMHO this traffic should be far less than mining traffic. But this is my thought only, if you choose to try this option, don't rely on this without measuring your actual traffic.
as I do in NL. 
