I have geth 1.5.4 installed on my ubuntu box. Here is the geth command line documentation for networkid:
–networkid value Network identifier (integer, 0=Olympic (disused), 1=Frontier, 2=Morden (disused), 3=Ropsten) (default: 1)
So, to connect to the Ropsten network, I started geth with --networkid 3
.
geth –fast –networkid 3 console
However, it did not connect to the Ropsten network at all. My node started syncing but not sure what network it connected to. When I don't specify networkid but just pass –testnet:
geth –fast –testnet console
it connects to Ropsten network correctly and starts syncing.
What is the difference between specifying --testnet
vs --networkid 3
?
Best Answer
In addition to
--networkid 3
starting geth with--testnet
also makes sure that you use the correct genesis node for Ropsten.You can start Ropsten also this way: