Ethereum Test network
Nguồn: https://medium.com/coinmonks/ethereum-test-network-21baa86072fa
https://medium.com/compound-finance/the-beginners-guide-to-using-an-ethereum-test-network-95bbbc85fc1d
Ethereum has three test network for developer to develop and to do testing, namely ROPSTEN, KOVAN and RINKEBY.
Ropsten
- PoW testnet
- Network id:
3 - Block time:
sub-30 seconds - Commands:
geth --testnetorgeth --networkid 3parity --chain ropsten- Explorer https://ropsten.etherscan.io/
- Github https://github.com/ethereum/ropsten
History:
- Started in November 2016. Named after a subway station in Stockholm.
- Was DoS attacked in February 2017 which made synching slow and made clients consume a lot of disk space.
- Was revived in March 2017 and became usable again.
Pros:
- Best reproduces the current production environment, i.e. system and network conditions on the live Ethereum mainnet, because it’s PoW net.
- Can be used with both geth and parity.
- Ether can be mined. Or requested from a faucet:
- https://faucet.metamask.io/
- http://faucet.ropsten.be:3001
- https://faucet.bitfwd.xyz/
- What public test-networks and faucets exist?
Cons:
- Not immune to spam attacks. Because of this it’s less stable.
Kovan
- PoA testnet started by the Parity team
- Network id:
42 - Block time:
4 seconds - Command:
parity --chain kovan - Explorer https://kovan.etherscan.io/
- Github https://github.com/kovan-testnet/proposal
History:
- Started in March 2017. Named after a subway station in Singapore.
Pros:
- Immune to spam attacks (as Ether supply is controlled by trusted parties)
Cons:
- Not supported in geth.
- Doesn’t fully reproduce the current production environment as it uses PoA.
- Ether can’t be mined. It has to be requested from the faucet.
Rinkeby
- PoA testnet started by the Ethereum team. Uses Clique PoA consensus protocol.
- Network id:
4 - Block time:
15 seconds - Command:
geth --rinkebyorgeth --networkid 4 - Explorer https://rinkeby.etherscan.io/
- Github https://github.com/ethereum/EIPs/issues/225
- Website https://www.rinkeby.io
History:
- Started in April 2017. Named after a metro station in Stockholm.
Pros:
- Immune to spam attacks (as Ether supply is controlled by trusted parties)
Cons:
- Supported by geth only
- Doesn’t fully reproduce the current production environment as it uses PoA.
- Ether can’t be mined. It has to be requested from a faucet:
- https://faucet.rinkeby.io/
