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 --testnet or geth --networkid 3
• parity --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 --rinkeby or geth --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/