Note
If you are new to the blockchain technology, taking our Introduction to Blockchain Technology self-paced course is highly recommended. Also, for a comprehensive coverage of blockchain development in Ethereum or mastering Solidity programming, taking our below self paced courses is highly recommended:
Recap
In our previous article (Review of Ethereum API and Console Options), we discussed Ethereum API and its console options.
In this article, we learn about Ethereum Networking Options.
Networking options
Networking options provide us with the flexibility to define the network’s details, such as the listening port, the maximum number of peers, the maximum number of attempts for pending a connection, the discovery mechanism in the network, and so on. The following list specifies the various options that are available:
- –bootnodes, –port, –nodekey, and –nodekeyhex are the networking option flags we have come across. Generally, –bootnodesv4 is set for light server and full nodes. –bootnodesv5 is set for light servers and light nodes.
- If you have already connected a few nodes, for example, with 2 nodes, and you don’t want any other nodes to be added to the local private network accidentally, set –maxpeers to 2. The default value for maxpeers is 25.
- –nodiscover is used for adding peers manually without the discovery protocol. This flag is used for testing a single node or network with a limited number of nodes.
- Other members of the networking options family are –maxpendpeers, –nat, –
-v5disc, and –netrestrict. In a local private blockchain, –maxpeers and –
-nodiscover are frequently used.
- Starting from geth v1.5.4, –netrestrict is added to the toolbox. The flag takes an IP address, and geth will only communicate with the peers from this address.
In the following command, we specify maxpeers to be 2, disabling the peering discovery mechanism and restricting the network communication to 127.0.0.1:
$ geth –datadir < local data dir> –networkid <network id> –maxpeers 2 — nodiscover –netrestrict 127.0.0.1
We have introduced every member of the networking options family. Feel free to use them and get familiar with them.
Next Article
In our next article (Review of Ethereum Transaction Pool Options), we discuss what Ethereum Transaction Pool Options are and how they work.
This article is written in collaboration with Brian Wu who is a leading author of “Learn Ethereum: Build your own decentralized applications with Ethereum and smart contracts” book. He has written 7 books on blockchain development.
Resources
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Articles and Tutorials on Blockchain Technology
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- History and Evolution of Blockchain Technology from Bitcoin
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Articles and Tutorials on Ethereum and Solidity
If you like to learn more about blockchain development in Ethereum with Solidity, reading the following articles and tutorials is highly recommended:
- Review of Architecture and Components of Ethereum
- Comprehensive Blockchain Ethereum Developer Guide from Beginner to Advance Level
- How to Write Ethereum Smart Contracts with Solidity in 1 hour
- Review of Architecture and Components of Ethereum
- How Ethereum Manages Accounts
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- How Smart Contracts Work in Ethereum
- How Ether and Gas Work in Ethereum
- How Ethereum Virtual Machine works
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- List of Tools and Technologies in Ethereum Ecosystem
- Review of challenges in distributed systems
- Review of Cap Theorem in Distributed Systems
- Horizontal Scaling versus Vertical Scaling in Distributed Systems
- How to Scale up Ethereum Blockchain Applications
- Review of scaling solutions for Ethereum
- How to Manage Ethereum State Channel with Raiden
- How Plasma Chains Work in Ethereum
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- How Proof-of-Stack Consensus Works in Ethereum
- A roadmap for Implementing Ethereum 2.0
- How to work with Decentralized Data and Content Storage in Ethereum
- How Decentralized Messaging with Whisper Works in Ethereum
- Review of Infura for Ethereum Development
- Review of Infura Ethereum API
- How to Use Remix with Infura for Ethereum Development
- How Ethereum Client API Works
- How Ethereum IPFS Storage Works
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- How to Work with Ethereum Swarm Storage
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- How to Handle Ethereum Messages with Whisper
- Review of Popular Ethereum Smart Contract Libraries
- Review of Private and Permissioned blockchain
- How to Set up a Local Private Ethereum Blockchain
- How to Run Geth on a Local Private Ethereum Blockchain
- How to Build a Local Private Ethereum Blockchain with Mining
- How to Run Geth on a Local Private Ethereum Blockchain with Mining
- How to Create an Account on a Local Private Ethereum Blockchain
- How to Use Ethereum Optional Flags with New Chains
- Review of Ethereum Options for Development and Testing
- Review of Ethereum Developer Chain Options
- Review of Ethereum API and Console Options
- Review of Ethereum Networking Options
- Review of Ethereum Transaction Pool Options
Articles and Tutorials on Hyperledger Family
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- Introduction to Hyperledger Architecture, Projects, Tools and Libraries
- Complete Review of Hyperledger Fabric Architecture and Components
- Hyperledger Fabric for System Administers versus Developers
- How to use Prometheus and Grafana to monitor Hyperledger Fabric
- Blockchain Developer Guide- How to Install Hyperledger Fabric on AWS
- Blockchain Developer Guide- How to Install and work with Hyperledger Sawtooth
- Blockchain Developer Guide- How to Install Hyperledger Burrow on AWS
- Blockchain Developer Guide- How to Install Hyperledger Iroha on AWS
- Blockchain Developer Guide- How to Install Hyperledger Indy and Indy CLI on AWS
- Blockchain Developer Guide- How to Install Hyperledger Seth and Docker on AWS
- Blockchain Developer Guide- How to Configure Hyperledger Sawtooth Validator and REST API on AWS
- Blockchain Developer Guide- How to Build Transaction Processor as a Service and Python Egg for Hyperledger Sawtooth
- Blockchain Developer Guide- How to Deploy Ethereum Smart Contracts with Hyperledger Burrow
- Blockchain Developer Guide- How to Create Cryptocurrency Using Hyperledger Iroha CLI
- Blockchain Developer Guide- How to Explore Hyperledger Indy Command Line Interface
- Blockchain Developer Guide- Comprehensive Blockchain Hyperledger Developer Guide from Beginner to Advance Level
- Introduction to Hyperledger Sawtooth Blockchain Development
Articles and Tutorials on R3 Corda
If you like to learn more about blockchain development on Corda , reading the following articles and tutorials is highly recommended:
Articles and Tutorials on Other Blockchain Platforms
If you like to learn more about blockchain development in other platforms, reading the following articles and tutorials is highly recommended: