Questions tagged [ibft]

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Order of recreation and proposing of block

With regard to this post, I would like to know what happens if the proposing and recreation of a block happens at the same time. For instance, if we keep the default recommit interval of 3s and set ...
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9 views

Relationship among total and bizantine number of nodes in IBFT2

According to [1]: In IBFT 2.0 networks, approved accounts, known as validators, validate transactions and blocks. Validators take turns to create the next block. Before inserting the block onto the ...
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1answer
32 views

Ethereum protocol - description fields on Alethio block explorer

I am using Alethio block explorer in an IBFT2 based chain. I am trying to understand some fields there. Does anyone know what they mean? Are the COMMITSEALS the signature of the validators? What is ...
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0answers
37 views

Is there any way to configure hyperledger besu to mine blocks only when there are transactions?

I have been following this tutorial: https://besu.hyperledger.org/en/stable/Tutorials/Private-Network/Create-IBFT-Network/ Everything works fine, however I can see that every 2 seconds new block is ...
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1answer
60 views

Load testing Besu + IBFT2?

The context: I have a simple app that that consults historic of events frequently. It works fine on my development machine, with just a few thousands blocks. I am not sure if it will continue to work ...
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2answers
391 views

What is the difference between IBFT(Istanbul BFT) and PBFT?

I recently got to know about IBFT and Quorum and started studying on their consensus protocols. And what is the difference on IBFT and PBFT? Are they pretty much like the same and, when considering ...
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1answer
78 views

Front-running in Quorum IBFT

Are pending transactions processed sequentially in IBFT? In a networks based on PoW you would usually pay higher gas price in order to get your transaction mined first. Is there a way to manipulate ...
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1answer
335 views

Mining a private transaction in quorum

I was going through the quorum docs and got stuck on how private transactions are mined? When two nodes, say Node A and Node B do a private transaction between themselves. Which node then mines the ...
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1answer
851 views

Quorum Minimum Number of Nodes for Raft Consensus and Istanbul BFT

A Quorum Raft cluster of 3 nodes can tolerate a single node failure, while a Quorum cluster of 5 can tolerate 2 node failures. What is the equivalent if one uses Istanbul BFT?
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2answers
1k views

Quorum IBFT - PBFT - BFT - 3F + 1 / 3M + 1

Understand that Quorum supports IBFT. Am trying to decide what is the suitable number of nodes to setup up to support X number of byzantine nodes. Using PBFT formula, 3F + 1, I am trying to come out ...
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2answers
986 views

In Quorum, between Raft and Istanbul BFT (IBFT) consensus, which has a better (faster) block confirmation time? Assuming Ceteris Paribus

In Quorum, to help decide between Raft and Istanbul BFT (IBFT) consensus, which has a better (faster) block confirmation time? Assuming Ceteris Paribus.
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2answers
329 views

quorum istanbul byzantine fault tolerance (ibft) consensus nodes count for failover - recommended configuration

In Quorum, specifically for istanbul byzantine fault tolerance (ibft) consensus algorithm, what is the ideal node count for failover? i.e., recommended configuration? Nathan Aw (Singapore)