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I'm chasing a problem which requires me to deploy a private Ethereum network. I was wondering if it is absolutely necessary to add dedicated bootstrap nodes whose sole purpose is to aid in peer discovery, or can I make it a bootstrap node, and also make it participate in storing the blockchain and/or block validation for PoS? I don't want to bring up extra nodes to keep the cost within bound.

Also, looking at the materials I found online, I understand these nodes have to be always available. But it's not clear, if I have multiple such nodes, is it required for all of them to be available, or is it fine if at-least one of them is reachable at any time?

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You can run an existing geth node as a node+bootnode, just pass the bootnode parameters (nodekey) to the geth command when you start it up.

All bootnodes need not be online at all times. A new node must be able to reach at least one bootnode. Once it has collected an initial list of peers, it will be able to ask them for new peers as well, and will function even without bootnodes.

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  • Hi, thanks for the info. Can you please shade some light on the 2nd part of my question, if possible? – Bitswazsky Aug 10 '18 at 18:17
  • @Bitswazsky Apologies, I've edited my answer – Raghav Sood Aug 10 '18 at 18:38

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