Questions tagged [peers]

Questions related to other nodes in the Ethereum network, such as finding, connecting, and disconnecting from them.

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How to detect node(peer) in the network

Hi I need check is certain node is currently connected to the network(or current peer). How I can do it, and how to identificate node by ip address or how? P.S. via api or (sorry not go-geth client) ...
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The bootnode is not working properly

I am running a private ethereum network using geth. I started the bootnode first following the documentation and ran 5 different nodes on the same machine with same genesis file on same network with ...
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Geth SWARM no peers found!

Synced via Geth lightnode to latest block --cache=2048. (7200RPM HDD with 8GB RAM) Then created new geth account and did swarm --bzzaccount $BZZ I'm am able to only browse localhost, upload to local ...
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Private Chain Peering and Port Problem

Two AWS nodes on separate machines are trying to peer. They are listening and discovering at port 30303, when I open these ports for inbound connection they are still unable to peer; but, when I open ...
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2answers
28 views

Can't add peers outside of local machine

I am able to spin up as many nodes on the same machine as I would like and have them peered in the same private blockchain network. But when I try to use addPeer() on a separate EC2 instance, I am ...
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Problem with more than one light node peer connection

I have the following nodes running : FULL NODE and LIGHT SERVER geth --datadir node1 --port 30303 --rpc --rpcport 3003 --rpcaddr 127.0.0.1 --ipcpath node1/geth.ipc --rpcapi="db,eth,net,web3,personal"...
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1answer
47 views

Light node cannot connect peers

I am running a full node in a testnet and I am trying to connect a light node. I am using the following command: geth --datadir node1 --port 30313 --rpc --rpcport 3013 --rpcaddr 127.0.0.1 --ipcpath ...
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Geth local and remote port numbers [closed]

I've started three Ethereum nodes using Geth, and they happen to be on the same node. I've specified the ports (30401, 30402, 30403) and used the --nodiscover options. On each of the nodes, I've ...
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1answer
25 views

How many nodes does Geth attempt to connect to by default?

Bitcoin Core tries to connect to 8 nodes by default. How many does Geth attempt to connect to for the eth protocol (normal network gossip)? Is there a set number in the first place?
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1answer
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Connect different machines with PoA

i want to connect two different machines in a ethereum private network! I did it before with a normal PoW-Consesus but with PoA created by puppeth i cant see some Peers when i try: admin.peers ...
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Problem peers in a cluster [SOLVED]

I have a cluster with 2 nodes and I would like to create a testnet by connecting them with geth. I am using the following command: Node1: geth --datadir node1 --port 30302 --rpc --rpcport 3003 --...
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Hard fork details: peering, propagation, block building

Some questions regarding the upcoming fork and hard forks in general: Will clients running the new version of geth be able to peer with clients running the old version? If they can peer with each ...
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55 views

Mainnet sync Broken

I am having a Mainnet on Azure VM which was syncing the network as expected, but mean while after adding Ropsten network syncing on the same VM simultaneously I'm facing problem with Mainnet sync ...
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1answer
111 views

Decentralized Access Control in permissioned Blockchain

For a business use case I am conceptualizing for my master's thesis, wich is based on a Blockchain system, I need to understand impacts on decentralization/trustlessness. Many people argue that ...
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1answer
36 views

Peering over a direct L2 link without IP addresses

As part of a big solution incorporating blockchain and data networking, I'd like to know how would 2 nodes establish a blockchain peering on their direct L2 Ethernet Link that has no IP addresses ...
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Techniques to count nodes [duplicate]

What are the different techniques to count nodes in ethereum? ethernodes.org has a count of nodes, how can we verify if that is true ? Are there any other techniques to do similar counting. Can you ...
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80 views

Configuring geth so that it can only connect to my private local blockchain?

Basically I would like to know how to configure geth so that it can only connect to my private ethereum blockchain that is hosted on another machine? Many thanks in advance!
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1answer
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What has changed with admin.getPeer?

admin.getPeer in the past returned something like this: admin.addPeer("enode://...
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461 views

admin.addPeer returns true while admin.peers is blank[]

I have initialized genesis file in my system, this is my genesis.json file- { "alloc": { "790a2dc4ea3aa44eb27cbb430cf4e1cff989706790": {"balance": "9999999999999999999999999999999999"} }, ...
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1answer
90 views

Does each node dynamically connects to its connected nodes' peers?

I want to give example from private Ethereum network which has 5 nodes, but we can generalize it for much larger network that has thousands of nodes. On the figure double arrows represents connected ...
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1answer
42 views

Can a new node join the chain without bootnodes

I added a brand new node into the private network, without bootnodes. Over time this node DIDN'T seem to add any peers to talk with. Is that normal and expected?
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205 views

Why kademlia for p2p?

It seems pointless to me. I looked at the actual implementation. Kademila is used to discover peers, but there is no gained benefits. As when the node connects to peers, it simply just grab from the ...
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43 views

Can someone explain in short how the peering system works?

Can someone explain in short how the peering system works: How peers are initially found in a new installation? How peers are added and removed? If/how peers are subject to quality controls?
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1answer
239 views

Locally submitted transactions to the light node gets lost if the node is restarted

What happens to the transactions submitted to light node in the following scenarios? 1) Light node does not have a network connection with its peers.I could find that the transactions are submitted ...
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2answers
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How do other nodes handle the accounts of a deleted node?

In Ethereum Blockchain, the accounts created on one node stay with it and are not replicated into other nodes. If that node is deleted and hence is not a part of that network, then what happen to the ...
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137 views

Refresh Peers from `static-nodes.json` Without Restarting geth

When running geth on a private Ethereum network, is it possible to edit the list of enodes in static-nodes.json and make geth pickup any new enodes in the new version of static-nodes.json without ...
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477 views

Where to place static-nodes.json for geth

I am setting up a private Ethereum network using puppeth whic creates the sealer nodes on various servers. To aid peer discovery, it has been suggested that we include a list of enodes in the file ...
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1answer
37 views

Can non-default port (not 30303) be a reason for the small number of peers?

I have two ethereum full nodes in Rosten network with non-default port (not 30303). One has net.peerCount = 3, the next one has net.peerCount = 0 and I can't sync it more then 24 hours. Also, I have ...
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276 views

How to add peers to a private blockchain network without using IP address?

I have created a private blockchain network and added peers to that network using the admin.addPeers() command. But the problem is, in that method I have to give the local IP address of the system ...
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23 views

What use case do peers have on test net?

Hi I am new to Ethereum (and Blockchain) and am trying to set up testnet using Geth to learn about about the intricacies of Blockchain. So this might be a trivial question: A lot of tutorials out ...
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109 views

How many peers can an Ethereum node have?

Is there any maximum limit on the number of peers an Ethereum node can have? Does this vary for private and public networks? In case of Bitcoin, is there a limit?
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237 views

How does ethereum bypass the NAT

I wonder, since Ethereum is based on a decentralized p2p network, how does it get through the NAT Firewall? There is no server Ethereum can connect on, so there has to be a way for nodes to accept ...
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3answers
475 views

Is there a way to make geth only allow connections from specified nodes?

I'm setting up a private network with 10 geth nodes for my organization's own use, however I don't want outside nodes to accidentally (or intentionally) connect to our geth nodes. The nodes are hosted ...
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190 views

How to add Peers in Quorum Single Member Blockchain Network in Azure?

I'm using the QSMBN(Quorum Single Member Blockchain Network) provided by Azure, and I'm trying to connect one external node to the quorum network, but when I try to add peer displays this message "...
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Direct connection to some peer

I have pub key of some peer (received it in block's header, it is need for some logic). I need make connection to it to send request. If peers know each other it is not a problem. I catch it like ...
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1answer
20 views

What if I close a wallet program in midst of a transaction?

Suppose I start a transaction in my wallet program (such as Mist or MetaMask). Also suppose the transaction is delayed (for example because of being connected to zero peers) and I exit from the ...
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When to use the slow Ethereum network?

The Ethereum network works very slowly. I often am connected to 0 peers. So what are (GMT) hours when it works the best, for accomplishing a transaction? Also, which week days it work the best? ...
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1answer
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What information is available if you set up a node?

I'm doing a project on blockchain technology where we are supposed to do some kind of measurement and evaluate the result. I've heard that you can set up a Ethereum node and get some kind of ...
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1answer
172 views

web3.admin.addpeers return BigNumber Error

When I using ethconsole to deal with a private chain. I hope it can connects to another node which I get the node information. But the command "web3.admin.addPeer("enode://...@192.168.1.29:30304",...
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Networking - p2p connections through router

This isn't unique to Ethereum per se, but I'm curious how p2p clients (e.g. geth) allow peers to receive messages from the outside world with default router configurations. I have tried running the ...
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2answers
230 views

What would be potential problems with building “private” Ethereum network on AWS?

Suppose I have two EC2 instances on AWS that are running geth nodes. They have the same genesis block and are in synchronization because peering is setup with open port 30303 (by default is for ...
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84 views

Private Network - Ethereum Peers not connecting to LXC Containers nodes

We have 4 Computers with LXC containers installed. We have 4 geth instances running on host PCs and 4 geth instances running on LXC containers. My issue is that the nodes on host PCs and LXC ...
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1answer
235 views

Why is the value of “net.peerCount” keep changing, though, I've ONLY 2 nodes in my Local Private Ethereum Network?

I'm currently setting up Local Private Ethereum Network using Puppeth. And followed the steps provided in tutorial: Provisioning a Local Private Ethereum Network with Puppeth . As per the above ...
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3answers
353 views

How to architect scalable ethereum blockchain network?

I have set up the private ethereum block by doing the following steps. 1- Initialised same genesis.json on 2 systems. 2- Started geth console by using same network id. 3- Added these two systems (...
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Do peers rotate?

Once you have 25 peers, do you keep those same 25 peers (assuming the machines stay up)? I'm having a problem (discussed other places) that would be more easily explained if part of the peer ...
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0answers
110 views

What would cause nodes on a private blockchain to gradually lose connectivity?

I have a private blockchain with 6 nodes, and a total of three miners. When I initialize the blockchain everything looks great and the nodes find each other starting with the bootnodes. After about ...
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1answer
101 views

What is the best or recommended method for updating geth to include all my custom blockchain parameters?

I have a blockchain based on Ethereum, I will call it my testnet for now and I have a few nodes running and mining. All seems well so far, I am currently starting geth with several parameters If I ...
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533 views

How to connect peers which are on different computers in geth on private network?

I am trying to setup a private network and trying to connect peers. Currently I'm trying it on my laptop and virtual machine(VM) runing on the same laptop (both of them are connected to internet). I ...
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289 views

Build secure private ethereum blockchain with geth!

I have read on the StackExchange how to build a private blockchain in LAN with private IPs and geth clients. As I understood to communicate in lan the geth peers need for P2P communication the form ...
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137 views

Does ethereum or blockchain blocks in general use any specific format to store data on local instant?

For example if I store a text file locally it will have .txt extension similarly .jpg in case of images or .mp4 in case of video, so what it would be in case of block record. Can files be located on ...