Network

To synchronize the state, the node needs to establish connections with other nodes that have already joined the network. Ensure that port 8084 is open and set up an external address for node discovery.

Edit the node configuration .yaml file to include peer nodes for state synchronization. Add the following lines to the node's configuration, based on the network you'd like to connect to:

Testnet
Devnet

    p2p-config:
        seed-peers:
        - address: /dns/access-0.r.testnet.iota.cafe/udp/8084
          peer-id: 46064108d0b689ed89d1f44153e532bb101ce8f8ca3a3d01ab991d4dea122cfc
        - address: /dns/access-1.r.testnet.iota.cafe/udp/8084
          peer-id: 8ffd25fa4e86c30c3f8da7092695e8a103462d7a213b815d77d6da7f0a2a52f5

    p2p-config:
        seed-peers:
        - address: /dns/access-0.r.devnet.iota.cafe/udp/8084
          peer-id: 01589ac910a5993f80fbc34a6e0c8b2041ddc5526a951c838df3037e11ab0188
        - address: /dns/access-1.r.devnet.iota.cafe/udp/8084
          peer-id: 32875c547ea3b44fa08a711646cedb70fa0c97959d236578131505da09723add

Connectivity

The IOTA node uses the following ports by default:

Protocol/Port	Reachability	Purpose
TCP/8080	Inbound	Validator/transaction interface
TCP/8081	Inbound/Outbound	Consensus interface
UDP/8084	Inbound/Outbound	Peer-to-peer state sync interface
TCP/8443	Outbound	Metrics pushing
TCP/9184	Localhost	Metrics scraping

To run a validator successfully, it is critical that ports 8080-8084 are open as outlined, including the specific protocol (TCP/UDP).

Connectivity​

Connectivity