diff --git a/src/network/error.rs b/src/network/error.rs
new file mode 100644
index 000000000..d255cb043
--- /dev/null
+++ b/src/network/error.rs
@@ -0,0 +1,41 @@
+use io::IoError;
+use rlp::*;
+
+#[derive(Debug, Copy, Clone)]
+pub enum DisconnectReason
+{
+	DisconnectRequested,
+	//TCPError,
+	//BadProtocol,
+	UselessPeer,
+	//TooManyPeers,
+	//DuplicatePeer,
+	//IncompatibleProtocol,
+	//NullIdentity,
+	//ClientQuit,
+	//UnexpectedIdentity,
+	//LocalIdentity,
+	//PingTimeout,
+}
+
+#[derive(Debug)]
+pub enum NetworkError {
+	Auth,
+	BadProtocol,
+	PeerNotFound,
+	Disconnect(DisconnectReason),
+	Io(IoError),
+}
+
+impl From<DecoderError> for NetworkError {
+	fn from(_err: DecoderError) -> NetworkError {
+		NetworkError::Auth
+	}
+}
+
+impl From<IoError> for NetworkError {
+	fn from(err: IoError) -> NetworkError {
+		NetworkError::Io(err)
+	}
+}
+
diff --git a/src/network/node.rs b/src/network/node.rs
new file mode 100644
index 000000000..5c08e0a66
--- /dev/null
+++ b/src/network/node.rs
@@ -0,0 +1,83 @@
+use std::net::{SocketAddr, ToSocketAddrs};
+use std::hash::{Hash, Hasher};
+use std::str::{FromStr};
+use hash::*;
+use rlp::*;
+use time::Tm;
+use error::*;
+
+/// Node public key
+pub type NodeId = H512;
+
+#[derive(Debug)]
+/// Noe address info
+pub struct NodeEndpoint {
+	/// IP(V4 or V6) address
+	pub address: SocketAddr,
+	/// Address as string (can be host name).
+	pub address_str: String,
+	/// Conneciton port.
+	pub udp_port: u16
+}
+
+impl NodeEndpoint {
+	/// Create endpoint from string. Performs name resolution if given a host name.
+	fn from_str(s: &str) -> Result<NodeEndpoint, UtilError> {
+		let address = s.to_socket_addrs().map(|mut i| i.next());
+		match address {
+			Ok(Some(a)) => Ok(NodeEndpoint {
+				address: a,
+				address_str: s.to_string(),
+				udp_port: a.port()
+			}),
+			Ok(_) => Err(UtilError::AddressResolve(None)),
+			Err(e) => Err(UtilError::AddressResolve(Some(e)))
+		}
+	}
+}
+
+#[derive(PartialEq, Eq, Copy, Clone)]
+pub enum PeerType {
+	Required,
+	Optional
+}
+
+pub struct Node {
+	pub id: NodeId,
+	pub endpoint: NodeEndpoint,
+	pub peer_type: PeerType,
+	pub last_attempted: Option<Tm>,
+}
+
+impl FromStr for Node {
+	type Err = UtilError;
+	fn from_str(s: &str) -> Result<Self, Self::Err> {
+		let (id, endpoint) = if &s[0..8] == "enode://" && s.len() > 136 && &s[136..137] == "@" {
+			(try!(NodeId::from_str(&s[8..136])), try!(NodeEndpoint::from_str(&s[137..])))
+		}
+		else {
+			(NodeId::new(), try!(NodeEndpoint::from_str(s)))
+		};
+
+		Ok(Node {
+			id: id,
+			endpoint: endpoint,
+			peer_type: PeerType::Optional,
+			last_attempted: None,
+		})
+	}
+}
+
+impl PartialEq for Node {
+	fn eq(&self, other: &Self) -> bool {
+		self.id == other.id
+	}
+}
+impl Eq for Node { }
+
+impl Hash for Node {
+	fn hash<H>(&self, state: &mut H) where H: Hasher {
+		self.id.hash(state)
+	}
+}
+