diff --git a/libp2p/relay/circuit_v2/config.py b/libp2p/relay/circuit_v2/config.py
index 70046c6a..8eafbe91 100644
--- a/libp2p/relay/circuit_v2/config.py
+++ b/libp2p/relay/circuit_v2/config.py
@@ -46,18 +46,8 @@ MAX_AUTO_RELAY_ATTEMPTS = 3
 RESERVATION_REFRESH_THRESHOLD = 0.8  # Refresh at 80% of TTL
 MAX_CONCURRENT_RESERVATIONS = 2
 
-# Shared timeout constants (used across modules)
-STREAM_READ_TIMEOUT = 15  # seconds
-STREAM_WRITE_TIMEOUT = 15  # seconds
-STREAM_CLOSE_TIMEOUT = 10  # seconds
-DIAL_TIMEOUT = 10  # seconds
-
-# NAT reachability timeout
-REACHABILITY_TIMEOUT = 10  # seconds
-
-# Relay roles enum -----------------------------------------------------------
-
 
+# Relay roles enum
 class RelayRole(Flag):
     """
     Bit-flag enum that captures the three possible relay capabilities.
@@ -72,6 +62,7 @@ class RelayRole(Flag):
     CLIENT = auto()  # Dial through existing relays ("client")
 
 
+@dataclass
 class RelayConfig:
     """Configuration for Circuit Relay v2."""
 
diff --git a/libp2p/relay/circuit_v2/dcutr.py b/libp2p/relay/circuit_v2/dcutr.py
index a67ddd5e..2cece5d2 100644
--- a/libp2p/relay/circuit_v2/dcutr.py
+++ b/libp2p/relay/circuit_v2/dcutr.py
@@ -39,12 +39,6 @@ from libp2p.tools.async_service import (
     Service,
 )
 
-from .config import (
-    DIAL_TIMEOUT,
-    STREAM_READ_TIMEOUT,
-    STREAM_WRITE_TIMEOUT,
-)
-
 logger = logging.getLogger(__name__)
 
 # Protocol ID for DCUtR
@@ -53,6 +47,11 @@ PROTOCOL_ID = TProtocol("/libp2p/dcutr")
 # Maximum message size for DCUtR (4KiB as per spec)
 MAX_MESSAGE_SIZE = 4 * 1024
 
+# Timeouts
+STREAM_READ_TIMEOUT = 30  # seconds
+STREAM_WRITE_TIMEOUT = 30  # seconds
+DIAL_TIMEOUT = 10  # seconds
+
 # Maximum number of hole punch attempts per peer
 MAX_HOLE_PUNCH_ATTEMPTS = 5
 
diff --git a/libp2p/relay/circuit_v2/discovery.py b/libp2p/relay/circuit_v2/discovery.py
index 798eaa3e..45775647 100644
--- a/libp2p/relay/circuit_v2/discovery.py
+++ b/libp2p/relay/circuit_v2/discovery.py
@@ -31,9 +31,6 @@ from libp2p.tools.async_service import (
     Service,
 )
 
-from .config import (
-    DEFAULT_DISCOVERY_INTERVAL as CFG_DISCOVERY_INTERVAL,
-)
 from .pb.circuit_pb2 import (
     HopMessage,
 )
@@ -46,9 +43,9 @@ from .protocol_buffer import (
 
 logger = logging.getLogger("libp2p.relay.circuit_v2.discovery")
 
-# Constants (single-source-of-truth)
-DEFAULT_DISCOVERY_INTERVAL = CFG_DISCOVERY_INTERVAL
-MAX_RELAYS_TO_TRACK = 10  # Still discovery-specific
+# Constants
+MAX_RELAYS_TO_TRACK = 10
+DEFAULT_DISCOVERY_INTERVAL = 60  # seconds
 STREAM_TIMEOUT = 10  # seconds
 PEER_PROTOCOL_TIMEOUT = 5  # seconds
 
diff --git a/libp2p/relay/circuit_v2/protocol.py b/libp2p/relay/circuit_v2/protocol.py
index ae852a1f..3c378897 100644
--- a/libp2p/relay/circuit_v2/protocol.py
+++ b/libp2p/relay/circuit_v2/protocol.py
@@ -43,9 +43,6 @@ from .config import (
     DEFAULT_MAX_CIRCUIT_CONNS,
     DEFAULT_MAX_CIRCUIT_DURATION,
     DEFAULT_MAX_RESERVATIONS,
-    STREAM_CLOSE_TIMEOUT,
-    STREAM_READ_TIMEOUT,
-    STREAM_WRITE_TIMEOUT,
 )
 from .pb.circuit_pb2 import (
     HopMessage,
@@ -75,7 +72,7 @@ class Pipe(Enum):
     DST_TO_SRC = auto()
 
 
-# Default limits for relay resources (single source of truth)
+# Default limits for relay resources
 DEFAULT_RELAY_LIMITS = RelayLimits(
     duration=DEFAULT_MAX_CIRCUIT_DURATION,
     data=DEFAULT_MAX_CIRCUIT_BYTES,
@@ -83,6 +80,10 @@ DEFAULT_RELAY_LIMITS = RelayLimits(
     max_reservations=DEFAULT_MAX_RESERVATIONS,
 )
 
+# Stream operation timeouts
+STREAM_READ_TIMEOUT = 15  # seconds
+STREAM_WRITE_TIMEOUT = 15  # seconds
+STREAM_CLOSE_TIMEOUT = 10  # seconds
 MAX_READ_RETRIES = 5  # Maximum number of read retries
 
 
diff --git a/libp2p/relay/circuit_v2/resources.py b/libp2p/relay/circuit_v2/resources.py
index bd5d5fe0..d621990d 100644
--- a/libp2p/relay/circuit_v2/resources.py
+++ b/libp2p/relay/circuit_v2/resources.py
@@ -97,7 +97,7 @@ class Reservation:
         """Check if the reservation has expired."""
         return time.time() > self.expires_at
 
-    # Expose a friendly status enum --------------------------------------
+    # Expose a friendly status enum
 
     @property
     def status(self) -> ReservationStatus: