diff --git a/mixnet/client/src/config.rs b/mixnet/client/src/config.rs
index 16ca684d..9cde7189 100644
--- a/mixnet/client/src/config.rs
+++ b/mixnet/client/src/config.rs
@@ -1,4 +1,4 @@
-use std::net::SocketAddr;
+use std::{net::SocketAddr, time::Duration};
 
 use futures::{stream, StreamExt};
 use mixnet_topology::MixnetTopology;
@@ -11,7 +11,9 @@ pub struct MixnetClientConfig {
     pub mode: MixnetClientMode,
     pub topology: MixnetTopology,
     pub connection_pool_size: usize,
+    #[serde(default = "MixnetClientConfig::default_max_retries")]
     pub max_retries: usize,
+    #[serde(default = "MixnetClientConfig::default_retry_delay")]
     pub retry_delay: std::time::Duration,
 }
 
@@ -44,3 +46,13 @@ impl MixnetClientMode {
         }
     }
 }
+
+impl MixnetClientConfig {
+    const fn default_max_retries() -> usize {
+        3
+    }
+
+    const fn default_retry_delay() -> Duration {
+        Duration::from_secs(5)
+    }
+}
diff --git a/nodes/nomos-node/config.yaml b/nodes/nomos-node/config.yaml
index 88a0a787..5e31a282 100644
--- a/nodes/nomos-node/config.yaml
+++ b/nodes/nomos-node/config.yaml
@@ -7,9 +7,13 @@ consensus:
   fountain_settings: null
   overlay_settings:
     nodes: [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]]
-    leader_super_majority_threshold: 1
+    number_of_committees: 1
+    current_leader: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
     leader:
       cur: 0
+    committee_membership: !Sad
+      entropy: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+
 network:
   backend:
     host: 0.0.0.0
@@ -49,3 +53,12 @@ http:
   backend:
     address: 0.0.0.0:8080
     cors_origins: []
+
+da:
+  da_protocol:
+    num_attestations: 1
+  backend:
+    max_capacity: 10
+    evicting_period: 
+      secs: 3600
+      nanos: 0
diff --git a/testnet/config.yaml b/testnet/config.yaml
index d60e6c86..5e31a282 100644
--- a/testnet/config.yaml
+++ b/testnet/config.yaml
@@ -7,9 +7,13 @@ consensus:
   fountain_settings: null
   overlay_settings:
     nodes: [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]]
-    leader_super_majority_threshold: 1
+    number_of_committees: 1
+    current_leader: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
     leader:
       cur: 0
+    committee_membership: !Sad
+      entropy: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+
 network:
   backend:
     host: 0.0.0.0
@@ -19,14 +23,28 @@ network:
     discV5BootstrapNodes: []
     initial_peers: []
     relayTopics: []
+    # Mixclient configuration to communicate with mixnodes.
+    # The libp2p network backend always requires this mixclient configuration
+    # (cannot be disabled for now).
     mixnet_client:
+      # A mixclient mode. For details, see the documentation of the "mixnet" crate.
+      # - Sender
+      # - !SenderReceiver [mixnode_client_listen_address]
       mode: Sender
+      # A mixnet topology, which contains the information of all mixnodes in the mixnet.
+      # (The topology is static for now.)
       topology:
+        # Each mixnet layer consists of a list of mixnodes.
         layers:
          - nodes:
-            - address: 127.0.0.1:7777
+            - address: 127.0.0.1:7777  # A listen address of the mixnode
+              # A ed25519 public key for encrypting Sphinx packets for the mixnode
               public_key: "0000000000000000000000000000000000000000000000000000000000000000"
+      # A max number of connections that will stay connected to mixnodes in the first mixnet layer.
       connection_pool_size: 255
+    # A range of total delay that will be set to each Sphinx packets
+    # sent to the mixnet for timing obfuscation.
+    # Panics if start > end.
     mixnet_delay:
       start: "0ms"
       end: "0ms"
@@ -35,3 +53,12 @@ http:
   backend:
     address: 0.0.0.0:8080
     cors_origins: []
+
+da:
+  da_protocol:
+    num_attestations: 1
+  backend:
+    max_capacity: 10
+    evicting_period: 
+      secs: 3600
+      nanos: 0