diff --git a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTask.java b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTask.java
index 244908c921..7ae78754b2 100644
--- a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTask.java
+++ b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTask.java
@@ -15,6 +15,7 @@
 package org.hyperledger.besu.ethereum.eth.manager.peertask;
 
 import org.hyperledger.besu.ethereum.p2p.rlpx.wire.MessageData;
+import org.hyperledger.besu.ethereum.p2p.rlpx.wire.SubProtocol;
 
 import java.util.Collection;
 
@@ -29,7 +30,7 @@ public interface PeerTask<T> {
    *
    * @return the SubProtocol used for this PeerTask
    */
-  String getSubProtocol();
+  SubProtocol getSubProtocol();
 
   /**
    * Gets the minimum required block number for a peer to have to successfully execute this task
diff --git a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutor.java b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutor.java
index 76d5eb3839..bab1a1f0bd 100644
--- a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutor.java
+++ b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutor.java
@@ -18,6 +18,7 @@ import org.hyperledger.besu.ethereum.eth.manager.EthPeer;
 import org.hyperledger.besu.ethereum.mainnet.ProtocolSpec;
 import org.hyperledger.besu.ethereum.p2p.rlpx.connections.PeerConnection;
 import org.hyperledger.besu.ethereum.p2p.rlpx.wire.MessageData;
+import org.hyperledger.besu.ethereum.p2p.rlpx.wire.SubProtocol;
 import org.hyperledger.besu.metrics.BesuMetricCategory;
 import org.hyperledger.besu.plugin.services.MetricsSystem;
 import org.hyperledger.besu.plugin.services.metrics.LabelledMetric;
@@ -95,11 +96,11 @@ public class PeerTaskExecutor {
     do {
       try {
 
-        T result ;
+        T result;
         try (final OperationTimer.TimingContext timingContext =
             requestTimer.labels(peerTask.getClass().getSimpleName()).startTimer()) {
           MessageData responseMessageData =
-                  requestSender.sendRequest(peerTask.getSubProtocol(), requestMessageData, peer);
+              requestSender.sendRequest(peerTask.getSubProtocol(), requestMessageData, peer);
 
           result = peerTask.parseResponse(responseMessageData);
         }
@@ -155,7 +156,7 @@ public class PeerTaskExecutor {
     return ethPeer.chainState().getEstimatedHeight() >= requiredHeight;
   }
 
-  private static boolean isPeerProtocolSuitable(final EthPeer ethPeer, final String protocol) {
-    return ethPeer.getProtocolName().equals(protocol);
+  private static boolean isPeerProtocolSuitable(final EthPeer ethPeer, final SubProtocol protocol) {
+    return ethPeer.getProtocolName().equals(protocol.getName());
   }
 }
diff --git a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSender.java b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSender.java
index 77ff5e7251..7a597eca8e 100644
--- a/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSender.java
+++ b/ethereum/eth/src/main/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSender.java
@@ -18,6 +18,7 @@ import org.hyperledger.besu.ethereum.eth.manager.EthPeer;
 import org.hyperledger.besu.ethereum.eth.manager.RequestManager.ResponseStream;
 import org.hyperledger.besu.ethereum.p2p.rlpx.connections.PeerConnection;
 import org.hyperledger.besu.ethereum.p2p.rlpx.wire.MessageData;
+import org.hyperledger.besu.ethereum.p2p.rlpx.wire.SubProtocol;
 
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
@@ -38,13 +39,13 @@ public class PeerTaskRequestSender {
   }
 
   public MessageData sendRequest(
-      final String subProtocol, final MessageData requestMessageData, final EthPeer ethPeer)
+      final SubProtocol subProtocol, final MessageData requestMessageData, final EthPeer ethPeer)
       throws PeerConnection.PeerNotConnected,
           ExecutionException,
           InterruptedException,
           TimeoutException {
     ResponseStream responseStream =
-        ethPeer.send(requestMessageData, subProtocol, ethPeer.getConnection());
+        ethPeer.send(requestMessageData, subProtocol.getName(), ethPeer.getConnection());
     final CompletableFuture<MessageData> responseMessageDataFuture = new CompletableFuture<>();
     responseStream.then(
         (boolean streamClosed, MessageData message, EthPeer peer) -> {
diff --git a/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutorTest.java b/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutorTest.java
index 930f4325b6..413b68f77c 100644
--- a/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutorTest.java
+++ b/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskExecutorTest.java
@@ -18,6 +18,7 @@ import org.hyperledger.besu.ethereum.eth.manager.EthPeer;
 import org.hyperledger.besu.ethereum.mainnet.ProtocolSpec;
 import org.hyperledger.besu.ethereum.p2p.rlpx.connections.PeerConnection;
 import org.hyperledger.besu.ethereum.p2p.rlpx.wire.MessageData;
+import org.hyperledger.besu.ethereum.p2p.rlpx.wire.SubProtocol;
 import org.hyperledger.besu.metrics.noop.NoOpMetricsSystem;
 
 import java.util.Collections;
@@ -39,6 +40,7 @@ public class PeerTaskExecutorTest {
   private @Mock PeerTaskRequestSender requestSender;
   private @Mock ProtocolSpec protocolSpec;
   private @Mock PeerTask<Object> peerTask;
+  private @Mock SubProtocol subprotocol;
   private @Mock MessageData requestMessageData;
   private @Mock MessageData responseMessageData;
   private @Mock EthPeer ethPeer;
@@ -66,12 +68,13 @@ public class PeerTaskExecutorTest {
           InterruptedException,
           TimeoutException,
           InvalidPeerTaskResponseException {
-    String subprotocol = "subprotocol";
+
     Object responseObject = new Object();
 
     Mockito.when(peerTask.getRequestMessage()).thenReturn(requestMessageData);
     Mockito.when(peerTask.getPeerTaskBehaviors()).thenReturn(Collections.emptyList());
     Mockito.when(peerTask.getSubProtocol()).thenReturn(subprotocol);
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
     Mockito.when(requestSender.sendRequest(subprotocol, requestMessageData, ethPeer))
         .thenReturn(responseMessageData);
     Mockito.when(peerTask.parseResponse(responseMessageData)).thenReturn(responseObject);
@@ -93,7 +96,6 @@ public class PeerTaskExecutorTest {
           InterruptedException,
           TimeoutException,
           InvalidPeerTaskResponseException {
-    String subprotocol = "subprotocol";
     Object responseObject = new Object();
     int requestMessageDataCode = 123;
 
@@ -102,6 +104,7 @@ public class PeerTaskExecutorTest {
         .thenReturn(List.of(PeerTaskBehavior.RETRY_WITH_SAME_PEER));
 
     Mockito.when(peerTask.getSubProtocol()).thenReturn(subprotocol);
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
     Mockito.when(requestSender.sendRequest(subprotocol, requestMessageData, ethPeer))
         .thenThrow(new TimeoutException())
         .thenReturn(responseMessageData);
@@ -125,11 +128,11 @@ public class PeerTaskExecutorTest {
           ExecutionException,
           InterruptedException,
           TimeoutException {
-    String subprotocol = "subprotocol";
 
     Mockito.when(peerTask.getRequestMessage()).thenReturn(requestMessageData);
     Mockito.when(peerTask.getPeerTaskBehaviors()).thenReturn(Collections.emptyList());
     Mockito.when(peerTask.getSubProtocol()).thenReturn(subprotocol);
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
     Mockito.when(requestSender.sendRequest(subprotocol, requestMessageData, ethPeer))
         .thenThrow(new PeerConnection.PeerNotConnected(""));
 
@@ -147,12 +150,12 @@ public class PeerTaskExecutorTest {
           ExecutionException,
           InterruptedException,
           TimeoutException {
-    String subprotocol = "subprotocol";
     int requestMessageDataCode = 123;
 
     Mockito.when(peerTask.getRequestMessage()).thenReturn(requestMessageData);
     Mockito.when(peerTask.getPeerTaskBehaviors()).thenReturn(Collections.emptyList());
     Mockito.when(peerTask.getSubProtocol()).thenReturn(subprotocol);
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
     Mockito.when(requestSender.sendRequest(subprotocol, requestMessageData, ethPeer))
         .thenThrow(new TimeoutException());
     Mockito.when(requestMessageData.getCode()).thenReturn(requestMessageDataCode);
@@ -173,11 +176,11 @@ public class PeerTaskExecutorTest {
           InterruptedException,
           TimeoutException,
           InvalidPeerTaskResponseException {
-    String subprotocol = "subprotocol";
 
     Mockito.when(peerTask.getRequestMessage()).thenReturn(requestMessageData);
     Mockito.when(peerTask.getPeerTaskBehaviors()).thenReturn(Collections.emptyList());
     Mockito.when(peerTask.getSubProtocol()).thenReturn(subprotocol);
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
     Mockito.when(requestSender.sendRequest(subprotocol, requestMessageData, ethPeer))
         .thenReturn(responseMessageData);
     Mockito.when(peerTask.parseResponse(responseMessageData))
@@ -202,7 +205,6 @@ public class PeerTaskExecutorTest {
           TimeoutException,
           InvalidPeerTaskResponseException,
           NoAvailablePeerException {
-    String subprotocol = "subprotocol";
     Object responseObject = new Object();
 
     Mockito.when(peerSelector.getPeer(Mockito.any(Predicate.class))).thenReturn(ethPeer);
@@ -210,6 +212,7 @@ public class PeerTaskExecutorTest {
     Mockito.when(peerTask.getRequestMessage()).thenReturn(requestMessageData);
     Mockito.when(peerTask.getPeerTaskBehaviors()).thenReturn(Collections.emptyList());
     Mockito.when(peerTask.getSubProtocol()).thenReturn(subprotocol);
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
     Mockito.when(requestSender.sendRequest(subprotocol, requestMessageData, ethPeer))
         .thenReturn(responseMessageData);
     Mockito.when(peerTask.parseResponse(responseMessageData)).thenReturn(responseObject);
@@ -233,7 +236,6 @@ public class PeerTaskExecutorTest {
           TimeoutException,
           InvalidPeerTaskResponseException,
           NoAvailablePeerException {
-    String subprotocol = "subprotocol";
     Object responseObject = new Object();
     int requestMessageDataCode = 123;
     EthPeer peer2 = Mockito.mock(EthPeer.class);
@@ -246,6 +248,7 @@ public class PeerTaskExecutorTest {
     Mockito.when(peerTask.getPeerTaskBehaviors())
         .thenReturn(List.of(PeerTaskBehavior.RETRY_WITH_OTHER_PEERS));
     Mockito.when(peerTask.getSubProtocol()).thenReturn(subprotocol);
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
     Mockito.when(requestSender.sendRequest(subprotocol, requestMessageData, ethPeer))
         .thenThrow(new TimeoutException());
     Mockito.when(requestMessageData.getCode()).thenReturn(requestMessageDataCode);
diff --git a/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSenderTest.java b/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSenderTest.java
index 8bc52604db..4041fb6303 100644
--- a/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSenderTest.java
+++ b/ethereum/eth/src/test/java/org/hyperledger/besu/ethereum/eth/manager/peertask/PeerTaskRequestSenderTest.java
@@ -18,6 +18,7 @@ import org.hyperledger.besu.ethereum.eth.manager.EthPeer;
 import org.hyperledger.besu.ethereum.eth.manager.RequestManager;
 import org.hyperledger.besu.ethereum.p2p.rlpx.connections.PeerConnection;
 import org.hyperledger.besu.ethereum.p2p.rlpx.wire.MessageData;
+import org.hyperledger.besu.ethereum.p2p.rlpx.wire.SubProtocol;
 
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
@@ -40,7 +41,7 @@ public class PeerTaskRequestSenderTest {
   @Test
   public void testSendRequest()
       throws PeerConnection.PeerNotConnected, ExecutionException, InterruptedException {
-    String subprotocol = "subprotocol";
+    SubProtocol subprotocol = Mockito.mock(SubProtocol.class);
     MessageData requestMessageData = Mockito.mock(MessageData.class);
     MessageData responseMessageData = Mockito.mock(MessageData.class);
     EthPeer peer = Mockito.mock(EthPeer.class);
@@ -49,7 +50,8 @@ public class PeerTaskRequestSenderTest {
         Mockito.mock(RequestManager.ResponseStream.class);
 
     Mockito.when(peer.getConnection()).thenReturn(peerConnection);
-    Mockito.when(peer.send(requestMessageData, subprotocol, peerConnection))
+    Mockito.when(subprotocol.getName()).thenReturn("subprotocol");
+    Mockito.when(peer.send(requestMessageData, "subprotocol", peerConnection))
         .thenReturn(responseStream);
 
     CompletableFuture<MessageData> actualResponseMessageDataFuture =