diff --git a/api/v1alpha1/loadbalancer_types.go b/api/v1alpha1/loadbalancer_types.go
index 795390bb525..d4912aebd4a 100644
--- a/api/v1alpha1/loadbalancer_types.go
+++ b/api/v1alpha1/loadbalancer_types.go
@@ -66,6 +66,15 @@ type ConsistentHash struct {
 	//
 	// +optional
 	Header *Header `json:"header,omitempty"`
+
+	// The table size for consistent hashing, must be prime number limited to 5000011.
+	//
+	// +kubebuilder:validation:Minimum=2
+	// +kubebuilder:validation:Maximum=5000011
+	// +kubebuilder:default=65537
+	// +optional
+	// +notImplementedHide
+	TableSize *uint64 `json:"tableSize,omitempty"`
 }
 
 // Header defines the header hashing configuration for consistent hash based
diff --git a/api/v1alpha1/zz_generated.deepcopy.go b/api/v1alpha1/zz_generated.deepcopy.go
index 5dc25960173..c584ae2d62a 100644
--- a/api/v1alpha1/zz_generated.deepcopy.go
+++ b/api/v1alpha1/zz_generated.deepcopy.go
@@ -783,6 +783,11 @@ func (in *ConsistentHash) DeepCopyInto(out *ConsistentHash) {
 		*out = new(Header)
 		**out = **in
 	}
+	if in.TableSize != nil {
+		in, out := &in.TableSize, &out.TableSize
+		*out = new(uint64)
+		**out = **in
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ConsistentHash.
diff --git a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
index 6f5b369ce73..37aabbbefc1 100644
--- a/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
+++ b/charts/gateway-helm/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
@@ -422,6 +422,14 @@ spec:
                         required:
                         - name
                         type: object
+                      tableSize:
+                        default: 65537
+                        description: The table size for consistent hashing, must be
+                          prime number limited to 5000011.
+                        format: int64
+                        maximum: 5000011
+                        minimum: 2
+                        type: integer
                       type:
                         description: ConsistentHashType defines the type of input
                           to hash on. Valid Type values are "SourceIP" or "Header".