diff --git a/internal/pkg/core/l2oam/msg_best_effort_rate_test.go b/internal/pkg/core/l2oam/msg_best_effort_rate_test.go
new file mode 100644
index 0000000..25bfb49
--- /dev/null
+++ b/internal/pkg/core/l2oam/msg_best_effort_rate_test.go
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2020-present Open Networking Foundation
+
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+
+ * http://www.apache.org/licenses/LICENSE-2.0
+
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package l2oam
+
+import (
+	"encoding/binary"
+	"reflect"
+	"testing"
+
+	"github.com/google/gopacket"
+)
+
+func TestGenerateBestEffortRate(t *testing.T) {
+	type args struct {
+		ecvalue        []byte
+		trafficProfile []byte
+	}
+	tests := []struct {
+		name string
+		args args
+		want gopacket.SerializableLayer
+	}{
+		// TODO: Add test cases.
+		{
+			name: "GenerateBestEffortRate-1",
+			args: args{
+				ecvalue:        []byte{0x00, 0x4c, 0x4b, 0x40},
+				trafficProfile: []byte{0x00, 0x00, 0x00, 0x01},
+			},
+			want: &TOAMSetRequest{
+				// IEEE 1904.2
+				Opcode: 0x03,
+				// OAM Protocol
+				Flags:      0x0050,
+				OAMPDUCode: 0xfe,
+				OUId:       []byte{0x2a, 0xea, 0x15},
+				// TiBit OLT Management Interface
+				TOMIOpcode: 0x03,
+				// Correlation Tag
+				CTBranch:   0x0c,
+				CTType:     0x0c7a,
+				CTLength:   4,
+				CTInstance: getOltInstance() + 1,
+				// Object Context
+				OCBranch:   0x0c,
+				OCType:     0x070f,
+				OCLength:   4,
+				OCInstance: binary.BigEndian.Uint32([]byte{0x00, 0x00, 0x00, 0x01}),
+				// Vc
+				VcBranch: 0x7f,
+				VcLeaf:   0x0008,
+				VcLength: 5, //5
+				// EC
+				ECLength: 4,                              //4
+				ECValue:  []byte{0x00, 0x4c, 0x4b, 0x40}, //[]byte{0x00, 0x4c, 0x4b, 0x40}
+				// End
+				EndBranch: 0x00,
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := GenerateBestEffortRate(tt.args.ecvalue, tt.args.trafficProfile); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("GenerateBestEffortRate() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}