2 files changed, 32 insertions, 1 deletions
diff --git a/packet/bgp/bgp.go b/packet/bgp/bgp.go
index 34bff21a..034a2bcb 100644
--- a/packet/bgp/bgp.go
+++ b/packet/bgp/bgp.go
@@ -1271,7 +1271,7 @@ func ParseRouteDistinguisher(rd string) (RouteDistinguisherInterface, error) {
 	if err != nil {
 		return nil, err
 	}
-	assigned, _ := strconv.Atoi(elems[9])
+	assigned, _ := strconv.Atoi(elems[10])
 	ip := net.ParseIP(elems[1])
 	switch {
 	case ip.To4() != nil:
diff --git a/packet/bgp/bgp_test.go b/packet/bgp/bgp_test.go
index 362c8fb8..8fedf5fe 100644
--- a/packet/bgp/bgp_test.go
+++ b/packet/bgp/bgp_test.go
@@ -812,3 +812,34 @@ func Test_MpReachNLRIWithIPv4PrefixWithIPv6Nexthop(t *testing.T) {
 	// Test serialised value
 	assert.Equal(bufin, bufout)
 }
+
+func Test_ParseRouteDistingusher(t *testing.T) {
+	assert := assert.New(t)
+
+	rd, _ := ParseRouteDistinguisher("100:1000")
+	rdType0, ok := rd.(*RouteDistinguisherTwoOctetAS)
+	if !ok {
+		t.Fatal("Type of RD interface is not RouteDistinguisherTwoOctetAS")
+	}
+
+	assert.Equal(uint16(100), rdType0.Admin)
+	assert.Equal(uint32(1000), rdType0.Assigned)
+
+	rd, _ = ParseRouteDistinguisher("10.0.0.0:100")
+	rdType1, ok := rd.(*RouteDistinguisherIPAddressAS)
+	if !ok {
+		t.Fatal("Type of RD interface is not RouteDistinguisherIPAddressAS")
+	}
+
+	assert.Equal("10.0.0.0", rdType1.Admin.String())
+	assert.Equal(uint16(100), rdType1.Assigned)
+
+	rd, _ = ParseRouteDistinguisher("100.1000:10000")
+	rdType2, ok := rd.(*RouteDistinguisherFourOctetAS)
+	if !ok {
+		t.Fatal("Type of RD interface is not RouteDistinguisherFourOctetAS")
+	}
+
+	assert.Equal(uint32((100<<16)|1000), rdType2.Admin)
+	assert.Equal(uint16(10000), rdType2.Assigned)
+}