public boolean isLldp() {
        return LLDP.contains(this);
    }
@Test
    public void testIsLldp() throws Exception {
        assertFalse(MAC_NORMAL.isLldp());
        assertFalse(MAC_BCAST.isLldp());
        assertFalse(MAC_MCAST.isLldp());
        assertFalse(MAC_MCAST_2.isLldp());
        assertTrue(MAC_LLDP.isLldp());
        assertTrue(MAC_LLDP_2.isLldp());
        assertTrue(MAC_LLDP_3.isLldp());
        assertFalse(MAC_ONOS.isLldp());
    }