def create_discovery_packet(self, dpid, port_num, port_addr):
"""
Build discovery packet
"""
chassis_id = pkt.chassis_id(subtype=pkt.chassis_id.SUB_LOCAL)
chassis_id.id = bytes('dpid:' + hex(long(dpid))[2:-1])
# Maybe this should be a MAC. But a MAC of what? Local port, maybe?
port_id = pkt.port_id(subtype=pkt.port_id.SUB_PORT, id=str(port_num))
ttl = pkt.ttl(ttl=self._ttl)
sysdesc = pkt.system_description()
sysdesc.payload = bytes('dpid:' + hex(long(dpid))[2:-1])
discovery_packet = pkt.lldp()
discovery_packet.tlvs.append(chassis_id)
discovery_packet.tlvs.append(port_id)
discovery_packet.tlvs.append(ttl)
discovery_packet.tlvs.append(sysdesc)
discovery_packet.tlvs.append(pkt.end_tlv())
eth = pkt.ethernet(type=pkt.ethernet.LLDP_TYPE)
eth.src = port_addr
eth.dst = pkt.ETHERNET.NDP_MULTICAST
eth.payload = discovery_packet
po = of.ofp_packet_out(action=of.ofp_action_output(port=port_num))
po.data = eth.pack()
return po.pack()
def _create_discovery_packet(dpid, port_num, port_addr, ttl):
"""
Build discovery packet
"""
chassis_id = pkt.chassis_id(subtype=pkt.chassis_id.SUB_LOCAL)
chassis_id.id = ('dpid:' + hex(int(dpid))[2:]).encode()
# Maybe this should be a MAC. But a MAC of what? Local port, maybe?
port_id = pkt.port_id(subtype=pkt.port_id.SUB_PORT, id=str(port_num))
ttl = pkt.ttl(ttl=ttl)
sysdesc = pkt.system_description()
sysdesc.payload = ('dpid:' + hex(int(dpid))[2:]).encode()
discovery_packet = pkt.lldp()
discovery_packet.tlvs.append(chassis_id)
discovery_packet.tlvs.append(port_id)
discovery_packet.tlvs.append(ttl)
discovery_packet.tlvs.append(sysdesc)
discovery_packet.tlvs.append(pkt.end_tlv())
eth = pkt.ethernet(type=pkt.ethernet.LLDP_TYPE)
eth.src = port_addr
eth.dst = pkt.ETHERNET.NDP_MULTICAST
eth.payload = discovery_packet
return eth
def create_discovery_packet (self, dpid):
"""
Build discovery packet
"""
chassis_id = pkt.chassis_id(subtype=pkt.chassis_id.SUB_LOCAL)
chassis_id.id = bytes('dpid:' + hex(long(dpid))[2:-1])
# Maybe this should be a MAC. But a MAC of what? Local port, maybe?
port_id = pkt.port_id(subtype=pkt.port_id.SUB_PORT, id=str(255))
ttl = pkt.ttl(ttl = 120)
sysdesc = pkt.system_description()
sysdesc.payload = bytes('dpid:' + hex(long(dpid))[2:-1])
discovery_packet = pkt.lldp()
discovery_packet.tlvs.append(chassis_id)
discovery_packet.tlvs.append(port_id)
discovery_packet.tlvs.append(ttl)
discovery_packet.tlvs.append(sysdesc)
discovery_packet.tlvs.append(pkt.end_tlv())
eth = pkt.ethernet(type=pkt.ethernet.LLDP_TYPE)
eth.src = "0x000000"
eth.dst = pkt.ETHERNET.NDP_MULTICAST
eth.payload = discovery_packet
#---------------Made changes-----------------------
actionSet = []
selectedDpid = dpid
#print'Sending PacketOut to SWitch', selectedDpid
#:need to for all ports in one swtich
for p in _portInfo:
#packetOut floods exclueding the ingress (secure port to Controller)
if p.port_num!=65534 and p.dpid == selectedDpid:
actionSet.append(of.ofp_action_dl_addr.set_src(p.port_addr))
actionSet.append(of.ofp_action_output(port=p.port_num))
#print'actionSet-------->',actionSet
po = of.ofp_packet_out(action = actionSet)
po.data = eth.pack()
return po.pack()
def _create_lldp_packet(self, dpid, port_num, port_addr):
""" Creating LLDP packet """
chassis_id = pkt.chassis_id(subtype=pkt.chassis_id.SUB_CHASSIS, id=str(dpid))
port_id = pkt.port_id(subtype=pkt.port_id.SUB_PORT, id=str(port_num))
ttl = pkt.ttl(ttl=1)
lldp_packet = pkt.lldp()
lldp_packet.tlvs.append(chassis_id)
lldp_packet.tlvs.append(port_id)
lldp_packet.tlvs.append(ttl)
lldp_packet.tlvs.append(pkt.end_tlv())
eth = pkt.ethernet(type=pkt.ethernet.LLDP_TYPE)
eth.src = port_addr
eth.dst = pkt.ETHERNET.LLDP_MULTICAST
eth.payload = lldp_packet
po = of.ofp_packet_out(action=of.ofp_action_output(port=port_num))
po.data = eth.pack()
return po.pack()