示例#1
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    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()
示例#2
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  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()
示例#3
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def send_discovery_packet(event):
	""" Sends the discovery packet used to identity the links present between the switches"""
	for p in event.ofp.ports:
		chass_id = event.dpid
		src = str(p.hw_addr)

		portno = p.port_no
		chassis_id = pktt.chassis_id(subtype=pktt.chassis_id.SUB_LOCAL, id = str(chass_id))
		
		port_id = pktt.port_id(subtype = pktt.port_id.SUB_PORT, id = str(portno))
		ttl = pktt.ttl(ttl = lldp_ttl)


		discovery_packet = pktt.lldp()
		discovery_packet.tlvs.append(chassis_id)
		discovery_packet.tlvs.append(port_id)
		discovery_packet.tlvs.append(ttl)
		discovery_packet.tlvs.append(pktt.end_tlv())

		eth = pktt.ethernet(type = pktt.ethernet.LLDP_TYPE)
		eth.src = src
		eth.dst = pktt.ETHERNET.NDP_MULTICAST
		eth.payload = discovery_packet

		pkt = of.ofp_packet_out(action = of.ofp_action_output(port = portno))
                pkt.data = eth.pack()
                event.connection.send(pkt.pack())
示例#4
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  def _create_broadcast_discovery_packet (dpid, port_num, port_addr, ttl):

    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 = 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.ETHER_BROADCAST
    eth.payload = discovery_packet

    return eth
示例#5
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    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
示例#6
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文件: lldp_util.py 项目: wty21cn/srp
    def _create_lldp_packet(self,dpid,port_num,port_addr):
        chassis_id = pkt.chassis_id(subtype=pkt.chassis_id.SUB_LOCAL)
        chassis_id.id = bytes('dpid:' + hex(long(dpid))[2:-1])

        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

        msg = of.ofp_packet_out(action=of.ofp_action_output(port=port_num))
        msg.data = eth.pack()
        return msg.pack()
示例#7
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 def _discover_neighbors(self):
   # Send an LLDP packet to discover switch links.  LLDP lets us include the switch and port identity on this side,
   # so when we receive the packet on the other side we know about both ends of the link.
   ports = filter(lambda x: x.port_no <= of.OFPP_MAX, self.connection.ports.itervalues())
   for port in ports:
     lldp_pkt = lldp()
     lldp_pkt.add_tlv(chassis_id(subtype = chassis_id.SUB_MAC, id = port.hw_addr.toRaw()))
     lldp_pkt.add_tlv(port_id(subtype = port_id.SUB_PORT, id = str(port.port_no)))
     lldp_pkt.add_tlv(ttl(ttl = SpanningTreeSwitch.LLDP_TTL))
     lldp_pkt.add_tlv(system_description(payload = bytes(self.dpid)))
     lldp_pkt.add_tlv(end_tlv())
     ether_wrapper = ethernet(type = ethernet.LLDP_TYPE, src = port.hw_addr, dst = SpecialMacs.LLDP_BROADCAST, payload = lldp_pkt)
     self._send_packet(ether_wrapper, port.port_no)
   Timer(SpanningTreeSwitch.LLDP_LISTEN_DELAY, self._activate)
示例#8
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  def _discover_neighbors(self):
    LldpSwitch.logger.debug('Discovering neighbors on switch {}.'.format(self.dpid))

    # Send an LLDP packet to discover switch links.  LLDP lets us include the switch
    # and port identity on this side, so when we receive the packet on the other
    # side we know about both ends of the link.
    for port in self._get_discoverable_ports():
      LldpSwitch.logger.debug('Discovering neighbors on switch {} port {}.'.format(self.dpid, port.port_no))
      lldp_pkt = pkt.lldp()
      lldp_pkt.add_tlv(pkt.chassis_id(subtype = pkt.chassis_id.SUB_MAC, id = port.hw_addr.toRaw()))
      lldp_pkt.add_tlv(pkt.port_id(subtype = pkt.port_id.SUB_PORT, id = str(port.port_no)))
      lldp_pkt.add_tlv(pkt.ttl(ttl = LLDP_TTL))
      lldp_pkt.add_tlv(pkt.system_description(payload = bytes(self.dpid)))
      lldp_pkt.add_tlv(pkt.end_tlv())
      ether_wrapper = pkt.ethernet(type = pkt.ethernet.LLDP_TYPE, src = port.hw_addr,
        dst = SpecialMacs.LLDP_BROADCAST, payload = lldp_pkt)
      self._send_packet(ether_wrapper, port.port_no)

    Timer(DISCOVERY_TIMEOUT_PERIOD, self._activate_host_ports)
示例#9
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  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()
示例#11
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    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()