示例#1
0
文件: mrt.go 项目: mfeed/gobgp
func NewRib(seq uint32, prefix bgp.AddrPrefixInterface, entries []*RibEntry) *Rib {
	rf := bgp.AfiSafiToRouteFamily(prefix.AFI(), prefix.SAFI())
	return &Rib{
		SequenceNumber: seq,
		Prefix:         prefix,
		Entries:        entries,
		RouteFamily:    rf,
	}
}
示例#2
0
文件: path.go 项目: mfeed/gobgp
//export decode_path
func decode_path(p *C.path) *C.char {
	var buf []byte
	var nlri bgp.AddrPrefixInterface
	if p.nlri.len > 0 {
		buf = []byte(C.GoStringN(p.nlri.value, p.nlri.len))
		nlri = &bgp.IPAddrPrefix{}
		err := nlri.DecodeFromBytes(buf)
		if err != nil {
			return nil
		}
	}
	pattrs := make([]bgp.PathAttributeInterface, 0, int(p.path_attributes_len))
	for i := 0; i < int(p.path_attributes_len); i++ {
		b := C.get_path_attribute(p, C.int(i))
		buf = []byte(C.GoStringN(b.value, b.len))
		pattr, err := bgp.GetPathAttribute(buf)
		if err != nil {
			return nil
		}

		err = pattr.DecodeFromBytes(buf)
		if err != nil {
			return nil
		}

		switch pattr.GetType() {
		case bgp.BGP_ATTR_TYPE_MP_REACH_NLRI:
			mpreach := pattr.(*bgp.PathAttributeMpReachNLRI)
			if len(mpreach.Value) != 1 {
				return nil
			}
			nlri = mpreach.Value[0]
		}

		pattrs = append(pattrs, pattr)
	}
	j, _ := json.Marshal(struct {
		Nlri      bgp.AddrPrefixInterface      `json:"nlri"`
		PathAttrs []bgp.PathAttributeInterface `json:"attrs"`
	}{
		Nlri:      nlri,
		PathAttrs: pattrs,
	})
	return C.CString(string(j))
}
示例#3
0
func NewDestination(nlri bgp.AddrPrefixInterface) *Destination {
	d := &Destination{
		routeFamily:   bgp.AfiSafiToRouteFamily(nlri.AFI(), nlri.SAFI()),
		nlri:          nlri,
		knownPathList: make([]*Path, 0),
		withdrawList:  make([]*Path, 0),
		newPathList:   make([]*Path, 0),
	}
	switch d.routeFamily {
	case bgp.RF_IPv4_UC, bgp.RF_IPv6_UC:
		d.RadixKey = CidrToRadixkey(nlri.String())
	}
	return d
}
示例#4
0
文件: path.go 项目: mfeed/gobgp
func NewPath(source *PeerInfo, nlri bgp.AddrPrefixInterface, isWithdraw bool, pattrs []bgp.PathAttributeInterface, timestamp time.Time, noImplicitWithdraw bool) *Path {
	if !isWithdraw && pattrs == nil {
		log.WithFields(log.Fields{
			"Topic": "Table",
			"Key":   nlri.String(),
			"Peer":  source.Address.String(),
		}).Error("Need to provide patattrs for the path that is not withdraw.")
		return nil
	}

	if nlri != nil && (nlri.SAFI() == bgp.SAFI_FLOW_SPEC_UNICAST || nlri.SAFI() == bgp.SAFI_FLOW_SPEC_VPN) {
		var coms FlowSpecComponents
		var f *bgp.FlowSpecNLRI
		switch nlri.(type) {
		case *bgp.FlowSpecIPv4Unicast:
			f = &nlri.(*bgp.FlowSpecIPv4Unicast).FlowSpecNLRI
		case *bgp.FlowSpecIPv4VPN:
			f = &nlri.(*bgp.FlowSpecIPv4VPN).FlowSpecNLRI
		case *bgp.FlowSpecIPv6Unicast:
			f = &nlri.(*bgp.FlowSpecIPv6Unicast).FlowSpecNLRI
		case *bgp.FlowSpecIPv6VPN:
			f = &nlri.(*bgp.FlowSpecIPv6VPN).FlowSpecNLRI
		}
		if f != nil {
			coms = f.Value
			sort.Sort(coms)
		}
	}

	return &Path{
		info: &originInfo{
			nlri:               nlri,
			source:             source,
			timestamp:          timestamp,
			noImplicitWithdraw: noImplicitWithdraw,
		},
		IsWithdraw: isWithdraw,
		pathAttrs:  pattrs,
		filtered:   make(map[string]PolicyDirection),
	}
}
示例#5
0
文件: openswitch.go 项目: mfeed/gobgp
func parseRouteToGobgp(route ovsdb.RowUpdate, nexthops map[string]ovsdb.Row) (*api.Path, bool, bool, error) {
	var nlri bgp.AddrPrefixInterface
	path := &api.Path{
		IsFromExternal: true,
		Pattrs:         make([][]byte, 0),
	}
	isWithdraw := false
	isFromGobgp := false
	prefix := route.New.Fields["prefix"].(string)
	safi := route.New.Fields["sub_address_family"].(string)
	afi := route.New.Fields["address_family"].(string)
	m := route.New.Fields["metric"].(float64)
	attrs := route.New.Fields["path_attributes"].(ovsdb.OvsMap).GoMap

	if attrs["IsFromGobgp"] == "true" {
		isFromGobgp = true
	}

	nh := make([]interface{}, 0)
	nhId, ok := route.New.Fields["bgp_nexthops"].(ovsdb.UUID)
	if ok {
		for id, n := range nexthops {
			if id == nhId.GoUUID {
				nh = append(nh, n.Fields["ip_address"])
			}
		}
	}

	nexthop := "0.0.0.0"
	if afi == "ipv6" {
		nexthop = "::"
	}
	if len(nh) == 0 {
		log.Debug("nexthop addres does not exist")
	} else if len(nh) == 1 {
		if net.ParseIP(nh[0].(string)) == nil {
			return nil, isWithdraw, isFromGobgp, fmt.Errorf("invalid nexthop address")
		} else {
			nexthop = nh[0].(string)
		}
	} else {
		return nil, isWithdraw, isFromGobgp, fmt.Errorf("route has multiple nexthop address")
	}

	med, _ := bgp.NewPathAttributeMultiExitDisc(uint32(m)).Serialize()
	path.Pattrs = append(path.Pattrs, med)

	lpref, err := strconv.Atoi(attrs["BGP_loc_pref"].(string))
	if err != nil {
		return nil, isWithdraw, isFromGobgp, err
	}
	localPref, _ := bgp.NewPathAttributeLocalPref(uint32(lpref)).Serialize()
	path.Pattrs = append(path.Pattrs, localPref)

	var origin_t int
	switch attrs["BGP_origin"].(string) {
	case "i":
		origin_t = bgp.BGP_ORIGIN_ATTR_TYPE_IGP
	case "e":
		origin_t = bgp.BGP_ORIGIN_ATTR_TYPE_EGP
	case "?":
		origin_t = bgp.BGP_ORIGIN_ATTR_TYPE_INCOMPLETE
	default:
		return nil, isWithdraw, isFromGobgp, fmt.Errorf("invalid origin")
	}
	origin, _ := bgp.NewPathAttributeOrigin(uint8(origin_t)).Serialize()
	path.Pattrs = append(path.Pattrs, origin)

	switch afi {
	case "ipv4", "ipv6":
		ip, net, err := net.ParseCIDR(prefix)
		if err != nil {
			return nil, isWithdraw, isFromGobgp, err
		}
		ones, _ := net.Mask.Size()
		if afi == "ipv4" {
			if ip.To4() == nil {
				return nil, isWithdraw, isFromGobgp, fmt.Errorf("invalid ipv4 prefix")
			}
			nlri = bgp.NewIPAddrPrefix(uint8(ones), ip.String())
		} else {
			if ip.To16() == nil {
				return nil, isWithdraw, isFromGobgp, fmt.Errorf("invalid ipv6 prefix")
			}
			nlri = bgp.NewIPv6AddrPrefix(uint8(ones), ip.String())
		}
	default:
		return nil, isWithdraw, isFromGobgp, fmt.Errorf("unsupported address family: %s", afi)
	}

	if afi == "ipv4" && safi == "unicast" {
		path.Nlri, _ = nlri.Serialize()
		n, _ := bgp.NewPathAttributeNextHop(nexthop).Serialize()
		path.Pattrs = append(path.Pattrs, n)
	} else {
		mpreach, _ := bgp.NewPathAttributeMpReachNLRI(nexthop, []bgp.AddrPrefixInterface{nlri}).Serialize()
		path.Pattrs = append(path.Pattrs, mpreach)
	}
	if attrs["BGP_flags"].(string) == "512" {
		isWithdraw = true
	}

	return path, isWithdraw, isFromGobgp, nil
}
示例#6
0
文件: table.go 项目: ramrunner/gobgp
func (t *Table) tableKey(nlri bgp.AddrPrefixInterface) string {
	return nlri.String()
}
示例#7
0
//modrib receives route updates from BGP server and adds the endpoint
func (self *OfnetBgp) modRib(path *table.Path) error {
	var nlri bgp.AddrPrefixInterface
	var nextHop string
	var macAddrStr string
	var portNo uint32

	nlri = path.GetNlri()
	nextHop = path.GetNexthop().String()

	if nextHop == "0.0.0.0" {
		return nil
	}

	if nlri == nil {
		return fmt.Errorf("no nlri")
	}

	endpointIPNet, _ := netlink.ParseIPNet(nlri.String())
	log.Infof("Bgp Rib Received endpoint update for path %s", path.String())

	//check if bgp published a route local to the host
	epid := self.agent.getEndpointIdByIpVrf(endpointIPNet.IP.Mask(endpointIPNet.Mask), "default")

	//Check if the route is local
	if nextHop == self.routerIP {
		log.Debugf("This is a local route skipping endpoint create! ")
		return nil
	} else if ep := self.agent.getEndpointByID(epid); ep != nil {
		if ep.EndpointType != "external" {
			log.Debugf("Endpoint was learnt via internal protocol. skipping update! ")
			return nil
		}
	}

	nhEpid := self.agent.getEndpointIdByIpVrf(net.ParseIP(nextHop), "default")

	if ep := self.agent.getEndpointByID(nhEpid); ep == nil {
		//the nexthop is not the directly connected eBgp peer
		macAddrStr = ""
		portNo = 0
	} else {
		macAddrStr = ep.MacAddrStr
		portNo = ep.PortNo
	}

	ipmask := net.ParseIP("255.255.255.255").Mask(endpointIPNet.Mask)

	if path.IsWithdraw != true {
		epreg := &OfnetEndpoint{
			EndpointID:   epid,
			EndpointType: "external",
			IpAddr:       endpointIPNet.IP,
			IpMask:       ipmask,
			Vrf:          "default", // FIXME set VRF correctly
			MacAddrStr:   macAddrStr,
			Vlan:         1,
			OriginatorIp: self.agent.localIp,
			PortNo:       portNo,
			Timestamp:    time.Now(),
		}

		// Install the endpoint in datapath
		// First, add the endpoint to local routing table

		self.agent.endpointDb.Set(epreg.EndpointID, epreg)
		err := self.agent.datapath.AddEndpoint(epreg)
		if err != nil {
			log.Errorf("Error adding endpoint: {%+v}. Err: %v", epreg, err)
			return err
		}
	} else {
		log.Info("Received route withdraw from BGP for ", endpointIPNet)
		endpoint := self.agent.getEndpointByIpVrf(endpointIPNet.IP, "default")
		if endpoint != nil {
			self.agent.datapath.RemoveEndpoint(endpoint)
			self.agent.endpointDb.Remove(endpoint.EndpointID)
		}
	}
	return nil
}
示例#8
0
func createRequestFromIPRouteMessage(m *zebra.Message) *api.AddPathRequest {

	header := m.Header
	body := m.Body.(*zebra.IPRouteBody)
	family := bgp.RF_IPv6_UC
	if header.Command == zebra.IPV4_ROUTE_ADD || header.Command == zebra.IPV4_ROUTE_DELETE {
		family = bgp.RF_IPv4_UC
	}

	var nlri bgp.AddrPrefixInterface
	pattr := make([]bgp.PathAttributeInterface, 0)
	var mpnlri *bgp.PathAttributeMpReachNLRI
	var isWithdraw bool = header.Command == zebra.IPV4_ROUTE_DELETE || header.Command == zebra.IPV6_ROUTE_DELETE

	origin := bgp.NewPathAttributeOrigin(bgp.BGP_ORIGIN_ATTR_TYPE_IGP)
	pattr = append(pattr, origin)

	log.WithFields(log.Fields{
		"Topic":        "Zebra",
		"RouteType":    body.Type.String(),
		"Flag":         body.Flags.String(),
		"Message":      body.Message,
		"Prefix":       body.Prefix,
		"PrefixLength": body.PrefixLength,
		"Nexthop":      body.Nexthops,
		"IfIndex":      body.Ifindexs,
		"Metric":       body.Metric,
		"Distance":     body.Distance,
		"api":          header.Command.String(),
	}).Debugf("create path from ip route message.")

	switch family {
	case bgp.RF_IPv4_UC:
		nlri = bgp.NewIPAddrPrefix(body.PrefixLength, body.Prefix.String())
		nexthop := bgp.NewPathAttributeNextHop(body.Nexthops[0].String())
		pattr = append(pattr, nexthop)
	case bgp.RF_IPv6_UC:
		nlri = bgp.NewIPv6AddrPrefix(body.PrefixLength, body.Prefix.String())
		mpnlri = bgp.NewPathAttributeMpReachNLRI(body.Nexthops[0].String(), []bgp.AddrPrefixInterface{nlri})
		pattr = append(pattr, mpnlri)
	default:
		log.WithFields(log.Fields{
			"Topic": "Zebra",
		}).Errorf("unsupport address family: %s", family)
		return nil
	}

	med := bgp.NewPathAttributeMultiExitDisc(body.Metric)
	pattr = append(pattr, med)

	binPattrs := make([][]byte, 0, len(pattr))
	for _, a := range pattr {
		bin, _ := a.Serialize()
		binPattrs = append(binPattrs, bin)
	}

	binNlri, _ := nlri.Serialize()

	path := &api.Path{
		Nlri:           binNlri,
		Pattrs:         binPattrs,
		IsWithdraw:     isWithdraw,
		Family:         uint32(family),
		IsFromExternal: true,
	}
	return &api.AddPathRequest{
		Resource: api.Resource_GLOBAL,
		Path:     path,
	}

}
示例#9
0
文件: global.go 项目: mfeed/gobgp
func ParsePath(rf bgp.RouteFamily, args []string) (*api.Path, error) {
	var nlri bgp.AddrPrefixInterface
	var extcomms []string
	var err error
	attrs := table.PathAttrs(make([]bgp.PathAttributeInterface, 0, 1))

	path := &api.Path{
		Pattrs: make([][]byte, 0),
	}

	fns := []func([]string) ([]string, bgp.PathAttributeInterface, error){
		extractOrigin,
		extractMed,
		extractLocalPref,
		extractCommunity,
		extractAigp,
	}

	for _, fn := range fns {
		var a bgp.PathAttributeInterface
		args, a, err = fn(args)
		if err != nil {
			return nil, err
		}
		if a != nil {
			attrs = append(attrs, a)
		}
	}

	args, nexthop, err := extractNexthop(rf, args)
	if err != nil {
		return nil, err
	}

	switch rf {
	case bgp.RF_IPv4_UC, bgp.RF_IPv6_UC:
		if len(args) < 1 {
			return nil, fmt.Errorf("invalid format")
		}
		ip, net, err := net.ParseCIDR(args[0])
		if err != nil {
			return nil, err
		}
		ones, _ := net.Mask.Size()
		if rf == bgp.RF_IPv4_UC {
			if ip.To4() == nil {
				return nil, fmt.Errorf("invalid ipv4 prefix")
			}
			nlri = bgp.NewIPAddrPrefix(uint8(ones), ip.String())
		} else {
			if ip.To16() == nil {
				return nil, fmt.Errorf("invalid ipv6 prefix")
			}
			nlri = bgp.NewIPv6AddrPrefix(uint8(ones), ip.String())
		}

		extcomms = args[1:]

	case bgp.RF_IPv4_VPN, bgp.RF_IPv6_VPN:
		if len(args) < 3 || args[1] != "rd" {
			return nil, fmt.Errorf("invalid format")
		}
		ip, net, _ := net.ParseCIDR(args[0])
		ones, _ := net.Mask.Size()

		rd, err := bgp.ParseRouteDistinguisher(args[2])
		if err != nil {
			return nil, err
		}

		extcomms = args[3:]

		mpls := bgp.NewMPLSLabelStack()

		if rf == bgp.RF_IPv4_VPN {
			if ip.To4() == nil {
				return nil, fmt.Errorf("invalid ipv4 prefix")
			}
			nlri = bgp.NewLabeledVPNIPAddrPrefix(uint8(ones), ip.String(), *mpls, rd)
		} else {
			if ip.To16() == nil {
				return nil, fmt.Errorf("invalid ipv6 prefix")
			}
			nlri = bgp.NewLabeledVPNIPv6AddrPrefix(uint8(ones), ip.String(), *mpls, rd)
		}
	case bgp.RF_IPv4_MPLS, bgp.RF_IPv6_MPLS:
		if len(args) < 2 {
			return nil, fmt.Errorf("invalid format")
		}

		ip, net, _ := net.ParseCIDR(args[0])
		ones, _ := net.Mask.Size()

		mpls, err := bgp.ParseMPLSLabelStack(args[1])
		if err != nil {
			return nil, err
		}

		extcomms = args[2:]

		if rf == bgp.RF_IPv4_MPLS {
			if ip.To4() == nil {
				return nil, fmt.Errorf("invalid ipv4 prefix")
			}
			nlri = bgp.NewLabeledIPAddrPrefix(uint8(ones), ip.String(), *mpls)
		} else {
			if ip.To4() != nil {
				return nil, fmt.Errorf("invalid ipv6 prefix")
			}
			nlri = bgp.NewLabeledIPv6AddrPrefix(uint8(ones), ip.String(), *mpls)
		}
	case bgp.RF_EVPN:
		nlri, extcomms, err = ParseEvpnArgs(args)
	case bgp.RF_FS_IPv4_UC, bgp.RF_FS_IPv6_UC, bgp.RF_FS_L2_VPN:
		nlri, extcomms, err = ParseFlowSpecArgs(rf, args)
	case bgp.RF_OPAQUE:
		m := extractReserved(args, []string{"key", "value"})
		if len(m["key"]) != 1 || len(m["value"]) != 1 {
			return nil, fmt.Errorf("invalid key-value format")
		}
		nlri = bgp.NewOpaqueNLRI([]byte(m["key"][0]))
		attrs = append(attrs, bgp.NewPathAttributeOpaqueValue([]byte(m["value"][0])))
	default:
		return nil, fmt.Errorf("Unsupported route family: %s", rf)
	}
	if err != nil {
		return nil, err
	}

	if rf == bgp.RF_IPv4_UC {
		path.Nlri, _ = nlri.Serialize()
		attrs = append(attrs, bgp.NewPathAttributeNextHop(nexthop))
	} else {
		mpreach := bgp.NewPathAttributeMpReachNLRI(nexthop, []bgp.AddrPrefixInterface{nlri})
		attrs = append(attrs, mpreach)
	}

	if extcomms != nil && len(extcomms) > 0 {
		extcomms, err := ParseExtendedCommunities(strings.Join(extcomms, " "))
		if err != nil {
			return nil, err
		}
		p := bgp.NewPathAttributeExtendedCommunities(extcomms)
		attrs = append(attrs, p)
	}

	sort.Sort(attrs)

	for _, attr := range attrs {
		buf, err := attr.Serialize()
		if err != nil {
			return nil, err
		}
		path.Pattrs = append(path.Pattrs, buf)
	}
	return path, nil
}
示例#10
0
func (s *Server) api2PathList(resource Resource, ApiPathList []*Path) ([]*table.Path, error) {
	var nlri bgp.AddrPrefixInterface
	var nexthop string
	var pi *table.PeerInfo

	pathList := make([]*table.Path, 0, len(ApiPathList))
	for _, path := range ApiPathList {
		seen := make(map[bgp.BGPAttrType]bool)

		pattr := make([]bgp.PathAttributeInterface, 0)
		extcomms := make([]bgp.ExtendedCommunityInterface, 0)

		if path.SourceAsn != 0 {
			pi = &table.PeerInfo{
				AS:      path.SourceAsn,
				LocalID: net.ParseIP(path.SourceId),
			}
		}

		if len(path.Nlri) > 0 {
			nlri = &bgp.IPAddrPrefix{}
			err := nlri.DecodeFromBytes(path.Nlri)
			if err != nil {
				return nil, err
			}
		}

		for _, attr := range path.Pattrs {
			p, err := bgp.GetPathAttribute(attr)
			if err != nil {
				return nil, err
			}

			err = p.DecodeFromBytes(attr)
			if err != nil {
				return nil, err
			}

			if _, ok := seen[p.GetType()]; !ok {
				seen[p.GetType()] = true
			} else {
				return nil, fmt.Errorf("the path attribute apears twice. Type : " + strconv.Itoa(int(p.GetType())))
			}
			switch p.GetType() {
			case bgp.BGP_ATTR_TYPE_NEXT_HOP:
				nexthop = p.(*bgp.PathAttributeNextHop).Value.String()
			case bgp.BGP_ATTR_TYPE_EXTENDED_COMMUNITIES:
				value := p.(*bgp.PathAttributeExtendedCommunities).Value
				if len(value) > 0 {
					extcomms = append(extcomms, value...)
				}
			case bgp.BGP_ATTR_TYPE_MP_REACH_NLRI:
				mpreach := p.(*bgp.PathAttributeMpReachNLRI)
				if len(mpreach.Value) != 1 {
					return nil, fmt.Errorf("include only one route in mp_reach_nlri")
				}
				nlri = mpreach.Value[0]
				nexthop = mpreach.Nexthop.String()
			default:
				pattr = append(pattr, p)
			}
		}

		if nlri == nil || nexthop == "" {
			return nil, fmt.Errorf("not found nlri or nexthop")
		}

		rf := bgp.AfiSafiToRouteFamily(nlri.AFI(), nlri.SAFI())

		if resource != Resource_VRF && rf == bgp.RF_IPv4_UC {
			pattr = append(pattr, bgp.NewPathAttributeNextHop(nexthop))
		} else {
			pattr = append(pattr, bgp.NewPathAttributeMpReachNLRI(nexthop, []bgp.AddrPrefixInterface{nlri}))
		}

		if len(extcomms) > 0 {
			pattr = append(pattr, bgp.NewPathAttributeExtendedCommunities(extcomms))
		}
		newPath := table.NewPath(pi, nlri, path.IsWithdraw, pattr, time.Now(), path.NoImplicitWithdraw)
		newPath.SetIsFromExternal(path.IsFromExternal)
		pathList = append(pathList, newPath)
	}
	return pathList, nil
}
示例#11
0
//modrib receives route updates from BGP server and adds the endpoint
func (self *OfnetBgp) modRib(path *api.Path) error {
	var nlri bgp.AddrPrefixInterface
	var nextHop string
	var macAddrStr string
	var portNo uint32
	if len(path.Nlri) > 0 {
		nlri = &bgp.IPAddrPrefix{}
		err := nlri.DecodeFromBytes(path.Nlri)
		if err != nil {
			return err
		}
	}

	for _, attr := range path.Pattrs {
		p, err := bgp.GetPathAttribute(attr)
		if err != nil {
			return err
		}

		err = p.DecodeFromBytes(attr)
		if err != nil {
			return err
		}

		if p.GetType() == bgp.BGP_ATTR_TYPE_NEXT_HOP {
			nextHop = p.(*bgp.PathAttributeNextHop).Value.String()
			break
		}
	}
	if nextHop == "0.0.0.0" {
		return nil
	}

	if nlri == nil {
		return fmt.Errorf("no nlri")
	}

	endpointIPNet, _ := netlink.ParseIPNet(nlri.String())
	log.Infof("Bgp Rib Received endpoint update for %v , with nexthop %v",
		endpointIPNet, nextHop)
	if endpointIPNet == nil {
		return nil
	}
	//check if bgp published a route local to the host
	epid := self.agent.getEndpointIdByIpVrf(endpointIPNet.IP.Mask(endpointIPNet.Mask), "default")

	//Check if the route is local
	if nextHop == self.routerIP {
		log.Info("This is a local route skipping endpoint create! ")
		return nil
	} else if self.agent.endpointDb[epid] != nil {
		if self.agent.endpointDb[epid].EndpointType != "external" {
			log.Info("Endpoint was learnt via internal protocol. skipping update! ")
			return nil
		}
	}
	nhEpid := self.agent.getEndpointIdByIpVrf(net.ParseIP(nextHop), "default")
	if self.agent.endpointDb[nhEpid] == nil {
		//the nexthop is not the directly connected eBgp peer
		macAddrStr = ""
		portNo = 0
	} else {
		macAddrStr = self.agent.endpointDb[nhEpid].MacAddrStr
		portNo = self.agent.endpointDb[nhEpid].PortNo
	}

	ipmask := net.ParseIP("255.255.255.255").Mask(endpointIPNet.Mask)

	if path.IsWithdraw != true {
		epreg := &OfnetEndpoint{
			EndpointID:   epid,
			EndpointType: "external",
			IpAddr:       endpointIPNet.IP,
			IpMask:       ipmask,
			Vrf:          "default", // FIXME set VRF correctly
			MacAddrStr:   macAddrStr,
			Vlan:         1,
			OriginatorIp: self.agent.localIp,
			PortNo:       portNo,
			Timestamp:    time.Now(),
		}

		// Install the endpoint in datapath
		// First, add the endpoint to local routing table
		self.agent.endpointDb[epreg.EndpointID] = epreg
		err := self.agent.datapath.AddEndpoint(epreg)
		if err != nil {
			log.Errorf("Error adding endpoint: {%+v}. Err: %v", epreg, err)
			return err
		}
	} else {
		log.Info("Received route withdraw from BGP for ", endpointIPNet)
		endpoint := self.agent.getEndpointByIpVrf(endpointIPNet.IP, "default")
		if endpoint != nil {
			self.agent.datapath.RemoveEndpoint(endpoint)
			delete(self.agent.endpointDb, endpoint.EndpointID)
		}
	}
	return nil
}