Examples with LiteralOrigin org.batfish.datamodel.routing_policy.expr.LiteralOrigin used on opensource projects

Example 1 with LiteralOrigin

use of org.batfish.datamodel.routing_policy.expr.LiteralOrigin in project batfish by batfish.

the class CiscoControlPlaneExtractor method toOriginExpr.

private OriginExpr toOriginExpr(Origin_expr_literalContext ctx) {
    OriginType originType;
    Integer asNum = null;
    LiteralOrigin originExpr;
    if (ctx.IGP() != null) {
        originType = OriginType.IGP;
    } else if (ctx.INCOMPLETE() != null) {
        originType = OriginType.INCOMPLETE;
    } else if (ctx.as != null) {
        asNum = toInteger(ctx.as);
        originType = OriginType.IGP;
    } else {
        throw convError(OriginExpr.class, ctx);
    }
    originExpr = new LiteralOrigin(originType, asNum);
    return originExpr;
}

Example 2 with LiteralOrigin

use of org.batfish.datamodel.routing_policy.expr.LiteralOrigin in project batfish by batfish.

the class VpnConnection method applyToVpnGateway.

public void applyToVpnGateway(AwsConfiguration awsConfiguration, Region region, Warnings warnings) {
    if (!awsConfiguration.getConfigurationNodes().containsKey(_vpnGatewayId)) {
        warnings.redFlag(String.format("VPN Gateway \"%s\" referred by VPN connection \"%s\" not found", _vpnGatewayId, _vpnConnectionId));
        return;
    }
    Configuration vpnGatewayCfgNode = awsConfiguration.getConfigurationNodes().get(_vpnGatewayId);
    for (int i = 0; i < _ipsecTunnels.size(); i++) {
        int idNum = i + 1;
        String vpnId = _vpnConnectionId + "-" + idNum;
        IpsecTunnel ipsecTunnel = _ipsecTunnels.get(i);
        if (ipsecTunnel.getCgwBgpAsn() != -1 && (_staticRoutesOnly || _routes.size() != 0)) {
            throw new BatfishException("Unexpected combination of BGP and static routes for VPN connection: \"" + _vpnConnectionId + "\"");
        }
        // create representation structures and add to configuration node
        IpsecVpn ipsecVpn = new IpsecVpn(vpnId, vpnGatewayCfgNode);
        vpnGatewayCfgNode.getIpsecVpns().put(vpnId, ipsecVpn);
        IpsecPolicy ipsecPolicy = new IpsecPolicy(vpnId);
        vpnGatewayCfgNode.getIpsecPolicies().put(vpnId, ipsecPolicy);
        ipsecVpn.setIpsecPolicy(ipsecPolicy);
        IpsecProposal ipsecProposal = new IpsecProposal(vpnId, -1);
        vpnGatewayCfgNode.getIpsecProposals().put(vpnId, ipsecProposal);
        ipsecPolicy.getProposals().put(vpnId, ipsecProposal);
        IkeGateway ikeGateway = new IkeGateway(vpnId);
        vpnGatewayCfgNode.getIkeGateways().put(vpnId, ikeGateway);
        ipsecVpn.setIkeGateway(ikeGateway);
        IkePolicy ikePolicy = new IkePolicy(vpnId);
        vpnGatewayCfgNode.getIkePolicies().put(vpnId, ikePolicy);
        ikeGateway.setIkePolicy(ikePolicy);
        IkeProposal ikeProposal = new IkeProposal(vpnId, -1);
        vpnGatewayCfgNode.getIkeProposals().put(vpnId, ikeProposal);
        ikePolicy.getProposals().put(vpnId, ikeProposal);
        String externalInterfaceName = "external" + idNum;
        InterfaceAddress externalInterfaceAddress = new InterfaceAddress(ipsecTunnel.getVgwOutsideAddress(), Prefix.MAX_PREFIX_LENGTH);
        Interface externalInterface = Utils.newInterface(externalInterfaceName, vpnGatewayCfgNode, externalInterfaceAddress);
        String vpnInterfaceName = "vpn" + idNum;
        InterfaceAddress vpnInterfaceAddress = new InterfaceAddress(ipsecTunnel.getVgwInsideAddress(), ipsecTunnel.getVgwInsidePrefixLength());
        Interface vpnInterface = Utils.newInterface(vpnInterfaceName, vpnGatewayCfgNode, vpnInterfaceAddress);
        // Set fields within representation structures
        // ipsec
        ipsecVpn.setBindInterface(vpnInterface);
        ipsecPolicy.setPfsKeyGroup(toDiffieHellmanGroup(ipsecTunnel.getIpsecPerfectForwardSecrecy()));
        ipsecProposal.setAuthenticationAlgorithm(toIpsecAuthenticationAlgorithm(ipsecTunnel.getIpsecAuthProtocol()));
        ipsecProposal.setEncryptionAlgorithm(toEncryptionAlgorithm(ipsecTunnel.getIpsecEncryptionProtocol()));
        ipsecProposal.setProtocol(toIpsecProtocol(ipsecTunnel.getIpsecProtocol()));
        ipsecProposal.setLifetimeSeconds(ipsecTunnel.getIpsecLifetime());
        // ike
        ikeGateway.setExternalInterface(externalInterface);
        ikeGateway.setAddress(ipsecTunnel.getCgwOutsideAddress());
        ikeGateway.setLocalIp(externalInterface.getAddress().getIp());
        if (ipsecTunnel.getIkePreSharedKeyHash() != null) {
            ikePolicy.setPreSharedKeyHash(ipsecTunnel.getIkePreSharedKeyHash());
            ikeProposal.setAuthenticationMethod(IkeAuthenticationMethod.PRE_SHARED_KEYS);
        }
        ikeProposal.setAuthenticationAlgorithm(toIkeAuthenticationAlgorithm(ipsecTunnel.getIkeAuthProtocol()));
        ikeProposal.setDiffieHellmanGroup(toDiffieHellmanGroup(ipsecTunnel.getIkePerfectForwardSecrecy()));
        ikeProposal.setEncryptionAlgorithm(toEncryptionAlgorithm(ipsecTunnel.getIkeEncryptionProtocol()));
        ikeProposal.setLifetimeSeconds(ipsecTunnel.getIkeLifetime());
        // bgp (if configured)
        if (ipsecTunnel.getVgwBgpAsn() != -1) {
            BgpProcess proc = vpnGatewayCfgNode.getDefaultVrf().getBgpProcess();
            if (proc == null) {
                proc = new BgpProcess();
                proc.setRouterId(ipsecTunnel.getVgwInsideAddress());
                proc.setMultipathEquivalentAsPathMatchMode(MultipathEquivalentAsPathMatchMode.EXACT_PATH);
                vpnGatewayCfgNode.getDefaultVrf().setBgpProcess(proc);
            }
            BgpNeighbor cgBgpNeighbor = new BgpNeighbor(ipsecTunnel.getCgwInsideAddress(), vpnGatewayCfgNode);
            cgBgpNeighbor.setVrf(Configuration.DEFAULT_VRF_NAME);
            proc.getNeighbors().put(cgBgpNeighbor.getPrefix(), cgBgpNeighbor);
            cgBgpNeighbor.setRemoteAs(ipsecTunnel.getCgwBgpAsn());
            cgBgpNeighbor.setLocalAs(ipsecTunnel.getVgwBgpAsn());
            cgBgpNeighbor.setLocalIp(ipsecTunnel.getVgwInsideAddress());
            cgBgpNeighbor.setDefaultMetric(BGP_NEIGHBOR_DEFAULT_METRIC);
            cgBgpNeighbor.setSendCommunity(false);
            VpnGateway vpnGateway = region.getVpnGateways().get(_vpnGatewayId);
            List<String> attachmentVpcIds = vpnGateway.getAttachmentVpcIds();
            if (attachmentVpcIds.size() != 1) {
                throw new BatfishException("Not sure what routes to advertise since VPN Gateway: \"" + _vpnGatewayId + "\" for VPN connection: \"" + _vpnConnectionId + "\" is linked to multiple VPCs");
            }
            String vpcId = attachmentVpcIds.get(0);
            // iBGP connection to VPC
            Configuration vpcNode = awsConfiguration.getConfigurationNodes().get(vpcId);
            Ip vpcIfaceAddress = vpcNode.getInterfaces().get(_vpnGatewayId).getAddress().getIp();
            Ip vgwToVpcIfaceAddress = vpnGatewayCfgNode.getInterfaces().get(vpcId).getAddress().getIp();
            BgpNeighbor vgwToVpcBgpNeighbor = new BgpNeighbor(vpcIfaceAddress, vpnGatewayCfgNode);
            proc.getNeighbors().put(vgwToVpcBgpNeighbor.getPrefix(), vgwToVpcBgpNeighbor);
            vgwToVpcBgpNeighbor.setVrf(Configuration.DEFAULT_VRF_NAME);
            vgwToVpcBgpNeighbor.setLocalAs(ipsecTunnel.getVgwBgpAsn());
            vgwToVpcBgpNeighbor.setLocalIp(vgwToVpcIfaceAddress);
            vgwToVpcBgpNeighbor.setRemoteAs(ipsecTunnel.getVgwBgpAsn());
            vgwToVpcBgpNeighbor.setDefaultMetric(BGP_NEIGHBOR_DEFAULT_METRIC);
            vgwToVpcBgpNeighbor.setSendCommunity(true);
            // iBGP connection from VPC
            BgpNeighbor vpcToVgwBgpNeighbor = new BgpNeighbor(vgwToVpcIfaceAddress, vpcNode);
            BgpProcess vpcProc = new BgpProcess();
            vpcNode.getDefaultVrf().setBgpProcess(vpcProc);
            vpcProc.setMultipathEquivalentAsPathMatchMode(MultipathEquivalentAsPathMatchMode.EXACT_PATH);
            vpcProc.setRouterId(vpcIfaceAddress);
            vpcProc.getNeighbors().put(vpcToVgwBgpNeighbor.getPrefix(), vpcToVgwBgpNeighbor);
            vpcToVgwBgpNeighbor.setVrf(Configuration.DEFAULT_VRF_NAME);
            vpcToVgwBgpNeighbor.setLocalAs(ipsecTunnel.getVgwBgpAsn());
            vpcToVgwBgpNeighbor.setLocalIp(vpcIfaceAddress);
            vpcToVgwBgpNeighbor.setRemoteAs(ipsecTunnel.getVgwBgpAsn());
            vpcToVgwBgpNeighbor.setDefaultMetric(BGP_NEIGHBOR_DEFAULT_METRIC);
            vpcToVgwBgpNeighbor.setSendCommunity(true);
            String rpRejectAllName = "~REJECT_ALL~";
            String rpAcceptAllEbgpAndSetNextHopSelfName = "~ACCEPT_ALL_EBGP_AND_SET_NEXT_HOP_SELF~";
            If acceptIffEbgp = new If();
            acceptIffEbgp.setGuard(new MatchProtocol(RoutingProtocol.BGP));
            acceptIffEbgp.setTrueStatements(ImmutableList.of(Statements.ExitAccept.toStaticStatement()));
            acceptIffEbgp.setFalseStatements(ImmutableList.of(Statements.ExitReject.toStaticStatement()));
            RoutingPolicy vgwRpAcceptAllBgp = new RoutingPolicy(rpAcceptAllEbgpAndSetNextHopSelfName, vpnGatewayCfgNode);
            vpnGatewayCfgNode.getRoutingPolicies().put(vgwRpAcceptAllBgp.getName(), vgwRpAcceptAllBgp);
            vgwRpAcceptAllBgp.setStatements(ImmutableList.of(new SetNextHop(new SelfNextHop(), false), acceptIffEbgp));
            vgwToVpcBgpNeighbor.setExportPolicy(rpAcceptAllEbgpAndSetNextHopSelfName);
            RoutingPolicy vgwRpRejectAll = new RoutingPolicy(rpRejectAllName, vpnGatewayCfgNode);
            vpnGatewayCfgNode.getRoutingPolicies().put(rpRejectAllName, vgwRpRejectAll);
            vgwToVpcBgpNeighbor.setImportPolicy(rpRejectAllName);
            String rpAcceptAllName = "~ACCEPT_ALL~";
            RoutingPolicy vpcRpAcceptAll = new RoutingPolicy(rpAcceptAllName, vpcNode);
            vpcNode.getRoutingPolicies().put(rpAcceptAllName, vpcRpAcceptAll);
            vpcRpAcceptAll.setStatements(ImmutableList.of(Statements.ExitAccept.toStaticStatement()));
            vpcToVgwBgpNeighbor.setImportPolicy(rpAcceptAllName);
            RoutingPolicy vpcRpRejectAll = new RoutingPolicy(rpRejectAllName, vpcNode);
            vpcNode.getRoutingPolicies().put(rpRejectAllName, vpcRpRejectAll);
            vpcToVgwBgpNeighbor.setExportPolicy(rpRejectAllName);
            Vpc vpc = region.getVpcs().get(vpcId);
            String originationPolicyName = vpnId + "_origination";
            RoutingPolicy originationRoutingPolicy = new RoutingPolicy(originationPolicyName, vpnGatewayCfgNode);
            vpnGatewayCfgNode.getRoutingPolicies().put(originationPolicyName, originationRoutingPolicy);
            cgBgpNeighbor.setExportPolicy(originationPolicyName);
            If originationIf = new If();
            List<Statement> statements = originationRoutingPolicy.getStatements();
            statements.add(originationIf);
            statements.add(Statements.ExitReject.toStaticStatement());
            originationIf.getTrueStatements().add(new SetOrigin(new LiteralOrigin(OriginType.IGP, null)));
            originationIf.getTrueStatements().add(Statements.ExitAccept.toStaticStatement());
            RouteFilterList originationRouteFilter = new RouteFilterList(originationPolicyName);
            vpnGatewayCfgNode.getRouteFilterLists().put(originationPolicyName, originationRouteFilter);
            vpc.getCidrBlockAssociations().forEach(prefix -> {
                RouteFilterLine matchOutgoingPrefix = new RouteFilterLine(LineAction.ACCEPT, prefix, new SubRange(prefix.getPrefixLength(), prefix.getPrefixLength()));
                originationRouteFilter.addLine(matchOutgoingPrefix);
            });
            Conjunction conj = new Conjunction();
            originationIf.setGuard(conj);
            conj.getConjuncts().add(new MatchProtocol(RoutingProtocol.STATIC));
            conj.getConjuncts().add(new MatchPrefixSet(new DestinationNetwork(), new NamedPrefixSet(originationPolicyName)));
        }
        // static routes (if configured)
        for (Prefix staticRoutePrefix : _routes) {
            StaticRoute staticRoute = StaticRoute.builder().setNetwork(staticRoutePrefix).setNextHopIp(ipsecTunnel.getCgwInsideAddress()).setAdministrativeCost(Route.DEFAULT_STATIC_ROUTE_ADMIN).setMetric(Route.DEFAULT_STATIC_ROUTE_COST).build();
            vpnGatewayCfgNode.getDefaultVrf().getStaticRoutes().add(staticRoute);
        }
    }
}

Example 3 with LiteralOrigin

use of org.batfish.datamodel.routing_policy.expr.LiteralOrigin in project batfish by batfish.

the class JuniperConfiguration method createBgpProcess.

private BgpProcess createBgpProcess(RoutingInstance routingInstance) {
    initDefaultBgpExportPolicy();
    initDefaultBgpImportPolicy();
    String vrfName = routingInstance.getName();
    Vrf vrf = _c.getVrfs().get(vrfName);
    BgpProcess proc = new BgpProcess();
    Ip routerId = routingInstance.getRouterId();
    if (routerId == null) {
        routerId = _defaultRoutingInstance.getRouterId();
        if (routerId == null) {
            routerId = Ip.ZERO;
        }
    }
    proc.setRouterId(routerId);
    BgpGroup mg = routingInstance.getMasterBgpGroup();
    boolean multipathEbgp = false;
    boolean multipathIbgp = false;
    boolean multipathMultipleAs = false;
    boolean multipathEbgpSet = false;
    boolean multipathIbgpSet = false;
    boolean multipathMultipleAsSet = false;
    if (mg.getLocalAs() == null) {
        Integer routingInstanceAs = routingInstance.getAs();
        if (routingInstanceAs == null) {
            routingInstanceAs = _defaultRoutingInstance.getAs();
        }
        if (routingInstanceAs == null) {
            _w.redFlag("BGP BROKEN FOR THIS ROUTER: Cannot determine local autonomous system");
        } else {
            mg.setLocalAs(routingInstanceAs);
        }
    }
    // Set default authentication algorithm if missing
    if (mg.getAuthenticationAlgorithm() == null) {
        mg.setAuthenticationAlgorithm(DEFAULT_BGP_AUTHENTICATION_ALGORITHM);
    }
    for (IpBgpGroup ig : routingInstance.getIpBgpGroups().values()) {
        ig.cascadeInheritance();
    }
    _unreferencedBgpGroups = new TreeMap<>();
    int fakeIpCounter = 0;
    for (Entry<String, NamedBgpGroup> e : routingInstance.getNamedBgpGroups().entrySet()) {
        fakeIpCounter++;
        String name = e.getKey();
        NamedBgpGroup group = e.getValue();
        if (!group.getIpv6() && !group.getInherited()) {
            _unreferencedBgpGroups.put(name, group.getDefinitionLine());
            Ip fakeIp = new Ip(-1 * fakeIpCounter);
            IpBgpGroup dummy = new IpBgpGroup(fakeIp);
            dummy.setParent(group);
            dummy.cascadeInheritance();
            routingInstance.getIpBgpGroups().put(fakeIp, dummy);
        }
    }
    for (Entry<Ip, IpBgpGroup> e : routingInstance.getIpBgpGroups().entrySet()) {
        Ip ip = e.getKey();
        IpBgpGroup ig = e.getValue();
        BgpNeighbor neighbor = new BgpNeighbor(ip, _c);
        neighbor.setVrf(vrfName);
        // route reflection
        Ip declaredClusterId = ig.getClusterId();
        if (declaredClusterId != null) {
            neighbor.setRouteReflectorClient(true);
            neighbor.setClusterId(declaredClusterId.asLong());
        } else {
            neighbor.setClusterId(routerId.asLong());
        }
        // multipath multiple-as
        boolean currentGroupMultipathMultipleAs = ig.getMultipathMultipleAs();
        if (multipathMultipleAsSet && currentGroupMultipathMultipleAs != multipathMultipleAs) {
            _w.redFlag("Currently do not support mixed multipath-multiple-as/non-multipath-multiple-as bgp" + "groups on Juniper - FORCING NON-MULTIPATH-MULTIPLE-AS");
            multipathMultipleAs = false;
        } else {
            multipathMultipleAs = currentGroupMultipathMultipleAs;
            multipathMultipleAsSet = true;
        }
        String authenticationKeyChainName = ig.getAuthenticationKeyChainName();
        if (ig.getAuthenticationKeyChainName() != null) {
            if (!_c.getAuthenticationKeyChains().containsKey(authenticationKeyChainName)) {
                authenticationKeyChainName = null;
            } else if (ig.getAuthenticationKey() != null) {
                _w.redFlag("Both authentication-key and authentication-key-chain specified for neighbor " + ig.getRemoteAddress());
            }
        }
        BgpAuthenticationSettings bgpAuthenticationSettings = new BgpAuthenticationSettings();
        bgpAuthenticationSettings.setAuthenticationAlgorithm(ig.getAuthenticationAlgorithm());
        bgpAuthenticationSettings.setAuthenticationKey(ig.getAuthenticationKey());
        bgpAuthenticationSettings.setAuthenticationKeyChainName(authenticationKeyChainName);
        neighbor.setAuthenticationSettings(bgpAuthenticationSettings);
        Boolean ebgpMultihop = ig.getEbgpMultihop();
        if (ebgpMultihop == null) {
            ebgpMultihop = false;
        }
        neighbor.setEbgpMultihop(ebgpMultihop);
        Integer loops = ig.getLoops();
        boolean allowLocalAsIn = loops != null && loops > 0;
        neighbor.setAllowLocalAsIn(allowLocalAsIn);
        Boolean advertisePeerAs = ig.getAdvertisePeerAs();
        if (advertisePeerAs == null) {
            advertisePeerAs = false;
        }
        neighbor.setAllowRemoteAsOut(advertisePeerAs);
        Boolean advertiseExternal = ig.getAdvertiseExternal();
        if (advertiseExternal == null) {
            advertiseExternal = false;
        }
        neighbor.setAdvertiseExternal(advertiseExternal);
        Boolean advertiseInactive = ig.getAdvertiseInactive();
        if (advertiseInactive == null) {
            advertiseInactive = false;
        }
        neighbor.setAdvertiseInactive(advertiseInactive);
        neighbor.setGroup(ig.getGroupName());
        // import policies
        String peerImportPolicyName = "~PEER_IMPORT_POLICY:" + ig.getRemoteAddress() + "~";
        neighbor.setImportPolicy(peerImportPolicyName);
        RoutingPolicy peerImportPolicy = new RoutingPolicy(peerImportPolicyName, _c);
        _c.getRoutingPolicies().put(peerImportPolicyName, peerImportPolicy);
        // default import policy is to accept
        peerImportPolicy.getStatements().add(new SetDefaultPolicy(DEFAULT_BGP_IMPORT_POLICY_NAME));
        peerImportPolicy.getStatements().add(Statements.SetDefaultActionAccept.toStaticStatement());
        List<BooleanExpr> importPolicyCalls = new ArrayList<>();
        ig.getImportPolicies().forEach((importPolicyName, importPolicyLine) -> {
            PolicyStatement importPolicy = _policyStatements.get(importPolicyName);
            if (importPolicy == null) {
                undefined(JuniperStructureType.POLICY_STATEMENT, importPolicyName, JuniperStructureUsage.BGP_IMPORT_POLICY, importPolicyLine);
            } else {
                setPolicyStatementReferent(importPolicyName, ig.getImportPolicies(), "BGP import policy for neighbor: " + ig.getRemoteAddress());
                CallExpr callPolicy = new CallExpr(importPolicyName);
                importPolicyCalls.add(callPolicy);
            }
        });
        If peerImportPolicyConditional = new If();
        DisjunctionChain importPolicyChain = new DisjunctionChain(importPolicyCalls);
        peerImportPolicyConditional.setGuard(importPolicyChain);
        peerImportPolicy.getStatements().add(peerImportPolicyConditional);
        peerImportPolicyConditional.getTrueStatements().add(Statements.ExitAccept.toStaticStatement());
        peerImportPolicyConditional.getFalseStatements().add(Statements.ExitReject.toStaticStatement());
        // export policies
        String peerExportPolicyName = "~PEER_EXPORT_POLICY:" + ig.getRemoteAddress() + "~";
        neighbor.setExportPolicy(peerExportPolicyName);
        RoutingPolicy peerExportPolicy = new RoutingPolicy(peerExportPolicyName, _c);
        _c.getRoutingPolicies().put(peerExportPolicyName, peerExportPolicy);
        peerExportPolicy.getStatements().add(new SetDefaultPolicy(DEFAULT_BGP_EXPORT_POLICY_NAME));
        /*
       * For new BGP advertisements, i.e. those that are created from non-BGP
       * routes, an origin code must be set. By default, Juniper sets the origin
       * code to IGP.
       */
        If setOriginForNonBgp = new If();
        Disjunction isBgp = new Disjunction();
        isBgp.getDisjuncts().add(new MatchProtocol(RoutingProtocol.BGP));
        isBgp.getDisjuncts().add(new MatchProtocol(RoutingProtocol.IBGP));
        setOriginForNonBgp.setGuard(isBgp);
        setOriginForNonBgp.getFalseStatements().add(new SetOrigin(new LiteralOrigin(OriginType.IGP, null)));
        peerExportPolicy.getStatements().add(setOriginForNonBgp);
        List<BooleanExpr> exportPolicyCalls = new ArrayList<>();
        ig.getExportPolicies().forEach((exportPolicyName, exportPolicyLine) -> {
            PolicyStatement exportPolicy = _policyStatements.get(exportPolicyName);
            if (exportPolicy == null) {
                undefined(JuniperStructureType.POLICY_STATEMENT, exportPolicyName, JuniperStructureUsage.BGP_EXPORT_POLICY, exportPolicyLine);
            } else {
                setPolicyStatementReferent(exportPolicyName, ig.getExportPolicies(), "BGP export policy for neighbor: " + ig.getRemoteAddress());
                CallExpr callPolicy = new CallExpr(exportPolicyName);
                exportPolicyCalls.add(callPolicy);
            }
        });
        If peerExportPolicyConditional = new If();
        DisjunctionChain exportPolicyChain = new DisjunctionChain(exportPolicyCalls);
        peerExportPolicyConditional.setGuard(exportPolicyChain);
        peerExportPolicyConditional.getTrueStatements().add(Statements.ExitAccept.toStaticStatement());
        peerExportPolicyConditional.getFalseStatements().add(Statements.ExitReject.toStaticStatement());
        peerExportPolicy.getStatements().add(peerExportPolicyConditional);
        // inherit local-as
        neighbor.setLocalAs(ig.getLocalAs());
        if (neighbor.getLocalAs() == null) {
            _w.redFlag("Missing local-as for neighbor: " + ig.getRemoteAddress());
            continue;
        }
        /*
       * inherit peer-as, or use local-as if internal
       *
       * Also set multipath
       */
        if (ig.getType() == BgpGroupType.INTERNAL) {
            neighbor.setRemoteAs(ig.getLocalAs());
            boolean currentGroupMultipathIbgp = ig.getMultipath();
            if (multipathIbgpSet && currentGroupMultipathIbgp != multipathIbgp) {
                _w.redFlag("Currently do not support mixed iBGP multipath/non-multipath bgp groups on Juniper " + "- FORCING NON-MULTIPATH IBGP");
                multipathIbgp = false;
            } else {
                multipathIbgp = currentGroupMultipathIbgp;
                multipathIbgpSet = true;
            }
        } else {
            neighbor.setRemoteAs(ig.getPeerAs());
            boolean currentGroupMultipathEbgp = ig.getMultipath();
            if (multipathEbgpSet && currentGroupMultipathEbgp != multipathEbgp) {
                _w.redFlag("Currently do not support mixed eBGP multipath/non-multipath bgp groups on Juniper " + "- FORCING NON-MULTIPATH EBGP");
                multipathEbgp = false;
            } else {
                multipathEbgp = currentGroupMultipathEbgp;
                multipathEbgpSet = true;
            }
        }
        // TODO: implement better behavior than setting default metric to 0
        neighbor.setDefaultMetric(0);
        // TODO: find out if there is a juniper equivalent of cisco
        // send-community
        neighbor.setSendCommunity(true);
        // inherit update-source
        Ip localIp = ig.getLocalAddress();
        if (localIp == null) {
            // peer
            outerloop: for (org.batfish.datamodel.Interface iface : vrf.getInterfaces().values()) {
                for (InterfaceAddress address : iface.getAllAddresses()) {
                    if (address.getPrefix().containsIp(ip)) {
                        localIp = address.getIp();
                        break outerloop;
                    }
                }
            }
        }
        if (localIp == null && _defaultAddressSelection) {
            initFirstLoopbackInterface();
            if (_lo0 != null) {
                InterfaceAddress lo0Unit0Address = _lo0.getPrimaryAddress();
                if (lo0Unit0Address != null) {
                    localIp = lo0Unit0Address.getIp();
                }
            }
        }
        if (localIp == null && ip.valid()) {
            _w.redFlag("Could not determine local ip for bgp peering with neighbor ip: " + ip);
        } else {
            neighbor.setLocalIp(localIp);
        }
        if (neighbor.getGroup() == null || !_unreferencedBgpGroups.containsKey(neighbor.getGroup())) {
            proc.getNeighbors().put(neighbor.getPrefix(), neighbor);
        }
    }
    proc.setMultipathEbgp(multipathEbgpSet);
    proc.setMultipathIbgp(multipathIbgp);
    MultipathEquivalentAsPathMatchMode multipathEquivalentAsPathMatchMode = multipathMultipleAs ? MultipathEquivalentAsPathMatchMode.PATH_LENGTH : MultipathEquivalentAsPathMatchMode.FIRST_AS;
    proc.setMultipathEquivalentAsPathMatchMode(multipathEquivalentAsPathMatchMode);
    return proc;
}

Example 4 with LiteralOrigin

use of org.batfish.datamodel.routing_policy.expr.LiteralOrigin in project batfish by batfish.

the class CiscoConfiguration method bgpRedistributeWithEnvironmentExpr.

private WithEnvironmentExpr bgpRedistributeWithEnvironmentExpr(BooleanExpr expr, OriginType originType) {
    WithEnvironmentExpr we = new WithEnvironmentExpr();
    we.setExpr(expr);
    we.getPreStatements().add(Statements.SetWriteIntermediateBgpAttributes.toStaticStatement());
    we.getPostStatements().add(Statements.UnsetWriteIntermediateBgpAttributes.toStaticStatement());
    we.getPostTrueStatements().add(Statements.SetReadIntermediateBgpAttributes.toStaticStatement());
    we.getPostTrueStatements().add(new SetOrigin(new LiteralOrigin(originType, null)));
    return we;
}

Example 5 with LiteralOrigin

use of org.batfish.datamodel.routing_policy.expr.LiteralOrigin in project batfish by batfish.

the class VirtualRouterTest method computeBgpAdvertisementsSentToOutsideIgp.

@Test
public void computeBgpAdvertisementsSentToOutsideIgp() {
    RoutingPolicy exportPolicy = _routingPolicyBuilder.setStatements(ImmutableList.of(new SetOrigin(new LiteralOrigin(OriginType.INCOMPLETE, null)), _exitAcceptStatement)).build();
    _bgpNeighborBuilder.setExportPolicy(exportPolicy.getName()).setRemoteAs(TEST_AS2).build();
    _testVirtualRouter._mainRib.mergeRoute(new OspfInternalRoute.Builder().setNetwork(TEST_NETWORK).setMetric(TEST_METRIC).setArea(TEST_AREA).setAdmin(TEST_ADMIN).setProtocol(RoutingProtocol.OSPF).build());
    // checking number of bgp advertisements
    assertThat(_testVirtualRouter.computeBgpAdvertisementsToOutside(_ipOwners), equalTo(1));
    BgpAdvertisement bgpAdvertisement = _testVirtualRouter._sentBgpAdvertisements.iterator().next();
    // checking the attributes of the bgp advertisement
    assertThat(bgpAdvertisement, hasDestinationIp(TEST_DEST_IP));
    assertThat(bgpAdvertisement, hasNetwork(TEST_NETWORK));
    assertThat(bgpAdvertisement, hasOriginatorIp(TEST_SRC_IP));
    assertThat(bgpAdvertisement, hasType(BgpAdvertisementType.EBGP_SENT));
    assertThat(bgpAdvertisement, hasSourceIp(TEST_SRC_IP));
}