Examples with BgpPeerConfig org.batfish.datamodel.BgpPeerConfig used on opensource projects

Example 1 with BgpPeerConfig

use of org.batfish.datamodel.BgpPeerConfig in project batfish by batfish.

the class BgpTopologyUtils method addActivePeerEdges.

private static void addActivePeerEdges(BgpPeerConfigId neighborId, MutableValueGraph<BgpPeerConfigId, BgpSessionProperties> graph, NetworkConfigurations nc, Map<Ip, Map<String, Set<String>>> ipOwners, Map<String, Multimap<String, BgpPeerConfigId>> receivers, Set<Ip> potentialLocalIps, boolean checkReachability, TracerouteEngine tracerouteEngine) {
    BgpActivePeerConfig neighbor = nc.getBgpPointToPointPeerConfig(neighborId);
    if (neighbor == null || potentialLocalIps.isEmpty() || neighbor.getLocalAs() == null || neighbor.getPeerAddress() == null || neighbor.getRemoteAsns().isEmpty()) {
        return;
    }
    // Find nodes that own the neighbor's peer address
    Map<String, Set<String>> possibleVrfs = ipOwners.get(neighbor.getPeerAddress());
    if (possibleVrfs == null) {
        return;
    }
    Set<BgpPeerConfigId> alreadyEstablished = graph.adjacentNodes(neighborId);
    for (Entry<String, Set<String>> entry : possibleVrfs.entrySet()) {
        String node = entry.getKey();
        Set<String> vrfs = entry.getValue();
        Multimap<String, BgpPeerConfigId> receiversByVrf = receivers.get(node);
        if (receiversByVrf == null) {
            continue;
        }
        for (String vrf : vrfs) {
            receiversByVrf.get(vrf).stream().filter(candidateId -> !alreadyEstablished.contains(candidateId)).forEach(candidateId -> {
                // Ensure candidate has compatible local/remote AS, isn't in same vrf as initiator
                BgpPeerConfig candidate = nc.getBgpPeerConfig(candidateId);
                if (!bgpCandidatePassesSanityChecks(neighborId, neighbor, candidateId, candidate)) {
                    return;
                }
                // Check if neighbor has any feasible local IPs compatible with this candidate
                Set<Ip> feasibleLocalIpsForPeeringWithCandidate = getFeasibleLocalIps(potentialLocalIps, candidate);
                if (feasibleLocalIpsForPeeringWithCandidate.isEmpty()) {
                    return;
                }
                if (!checkReachability) {
                    feasibleLocalIpsForPeeringWithCandidate.forEach(ip -> addEdges(neighbor, neighborId, ip, candidateId, graph, nc));
                } else {
                    initiateBgpSessions(neighborId, candidateId, neighbor, feasibleLocalIpsForPeeringWithCandidate, tracerouteEngine).stream().filter(BgpSessionInitiationResult::isSuccessful).map(initiationResult -> initiationResult.getFlow().getSrcIp()).forEach(srcIp -> addEdges(neighbor, neighborId, srcIp, candidateId, graph, nc));
                }
            });
        }
    }
}

Example 2 with BgpPeerConfig

use of org.batfish.datamodel.BgpPeerConfig in project batfish by batfish.

the class BgpTopologyUtils method addEdges.

/**
 * Adds edges in {@code graph} between the given {@link BgpPeerConfigId}s in both directions.
 */
private static void addEdges(BgpPeerConfig p1, BgpPeerConfigId id1, Ip p1LocalIp, BgpPeerConfigId id2, MutableValueGraph<BgpPeerConfigId, BgpSessionProperties> graph, NetworkConfigurations networkConfigurations) {
    BgpPeerConfig remotePeer = Objects.requireNonNull(networkConfigurations.getBgpPeerConfig(id2));
    AsPair asPair = computeAsPair(p1.getLocalAs(), p1.getConfederationAsn(), p1.getRemoteAsns(), remotePeer.getLocalAs(), remotePeer.getConfederationAsn(), remotePeer.getRemoteAsns());
    assert asPair != null;
    graph.putEdgeValue(id1, id2, BgpSessionProperties.from(p1, p1LocalIp, remotePeer, false, asPair.getLocalAs(), asPair.getRemoteAs(), asPair.getConfedSessionType()));
    graph.putEdgeValue(id2, id1, BgpSessionProperties.from(p1, p1LocalIp, remotePeer, true, asPair.getLocalAs(), asPair.getRemoteAs(), asPair.getConfedSessionType()));
}

Example 3 with BgpPeerConfig

use of org.batfish.datamodel.BgpPeerConfig in project batfish by batfish.

the class Graph method findExportRoutingPolicy.

/*
   * Find the export routing policy for a given edge
   */
@Nullable
public RoutingPolicy findExportRoutingPolicy(String router, Protocol proto, GraphEdge ge) {
    Configuration conf = _configurations.get(router);
    if (proto.isConnected()) {
        return null;
    }
    if (proto.isStatic()) {
        return null;
    }
    if (proto.isOspf()) {
        OspfProcess p = getFirstOspfProcess(conf.getDefaultVrf());
        if (p == null) {
            return null;
        }
        String exp = p.getExportPolicy();
        return conf.getRoutingPolicies().get(exp);
    }
    if (proto.isBgp()) {
        BgpPeerConfig n = findBgpNeighbor(ge);
        // if no neighbor (e.g., loopback) or no export policy, return null
        return Optional.ofNullable(n).map(BgpPeerConfig::getIpv4UnicastAddressFamily).map(AddressFamily::getExportPolicy).map(policy -> conf.getRoutingPolicies().get(policy)).orElse(null);
    }
    throw new BatfishException("TODO: findExportRoutingPolicy for " + proto.name());
}

Example 4 with BgpPeerConfig

use of org.batfish.datamodel.BgpPeerConfig in project batfish by batfish.

the class BgpSessionCompatibilityAnswererTest method createConfigurations.

/**
 * Given equally sized lists of {@link BgpPeerConfigId}s and {@link BgpPeerConfig}s, creates one
 * {@link Configuration} per ID/peer pair and returns the resulting configurations.
 */
static SortedMap<String, Configuration> createConfigurations(List<BgpPeerConfigId> ids, List<BgpPeerConfig> peers) {
    assert ids.size() == peers.size();
    SortedMap<String, Configuration> configs = new TreeMap<>();
    NetworkFactory nf = new NetworkFactory();
    for (int i = 0; i < ids.size(); i++) {
        BgpPeerConfigId id = ids.get(i);
        BgpPeerConfig peer = peers.get(i);
        // Create a configuration with a BgpProcess
        Configuration c = nf.configurationBuilder().setConfigurationFormat(ConfigurationFormat.CISCO_IOS).setHostname(id.getHostname()).build();
        Vrf vrf = nf.vrfBuilder().setOwner(c).setName(id.getVrfName()).build();
        BgpProcess bgpProc = BgpProcess.testBgpProcess(Ip.ZERO);
        vrf.setBgpProcess(bgpProc);
        configs.put(c.getHostname(), c);
        // Add interface to make IpOwners accurate
        if (peer.getLocalIp() != null && peer.getLocalIp() != Ip.AUTO) {
            nf.interfaceBuilder().setOwner(c).setVrf(vrf).setAddress(ConcreteInterfaceAddress.create(peer.getLocalIp(), 30)).build();
        }
        // Add peer in the appropriate map in the BgpProcess
        if (id.getType() == BgpPeerConfigType.ACTIVE) {
            assert id.getRemotePeerPrefix().getPrefixLength() == Prefix.MAX_PREFIX_LENGTH;
            Ip remotePeerAddress = id.getRemotePeerPrefix().getStartIp();
            bgpProc.setNeighbors(ImmutableSortedMap.of(remotePeerAddress, (BgpActivePeerConfig) peer));
        } else if (id.getType() == BgpPeerConfigType.DYNAMIC) {
            bgpProc.setPassiveNeighbors(ImmutableSortedMap.of(id.getRemotePeerPrefix(), (BgpPassivePeerConfig) peer));
        } else if (id.getType() == BgpPeerConfigType.UNNUMBERED) {
            bgpProc.setInterfaceNeighbors(ImmutableSortedMap.of(id.getPeerInterface(), (BgpUnnumberedPeerConfig) peer));
        } else {
            throw new BatfishException(String.format("Unhandled peer type %s", id.getType()));
        }
    }
    return configs;
}

Example 5 with BgpPeerConfig

use of org.batfish.datamodel.BgpPeerConfig in project batfish by batfish.

the class CiscoNxosGrammarTest method testEvpnL2L3Vni.

@Test
public void testEvpnL2L3Vni() throws IOException {
    Configuration c = parseConfig("nxos_l2_l3_vnis");
    String tenantVrfName = "tenant1";
    Ip routerId = Ip.parse("10.1.1.1");
    int tenantVrfPosition = 3;
    // All defined VXLAN Vnis
    ImmutableSortedSet<Layer2VniConfig> expectedL2Vnis = ImmutableSortedSet.of(Layer2VniConfig.builder().setVni(1111).setVrf(DEFAULT_VRF_NAME).setRouteDistinguisher(RouteDistinguisher.from(routerId, 32768)).setRouteTarget(ExtendedCommunity.target(1, 1111)).setImportRouteTarget(ExtendedCommunity.target(1, 1111).matchString()).build(), Layer2VniConfig.builder().setVni(2222).setVrf(DEFAULT_VRF_NAME).setRouteDistinguisher(RouteDistinguisher.from(routerId, 32769)).setRouteTarget(ExtendedCommunity.target(1, 2222)).setImportRouteTarget(ExtendedCommunity.target(1, 2222).matchString()).build());
    ImmutableSortedSet<Layer3VniConfig> expectedL3Vnis = ImmutableSortedSet.of(Layer3VniConfig.builder().setVni(3333).setVrf(tenantVrfName).setAdvertiseV4Unicast(true).setRouteDistinguisher(RouteDistinguisher.from(routerId, tenantVrfPosition)).setRouteTarget(ExtendedCommunity.target(1, 3333)).setImportRouteTarget(ExtendedCommunity.target(1, 3333).matchString()).build());
    BgpPeerConfig peer = c.getDefaultVrf().getBgpProcess().getActiveNeighbors().get(Ip.parse("1.1.1.1"));
    assertThat(peer.getEvpnAddressFamily(), notNullValue());
    assertThat(peer.getEvpnAddressFamily().getL2VNIs(), equalTo(expectedL2Vnis));
    assertThat(peer.getEvpnAddressFamily().getL3VNIs(), equalTo(expectedL3Vnis));
    assertThat(peer.getEvpnAddressFamily().getNveIp(), equalTo(Ip.parse("1.1.1.1")));
    assertThat(c.getVrfs().get(tenantVrfName).getBgpProcess(), notNullValue());
    // check leak configs
    {
        // bgpv4 -> evpn
        VrfLeakConfig leak = c.getDefaultVrf().getVrfLeakConfig();
        assertNotNull(leak);
        assertTrue(leak.getLeakAsBgp());
        assertThat(leak.getBgpv4ToEvpnVrfLeakConfigs(), contains(Bgpv4ToEvpnVrfLeakConfig.builder().setAttachRouteTargets(ExtendedCommunity.target(1, 3333)).setImportFromVrf(tenantVrfName).setSrcVrfRouteDistinguisher(RouteDistinguisher.from(routerId, tenantVrfPosition)).build()));
    }
    {
        // evpn -> bgpv4
        VrfLeakConfig leak = c.getVrfs().get(tenantVrfName).getVrfLeakConfig();
        assertNotNull(leak);
        assertTrue(leak.getLeakAsBgp());
        String importPolicyName = generatedEvpnToBgpv4VrfLeakPolicyName(tenantVrfName);
        assertThat(leak.getEvpnToBgpv4VrfLeakConfigs(), contains(EvpnToBgpv4VrfLeakConfig.builder().setImportFromVrf(DEFAULT_VRF_NAME).setImportPolicy(importPolicyName).build()));
        EvpnType5Route.Builder rb = EvpnType5Route.builder().setNetwork(Prefix.strict("10.0.0.0/24")).setNextHop(NextHopVtep.of(3333, Ip.parse("5.6.7.8"))).setVni(3333).setProtocol(RoutingProtocol.BGP).setOriginMechanism(OriginMechanism.LEARNED).setOriginType(OriginType.IGP).setOriginatorIp(Ip.parse("5.6.7.8")).setRouteDistinguisher(RouteDistinguisher.from(routerId, tenantVrfPosition));
        EvpnType5Route permittedRouteSingleRouteTarget = rb.setCommunities(CommunitySet.of(ExtendedCommunity.target(1, 3333))).build();
        EvpnType5Route permittedRouteMultipleRouteTargets = rb.setCommunities(CommunitySet.of(ExtendedCommunity.target(1, 3333), ExtendedCommunity.target(5, 3333))).build();
        EvpnType5Route deniedRouteWrongRouteTarget = rb.setCommunities(CommunitySet.of(ExtendedCommunity.target(5, 3333))).build();
        EvpnType5Route deniedRouteNoRouteTarget = rb.setCommunities(CommunitySet.of()).build();
        RoutingPolicy importPolicy = c.getRoutingPolicies().get(importPolicyName);
        assertRoutingPolicyPermitsRoute(importPolicy, permittedRouteSingleRouteTarget);
        assertRoutingPolicyPermitsRoute(importPolicy, permittedRouteMultipleRouteTargets);
        assertRoutingPolicyDeniesRoute(importPolicy, deniedRouteWrongRouteTarget);
        assertRoutingPolicyDeniesRoute(importPolicy, deniedRouteNoRouteTarget);
    }
}