Examples with Bgp org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp used on opensource projects

Example 31 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class AbstractBestPathSelector method isExistingPathBetter.

/**
 * Chooses best route according to BGP best path selection.
 *
 * @param state attributes of the new route
 * @return true if the existing path is better, false if the new path is better
 */
protected boolean isExistingPathBetter(@Nonnull final BestPathState state) {
    /*
         * 2. prefer path with higher LOCAL_PREF
         *
         * FIXME: for eBGP cases (when the LOCAL_PREF is missing), we should assign a policy-based preference
         *        before we ever get here.
         */
    if (this.bestState.getLocalPref() == null && state.getLocalPref() != null) {
        return true;
    }
    if (this.bestState.getLocalPref() != null && state.getLocalPref() == null) {
        return false;
    }
    if (state.getLocalPref() != null && state.getLocalPref() > this.bestState.getLocalPref()) {
        return false;
    }
    if (state.getLocalPref() != null && state.getLocalPref() < this.bestState.getLocalPref()) {
        return true;
    }
    // 4. prefer the path with the shortest AS_PATH.
    if (this.bestState.getAsPathLength() != state.getAsPathLength()) {
        return this.bestState.getAsPathLength() < state.getAsPathLength();
    }
    // - IGP is lower than Exterior Gateway Protocol (EGP), and EGP is lower than INCOMPLETE
    if (!this.bestState.getOrigin().equals(state.getOrigin())) {
        final BgpOrigin bo = this.bestState.getOrigin();
        final BgpOrigin no = state.getOrigin();
        // This trick relies on the order in which the values are declared in the model.
        return no.ordinal() > bo.ordinal();
    }
    // FIXME: we should be able to cache the best AS
    final Long bestAs = this.bestState.getPeerAs();
    final Long newAs = state.getPeerAs();
    /*
         * Checks 6 and 7 are mutually-exclusive, as MEDs are comparable
         * only when the routes originated from the same AS. On the other
         * hand, when they are from the same AS, they are in the same iBGP/eBGP
         * relationship.
         *
         */
    if (bestAs.equals(newAs)) {
        // 6. prefer the path with the lowest multi-exit discriminator (MED)
        if (this.bestState.getMultiExitDisc() != null || state.getMultiExitDisc() != null) {
            final Long bmed = this.bestState.getMultiExitDisc();
            final Long nmed = state.getMultiExitDisc();
            return nmed > bmed;
        }
    } else {
        /*
             * 7. prefer eBGP over iBGP paths
             *
             * EBGP is peering between two different AS, whereas IBGP is between same AS (Autonomous System),
             * so we just compare the AS numbers to our AS.
             *
             * FIXME: we should know this information from the peer directly.
             */
        if (this.ourAs != bestAs && this.ourAs == newAs) {
            return true;
        }
    }
    /*
         * 10. Prefer the route that comes from the BGP router with the lowest router ID.
         *
         * This is normally guaranteed by the iteration order of our caller, which runs selection
         * in the order of increasing router ID, but RFC-4456 Route Reflection throws a wrench into that.
         *
         * With RFC-5004, this gets a bit easier, because it completely eliminates step f) and later :-)
         *
         * RFC-5004 states that this algorithm should end here and select existing path over new path in the
         * best path selection process. Benefits are listed in the RFC: @see http://tools.ietf.org/html/rfc500
         * - This algorithm SHOULD NOT be applied when either path is from a BGP Confederation peer.
         *  - not applicable, we don't deal with confederation peers
         * - The algorithm SHOULD NOT be applied when both paths are from peers with an identical BGP identifier
         *   (i.e., there exist parallel BGP sessions between two BGP speakers).
         *  - not applicable, BUG-2631 prevents parallel sessions to be created.
         */
    return true;
}

Example 32 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class BGPPeerTrackerMock method mockPeerTracker.

private void mockPeerTracker() {
    final PeerId pId = new PeerId("bgp://0.0.0.1");
    doReturn(this.peerMock).when(this.peerTracker).getPeer(eq(pId));
    doReturn(this.peerMock).when(this.peerTracker).getPeer(eq(PEER_ID));
    doReturn(true).when(this.peerMock).supportsTable(Mockito.eq(TABLES_KEY));
    doReturn(PeerRole.Ibgp).when(this.peerMock).getRole();
    doReturn(this.peerMock2).when(this.peerTracker).getPeer(eq(PEER_ID2));
    doReturn(false).when(this.peerMock2).supportsTable(Mockito.eq(TABLES_KEY));
}

Example 33 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class InitiationHandler method serializeMessageBody.

@Override
public void serializeMessageBody(final Notification message, final ByteBuf buffer) {
    Preconditions.checkArgument(message instanceof InitiationMessage, "Incorrect instance of BGP message. The Initiation Message is expected.");
    final InitiationMessage initiation = (InitiationMessage) message;
    serializeTlvs(initiation.getTlvs(), buffer);
}

Example 34 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class PeerUpHandler method parseMessageBody.

@Override
public Notification parseMessageBody(final ByteBuf bytes) throws BmpDeserializationException {
    final PeerUpNotificationBuilder peerUpNot = new PeerUpNotificationBuilder().setPeerHeader(parsePerPeerHeader(bytes));
    if (peerUpNot.getPeerHeader().isIpv4()) {
        bytes.skipBytes(Ipv6Util.IPV6_LENGTH - Ipv4Util.IP4_LENGTH);
        peerUpNot.setLocalAddress(new IpAddress(Ipv4Util.addressForByteBuf(bytes)));
    } else {
        peerUpNot.setLocalAddress(new IpAddress(Ipv6Util.addressForByteBuf(bytes)));
    }
    peerUpNot.setLocalPort(new PortNumber(bytes.readUnsignedShort()));
    peerUpNot.setRemotePort(new PortNumber(bytes.readUnsignedShort()));
    try {
        final Notification opSent = this.msgRegistry.parseMessage(bytes.readSlice(getBgpMessageLength(bytes)), null);
        requireNonNull(opSent, "Error on parse Sent OPEN Message, Sent OPEN Message is null");
        Preconditions.checkArgument(opSent instanceof OpenMessage, "An instance of OpenMessage notification is required");
        final OpenMessage sent = (OpenMessage) opSent;
        final Notification opRec = this.msgRegistry.parseMessage(bytes.readSlice(getBgpMessageLength(bytes)), null);
        requireNonNull(opRec, "Error on parse Received  OPEN Message, Received  OPEN Message is null");
        Preconditions.checkArgument(opRec instanceof OpenMessage, "An instance of OpenMessage notification is required");
        final OpenMessage received = (OpenMessage) opRec;
        peerUpNot.setSentOpen(new SentOpenBuilder(sent).build());
        peerUpNot.setReceivedOpen(new ReceivedOpenBuilder(received).build());
        final InformationBuilder infos = new InformationBuilder();
        if (bytes.isReadable()) {
            parseTlvs(infos, bytes);
            peerUpNot.setInformation(infos.build());
        }
    } catch (final BGPDocumentedException | BGPParsingException e) {
        throw new BmpDeserializationException("Error while parsing BGP Open Message.", e);
    }
    return peerUpNot.build();
}

Example 35 with Bgp

use of org.opendaylight.yang.gen.v1.urn.ericsson.params.xml.ns.yang.ebgp.rev150901.Bgp in project bgpcep by opendaylight.

the class AbstractBGPDispatcherTest method createServer.

Channel createServer(final InetSocketAddress serverAddress) {
    this.registry.addPeer(new IpAddress(new Ipv4Address(serverAddress.getAddress().getHostAddress())), this.serverListener, createPreferences(serverAddress));
    LoggerFactory.getLogger(AbstractBGPDispatcherTest.class).info("createServer");
    final ChannelFuture future = this.serverDispatcher.createServer(serverAddress);
    future.addListener(future1 -> Preconditions.checkArgument(future1.isSuccess(), "Unable to start bgp server on %s", future1.cause()));
    waitFutureSuccess(future);
    return future.channel();
}