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

Example 6 with OspfIntraAreaRoute

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

the class VirtualRouter method propagateOspfInternalRoutesFromNeighbor.

/**
 * Propagate OSPF Internal routes from a single neighbor.
 *
 * @param proc The receiving OSPF process
 * @param neighbor the neighbor
 * @param connectingInterface interface on which we are connected to the neighbor
 * @param neighborInterface interface that the neighbor uses to connect to us
 * @param adminCost route administrative distance
 * @return true if new routes have been added to our staging RIB
 */
boolean propagateOspfInternalRoutesFromNeighbor(OspfProcess proc, Node neighbor, Interface connectingInterface, Interface neighborInterface, int adminCost) {
    OspfArea area = connectingInterface.getOspfArea();
    OspfArea neighborArea = neighborInterface.getOspfArea();
    // Ensure that the link (i.e., both interfaces) has OSPF enabled and OSPF areas are set
    if (!connectingInterface.getOspfEnabled() || connectingInterface.getOspfPassive() || !neighborInterface.getOspfEnabled() || neighborInterface.getOspfPassive() || area == null || neighborArea == null || !area.getName().equals(neighborArea.getName())) {
        return false;
    }
    /*
     * An OSPF neighbor relationship exists on this edge. So we examine all intra- and inter-area
     * routes belonging to the neighbor to see what should be propagated to this router. We add the
     * incremental cost associated with our settings and the connecting interface, and use the
     * neighborInterface's address as the next hop ip.
     */
    int connectingInterfaceCost = connectingInterface.getOspfCost();
    long incrementalCost = proc.getMaxMetricTransitLinks() != null ? proc.getMaxMetricTransitLinks() : connectingInterfaceCost;
    Long areaNum = area.getName();
    VirtualRouter neighborVirtualRouter = neighbor._virtualRouters.get(neighborInterface.getVrfName());
    boolean changed = false;
    for (OspfIntraAreaRoute neighborRoute : neighborVirtualRouter._ospfIntraAreaRib.getRoutes()) {
        changed |= propagateOspfIntraAreaRoute(neighborRoute, incrementalCost, neighborInterface, adminCost, areaNum);
        changed |= propagateOspfInterAreaRouteFromIntraAreaRoute(neighbor, neighborRoute, incrementalCost, neighborInterface, adminCost, areaNum);
    }
    for (OspfInterAreaRoute neighborRoute : neighborVirtualRouter._ospfInterAreaRib.getRoutes()) {
        changed |= propagateOspfInterAreaRouteFromInterAreaRoute(neighbor, neighborRoute, incrementalCost, neighborInterface, adminCost, areaNum);
    }
    return changed;
}