use of org.batfish.datamodel.OspfExternalType1Route in project batfish by batfish.
the class VirtualRouter method propagateOspfExternalRoutes.
public boolean propagateOspfExternalRoutes(Map<String, Node> nodes, Topology topology) {
boolean changed = false;
String node = _c.getHostname();
OspfProcess proc = _vrf.getOspfProcess();
if (proc != null) {
int admin = RoutingProtocol.OSPF.getDefaultAdministrativeCost(_c.getConfigurationFormat());
SortedSet<Edge> edges = topology.getNodeEdges().get(node);
if (edges == null) {
// there are no edges, so OSPF won't produce anything
return false;
}
for (Edge edge : edges) {
if (!edge.getNode1().equals(node)) {
continue;
}
String connectingInterfaceName = edge.getInt1();
Interface connectingInterface = _vrf.getInterfaces().get(connectingInterfaceName);
if (connectingInterface == null) {
// wrong vrf, so skip
continue;
}
String neighborName = edge.getNode2();
Node neighbor = nodes.get(neighborName);
String neighborInterfaceName = edge.getInt2();
OspfArea area = connectingInterface.getOspfArea();
Configuration nc = neighbor._c;
Interface neighborInterface = nc.getInterfaces().get(neighborInterfaceName);
String neighborVrfName = neighborInterface.getVrfName();
VirtualRouter neighborVirtualRouter = nodes.get(neighborName)._virtualRouters.get(neighborVrfName);
OspfArea neighborArea = neighborInterface.getOspfArea();
if (connectingInterface.getOspfEnabled() && !connectingInterface.getOspfPassive() && neighborInterface.getOspfEnabled() && !neighborInterface.getOspfPassive() && area != null && neighborArea != null && area.getName().equals(neighborArea.getName())) {
/*
* We have an ospf neighbor relationship on this edge. So we
* should add all ospf external type 1(2) routes from this
* neighbor into our ospf external type 1(2) staging rib. For
* type 1, the cost of the route increases each time. For type 2,
* the cost remains constant, but we must keep track of cost to
* advertiser as a tie-breaker.
*/
long connectingInterfaceCost = connectingInterface.getOspfCost();
long incrementalCost = proc.getMaxMetricTransitLinks() != null ? proc.getMaxMetricTransitLinks() : connectingInterfaceCost;
for (OspfExternalType1Route neighborRoute : neighborVirtualRouter._prevOspfExternalType1Rib.getRoutes()) {
long oldArea = neighborRoute.getArea();
long connectionArea = area.getName();
long newArea;
long baseMetric = neighborRoute.getMetric();
long baseCostToAdvertiser = neighborRoute.getCostToAdvertiser();
newArea = connectionArea;
if (oldArea != OspfRoute.NO_AREA) {
Long maxMetricSummaryNetworks = neighborVirtualRouter._vrf.getOspfProcess().getMaxMetricSummaryNetworks();
if (connectionArea != oldArea) {
if (connectionArea != 0L && oldArea != 0L) {
continue;
}
if (maxMetricSummaryNetworks != null) {
baseMetric = maxMetricSummaryNetworks + neighborRoute.getLsaMetric();
baseCostToAdvertiser = maxMetricSummaryNetworks;
}
}
}
long newMetric = baseMetric + incrementalCost;
long newCostToAdvertiser = baseCostToAdvertiser + incrementalCost;
OspfExternalType1Route newRoute = new OspfExternalType1Route(neighborRoute.getNetwork(), neighborInterface.getAddress().getIp(), admin, newMetric, neighborRoute.getLsaMetric(), newArea, newCostToAdvertiser, neighborRoute.getAdvertiser());
if (_ospfExternalType1StagingRib.mergeRoute(newRoute)) {
changed = true;
}
}
for (OspfExternalType2Route neighborRoute : neighborVirtualRouter._prevOspfExternalType2Rib.getRoutes()) {
long oldArea = neighborRoute.getArea();
long connectionArea = area.getName();
long newArea;
long baseCostToAdvertiser = neighborRoute.getCostToAdvertiser();
if (oldArea == OspfRoute.NO_AREA) {
newArea = connectionArea;
} else {
newArea = oldArea;
Long maxMetricSummaryNetworks = neighborVirtualRouter._vrf.getOspfProcess().getMaxMetricSummaryNetworks();
if (connectionArea != oldArea && maxMetricSummaryNetworks != null) {
baseCostToAdvertiser = maxMetricSummaryNetworks;
}
}
long newCostToAdvertiser = baseCostToAdvertiser + incrementalCost;
OspfExternalType2Route newRoute = new OspfExternalType2Route(neighborRoute.getNetwork(), neighborInterface.getAddress().getIp(), admin, neighborRoute.getMetric(), neighborRoute.getLsaMetric(), newArea, newCostToAdvertiser, neighborRoute.getAdvertiser());
if (_ospfExternalType2StagingRib.mergeRoute(newRoute)) {
changed = true;
}
}
}
}
}
return changed;
}
Aggregations