<?xml version="1.0"?>
<OSPFASConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="OSPF.xsd">

  <!-- Areas -->
  <Area id="0.0.0.0">
    <AddressRange address="R1>switch1" mask="R1>switch1" />
    <AddressRange address="R1>R2" mask="R1>R2" />
        
    <AddressRange address="R2>switch2" mask="R2>switch2" />
    <AddressRange address="R2>R1" mask="R2>R1" />
    
    <AddressRange address="R3>switch3" mask="R3>switch3" />
    <AddressRange address="R3>R4" mask="R3>R4" />
    
    <AddressRange address="R4>switch4" mask="R4>switch4" />
    <AddressRange address="R4>R3" mask="R4>R3" />
  </Area>

  <Area id="0.0.0.1">
    <AddressRange address="R2>R5" mask="R2>R5" />
    
    <AddressRange address="R3>R5" mask="R3>R5" />        
    
    <AddressRange address="R5>R2" mask="R5>R2" />  
    <AddressRange address="R5>R3" mask="R5>R3" /> 
    <AddressRange address="R5>switch5" mask="R5>switch5" /> 
    <AddressRange address="R5>switch6" mask="R5>switch6" /> 
  </Area>

  <!-- Routers -->
  <Router name="R1" RFC1583Compatible="true">
    <BroadcastInterface ifName="eth0" areaID="0.0.0.0" interfaceMode="Passive" />
    <PointToPointInterface ifName="ppp0" areaID="0.0.0.0" />
  </Router>

  <Router name="R2" RFC1583Compatible="true">
    <BroadcastInterface ifName="eth0" areaID="0.0.0.0" interfaceMode="Passive" />
    <PointToPointInterface ifName="ppp0" areaID="0.0.0.0" />
    <PointToPointInterface ifName="ppp1" areaID="0.0.0.1" />
    <VirtualLink endPointRouterID="R3%routerId" transitAreaID="0.0.0.1" />
  </Router>
  
  <Router name="R3" RFC1583Compatible="true">
    <BroadcastInterface ifName="eth0" areaID="0.0.0.0" interfaceMode="Passive" />
    <PointToPointInterface ifName="ppp0" areaID="0.0.0.0" />
    <PointToPointInterface ifName="ppp1" areaID="0.0.0.1" />
    <VirtualLink endPointRouterID="R2%routerId" transitAreaID="0.0.0.1" />
  </Router>
  
  <Router name="R4" RFC1583Compatible="true">
    <BroadcastInterface ifName="eth0" areaID="0.0.0.0" interfaceMode="Passive" />
    <PointToPointInterface ifName="ppp0" areaID="0.0.0.0" />
  </Router>
  
  <Router name="R5" RFC1583Compatible="true">
    <BroadcastInterface ifName="eth0" areaID="0.0.0.1" interfaceMode="Passive" />
    <BroadcastInterface ifName="eth1" areaID="0.0.0.1" interfaceMode="Passive" />
    <PointToPointInterface ifName="ppp0" areaID="0.0.0.1" />
    <PointToPointInterface ifName="ppp1" areaID="0.0.0.1" />
  </Router>

</OSPFASConfig>
