Operation Manual – IPv4 RoutingH3C S5500-EI Series Ethernet Switches Chapter 3 OSPF Configuration3-48# On Switch D, ping the IP address 10.4.1.1 to check connectivity.[SwitchD] ping 10.4.1.1PING 10.4.1.1: 56 data bytes, press CTRL_C to breakRequest time outReply from 10.4.1.1: bytes=56 Sequence=2 ttl=253 time=15 msReply from 10.4.1.1: bytes=56 Sequence=3 ttl=253 time=1 msReply from 10.4.1.1: bytes=56 Sequence=4 ttl=253 time=16 msReply from 10.4.1.1: bytes=56 Sequence=5 ttl=253 time=1 ms--- 10.4.1.1 ping statistics ---5 packet(s) transmitted4 packet(s) received20.00% packet lossround-trip min/avg/max = 1/8/16 ms3.10.2 Configuring an OSPF Stub AreaI. Network requirementsThe following figure shows an AS is split into three areas, where all switches run OSPF.Switch A and Switch B act as ABRs to forward routing information between areas.Switch D acts as the ASBR to redistribute routes (static routes).It is required to configure Area 1 as a Stub area, reducing LSAs to this area withoutaffecting route reachability.II. Network diagramFigure 3-22 Network diagram for OSPF Stub area configuration1) Configure IP addresses for interfaces (omitted).2) Configure OSPF basic functions (refer to Configuring OSPF Basic Functions).3) Configure Switch D to redistribute static routes.[SwitchD] ip route-static 3.1.2.1 24 10.5.1.2[SwitchD] ospf