R3#show running-config Building configuration... Current configuration : 1935 bytes ! ! Last configuration change at 10:15:19 UTC Wed May 15 2019 version 15.2 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R3 ! boot-start-marker boot-end-marker ! ! ! no aaa new-model ! ip cef ! ! ! ! R3# R3# R3# R3# R3# R3# R3# R3# R3#show running-config Building configuration... Current configuration : 1935 bytes ! ! Last configuration change at 10:15:19 UTC Wed May 15 2019 version 15.2 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname R3 ! boot-start-marker boot-end-marker ! ! ! no aaa new-model ! ip cef ! ! ! ! ! ! no ip domain lookup ipv6 unicast-routing ipv6 cef ! multilink bundle-name authenticated ! ! ! ! license udi pid CISCO2901/K9 sn FCZ182293KB ! ! ! redundancy ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Loopback6 no ip address ipv6 address 2001:DB8:CAFE:1::/64 eui-64 ! interface Loopback10 ip address 192.168.10.1 255.255.255.0 ! interface Loopback20 ip address 192.168.20.1 255.255.255.0 ! interface Loopback30 ip address 192.168.30.1 255.255.255.0 ! interface Loopback40 ip address 192.168.40.1 255.255.255.0 ! interface Embedded-Service-Engine0/0 no ip address shutdown ! interface GigabitEthernet0/0 no ip address shutdown duplex auto speed auto ! interface GigabitEthernet0/1 no ip address shutdown duplex auto speed auto ! interface Serial0/0/0 no ip address shutdown clock rate 2000000 ! interface Serial0/0/1 description connection to R2 ip address 192.168.4.6 255.255.255.252 ipv6 address 2001:DB8:CAFE:2::/64 eui-64 clock rate 2000000 ! router ospf 1 passive-interface Loopback6 passive-interface Loopback10 passive-interface Loopback20 passive-interface Loopback30 passive-interface Loopback40 network 192.168.0.0 0.0.0.255 area 10 ! router ospf 10 redistribute ospf 20 redistribute ospf 30 ! ip forward-protocol nd ! no ip http server no ip http secure-server ! ! ipv6 route 2001:DB8:ACAD:1::/64 Serial0/0/1 ipv6 route 2001:DB8:CAFE:1::/64 Serial0/0/1 ! ! ! control-plane ! ! ! line con 0 line aux 0 line 2 no activation-character no exec transport preferred none transport output pad telnet rlogin lapb-ta mop udptn v120 ssh stopbits 1 line vty 0 4 login transport input all ! scheduler allocate 20000 1000 ! end R3#show ip int brief Interface IP-Address OK? Method Status Protocol Embedded-Service-Engine0/0 unassigned YES unset administratively down down GigabitEthernet0/0 unassigned YES unset administratively down down GigabitEthernet0/1 unassigned YES unset administratively down down Serial0/0/0 unassigned YES unset administratively down down Serial0/0/1 192.168.4.6 YES manual up up Loopback6 unassigned YES unset up up Loopback10 192.168.10.1 YES manual up up Loopback20 192.168.20.1 YES manual up up Loopback30 192.168.30.1 YES manual up up Loopback40 192.168.40.1 YES manual up up R3#show ip route Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP + - replicated route, % - next hop override Gateway of last resort is not set 192.168.4.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.4.4/30 is directly connected, Serial0/0/1 L 192.168.4.6/32 is directly connected, Serial0/0/1 192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.10.0/24 is directly connected, Loopback10 L 192.168.10.1/32 is directly connected, Loopback10 192.168.20.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.20.0/24 is directly connected, Loopback20 L 192.168.20.1/32 is directly connected, Loopback20 192.168.30.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.30.0/24 is directly connected, Loopback30 L 192.168.30.1/32 is directly connected, Loopback30 192.168.40.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.40.0/24 is directly connected, Loopback40 L 192.168.40.1/32 is directly connected, Loopback40