R2#show running-config
Building configuration...

Current configuration : 2620 bytes
!
! Last configuration change at 15:06:31 UTC Fri Nov 15 2019
!
version 15.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
!
!
!
!
!
!
!
!
!
!
!
!
!
no ip domain lookup
ip cef
ipv6 unicast-routing
ipv6 cef
multilink bundle-name authenticated
!
!
key chain mychain
 key 1
  key-string cisco
cts logging verbose
!
!
license udi pid CISCO1941/K9 sn FCZ2125B0F2
!
!
!
redundancy
!
!
!
!
!
!
interface Loopback0
 no ip address
 ipv6 address 2001:DB8:CAFE:100::1/64
 ipv6 ospf 1 area 0
!
interface Loopback1
 no ip address
 ipv6 address 2001:DB8:ABCD:100::1/64
 ipv6 ospf 1 area 0
!
interface Loopback209
 ip address 209.65.12.254 255.255.255.252
!
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
 description Link to R1
 ip address 20.10.10.2 255.255.255.252
 ip authentication mode eigrp 205 md5
 ip authentication key-chain eigrp 205 mychain
 ipv6 address FE80::2 link-local
 ipv6 address 2001:DB8:ABCD:10::2/64
 ipv6 eigrp 205
!
interface Serial0/0/1
 bandwidth 128000
 ip address 20.10.10.5 255.255.255.252
 ip ospf authentication message-digest
 ip ospf message-digest-key 1 md5 cisco
 ipv6 address FE80::2 link-local
 ipv6 address 2001:DB8:ABCD:20::1/64
 ipv6 ospf 1 area 0
 clock rate 128000
!
!
router eigrp 205
 distribute-list OSPF20-filter out ospf 1
 network 20.10.10.0 0.0.0.3
 redistribute ospf 1 metric 128000 100 255 1 1500
 redistribute static
 passive-interface default
 no passive-interface Serial0/0/0
!
router ospf 1
 router-id 2.2.2.2
 redistribute eigrp 205 subnets
 passive-interface default
 no passive-interface Serial0/0/1
 network 20.10.10.4 0.0.0.3 area 0
 default-information originate
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 Loopback209
!
ip access-list standard OSPF20-filter
 deny   172.26.20.0 0.0.0.255
 permit any
!
ipv6 router eigrp 205
 redistribute ospf 1 metric 128000 100 255 1 1500
 redistribute connected
!
ipv6 router ospf 1
 redistribute connected
 redistribute eigrp 205
 redistribute static
!
!
!
!
control-plane
!
!
!
line con 0
 logging synchronous
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 none
!
scheduler allocate 20000 1000
!
end

R2#sh
R2#show ip int
R2#show ip interface br
R2#show ip interface 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                20.10.10.2      YES manual up                    up
Serial0/0/1                20.10.10.5      YES manual up                    up
Loopback0                  unassigned      YES unset  up                    up
Loopback1                  unassigned      YES unset  up                    up
Loopback209                209.65.12.254   YES manual up                    up
R2# sh
R2# show ip rou
R2# 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
       a - application route
       + - replicated route, % - next hop override

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

S*    0.0.0.0/0 is directly connected, Loopback209
      20.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C        20.10.10.0/30 is directly connected, Serial0/0/0
L        20.10.10.2/32 is directly connected, Serial0/0/0
C        20.10.10.4/30 is directly connected, Serial0/0/1
L        20.10.10.5/32 is directly connected, Serial0/0/1
      172.16.0.0/17 is subnetted, 1 subnets
D        172.16.0.0 [90/2297856] via 20.10.10.1, 00:19:12, Serial0/0/0
      172.26.0.0/24 is subnetted, 4 subnets
O IA     172.26.20.0 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA     172.26.21.0 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA     172.26.22.0 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA     172.26.23.0 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA  192.168.40.0/24 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA  192.168.45.0/24 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA  192.168.50.0/24 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA  192.168.55.0/24 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA  192.168.60.0/24 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
O IA  192.168.65.0/24 [110/2] via 20.10.10.6, 00:53:14, Serial0/0/1
      209.65.12.0/24 is variably subnetted, 2 subnets, 2 masks
C        209.65.12.252/30 is directly connected, Loopback209
L        209.65.12.254/32 is directly connected, Loopback209
R2#sh
R2#show ipv
R2#show ipv6 int
R2#show ipv6 interface br
R2#show ipv6 interface brief
Em0/0                  [administratively down/down]
    unassigned
GigabitEthernet0/0     [administratively down/down]
    unassigned
GigabitEthernet0/1     [administratively down/down]
    unassigned
Serial0/0/0            [up/up]
    FE80::2
    2001:DB8:ABCD:10::2
Serial0/0/1            [up/up]
    FE80::2
    2001:DB8:ABCD:20::1
Loopback0              [up/up]
    FE80::A2E0:AFFF:FEE8:6AC0
    2001:DB8:CAFE:100::1
Loopback1              [up/up]
    FE80::A2E0:AFFF:FEE8:6AC0
    2001:DB8:ABCD:100::1
Loopback209            [up/up]
    unassigned
R2# sh
R2# show ipv
R2# show ipv6 rou
R2# show ipv6 route
IPv6 Routing Table - default - 11 entries
Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
       B - BGP, R - RIP, I1 - ISIS L1, I2 - ISIS L2
       IA - ISIS interarea, IS - ISIS summary, D - EIGRP, EX - EIGRP external
       ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect
       O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2, a - Application
O   2001:DB8:9A:10AA::1/128 [110/1]
     via FE80::2ED0:2DFF:FE90:2440, Serial0/0/1
C   2001:DB8:ABCD:10::/64 [0/0]
     via Serial0/0/0, directly connected
L   2001:DB8:ABCD:10::2/128 [0/0]
     via Serial0/0/0, receive
C   2001:DB8:ABCD:20::/64 [0/0]
     via Serial0/0/1, directly connected
L   2001:DB8:ABCD:20::1/128 [0/0]
     via Serial0/0/1, receive
C   2001:DB8:ABCD:100::/64 [0/0]
     via Loopback1, directly connected
L   2001:DB8:ABCD:100::1/128 [0/0]
     via Loopback1, receive
D   2001:DB8:CAFE:10::/64 [90/2297856]
     via FE80::1, Serial0/0/0
C   2001:DB8:CAFE:100::/64 [0/0]
     via Loopback0, directly connected
L   2001:DB8:CAFE:100::1/128 [0/0]
     via Loopback0, receive
L   FF00::/8 [0/0]
     via Null0, receive
R2#