Configure an IPv6/IPv4 Router Interface and Configure an IPv4 Loopback Interface

1. Configure an IPv6 Router Interface

IPv6

R1(config)#interface gigabitethernet 0/0
R1(Config-if)#descripiton link to LAN 1
R1(Config-if)#ipv6 address 2001:db8:acad:1::1/64
R1(Config-if)#no shutdown
R1(Config-if)#exit


R1(config)#interface gigabitethernet 0/1
R1(Config-if)#descripiton link to LAN 1
R1(Config-if)#ipv6 address 2001:db8:acad:2::1/64
R1(Config-if)#no shutdown
R1(Config-if)#exit

R1(config)#interface serial 0/0/0
R1(Config-if)#descripiton link to R2
R1(Config-if)#ipv6 address 2001:db8:acad:3::1/64
R1(Config-if)#clock rate 128000
R1(Config-if)#no shutdown

IPv4

R1(config)#interface gigabitethernet 0/0
R1(Config-if)#descripiton link to LAN 1
R1(Config-if)#ip address 192.168.10.1 255.255.255.0
R1(Config-if)#no shutdown
R1(Config-if)#exit


R1(config)#interface gigabitethernet 0/1
R1(Config-if)#descripiton link to LAN 1
R1(Config-if)#ip address 192.168.11.1 255.255.255.0
R1(Config-if)#no shutdown
R1(Config-if)#exit

R1(config)#interface serial 0/0/0
R1(Config-if)#descripiton link to R2
R1(Config-if)#ip address 209.165.200.225 255.255.255.252
R1(Config-if)#clock rate 128000
R1(Config-if)#no shutdown

2.Configure an IPv4 Loopback Interface

R1(config)#interface loopback 0

R1(Config-if)#ip address 10.0.0.1 255.255.255.0

R1(Config-if)#Exit

IPV4

R1#show ip interface brief

R1#show ip route

IPV6

R1#show ipv6 interface brief

R1#show ipv6 route