1.4.7 Packet Tracer - Configure Router Interfaces (Instructions Answer)

R1>enable
Password: 
R1#configure terminal
R1(config)#interface g0/0
R1(config-if)#ip address 172.16.20.1 255.255.255.128
R1(config-if)#no shutdown

R1(config-if)#interface g0/1
R1(config-if)#ip address 172.16.20.129 255.255.255.128
R1(config-if)#no shutdown
R1(config-if)#

C:\>PING 172.16.20.138

Pinging 172.16.20.138 with 32 bytes of data:

Request timed out.
Reply from 172.16.20.138: bytes=32 time<1ms TTL=127
Reply from 172.16.20.138: bytes=32 time<1ms TTL=127 Reply from 172.16.20.138: bytes=32 time=13ms TTL=127 Ping statistics for 172.16.20.138: Packets: Sent = 4, Received = 3, Lost = 1 (25% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 13ms, Average = 4ms C:\>ping 64.100.1.10

Pinging 64.100.1.10 with 32 bytes of data:

Request timed out.
Reply from 64.100.1.10: bytes=32 time=2ms TTL=126
Reply from 64.100.1.10: bytes=32 time=13ms TTL=126
Reply from 64.100.1.10: bytes=32 time=1ms TTL=126

Ping statistics for 64.100.1.10:
    Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
    Minimum = 1ms, Maximum = 13ms, Average = 5ms

C:\>

R2>enable
Password: 
R2#configure terminal

R2(config)#ipv6 unicast-routing

R2(config)#interface g0/0
R2(config-if)#ipv6 address 2001:db8:c0de:12::1/64
R2(config-if)#ipv6 address FE80::2 link-local
R2(config-if)#no shutdown
R2(config-if)#exit

R2(config)#interface g0/1
R2(config-if)#ipv6 address 2001:db8:c0de:13::1/64
R2(config-if)#ipv6 address FE80::2 link-local
R2(config-if)#no shutdown

C:\>ping 2001:db8:c0de:12::a

Pinging 2001:db8:c0de:12::a with 32 bytes of data:

Reply from 2001:DB8:C0DE:12::A: bytes=32 time=13ms TTL=127
Reply from 2001:DB8:C0DE:12::A: bytes=32 time<1ms TTL=127
Reply from 2001:DB8:C0DE:12::A: bytes=32 time<1ms TTL=127
Reply from 2001:DB8:C0DE:12::A: bytes=32 time<1ms TTL=127 Ping statistics for 2001:DB8:C0DE:12::A: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 13ms, Average = 3ms C:\>ping 2001:db8:100:1::a

Pinging 2001:db8:100:1::a with 32 bytes of data:

Reply from 2001:DB8:100:1::A: bytes=32 time=15ms TTL=126
Reply from 2001:DB8:100:1::A: bytes=32 time=7ms TTL=126
Reply from 2001:DB8:100:1::A: bytes=32 time=13ms TTL=126
Reply from 2001:DB8:100:1::A: bytes=32 time=4ms TTL=126

Ping statistics for 2001:DB8:100:1::A:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 4ms, Maximum = 15ms, Average = 9ms

C:\>

! ==============================================================
!--- 1.4.7 Packet Tracer - Configure Router Interfaces
!--- ANSWER SCRIPT FOR ROUTER R1  (IPv4)
!--- Usage: copy this whole file and paste it into the R1 terminal (start at the Router> prompt). The user EXEC password is "cisco" and the privileged EXEC password is "class". Every line beginning with "!" is a comment; IOS ignores it, so pasting a comment by accident is harmless.
! ==============================================================

enable
configure terminal

! --------------------------------------------------------------
!--- Part 1: Configure IPv4 addressing on the R1 LAN interfaces
! --------------------------------------------------------------

!--- G0/0 - PC1 LAN: first host of 172.16.20.0/25 (mask 255.255.255.128).
interface g0/0
 ip address 172.16.20.1 255.255.255.128
 no shutdown
 exit

!--- G0/1 - PC2 LAN: first host of 172.16.20.128/25 (mask 255.255.255.128).
interface g0/1
 ip address 172.16.20.129 255.255.255.128
 no shutdown
 exit

!--- S0/0/0 - WAN link: the lab states the serial interface is ALREADY configured, so this block is optional. Re-applying the same values is harmless (idempotent).
interface s0/0/0
 ip address 209.165.200.225 255.255.255.252
 no shutdown
 exit

end

! --------------------------------------------------------------
!--- Save the configuration to NVRAM. (Press Enter when prompted.)
! --------------------------------------------------------------
copy running-config startup-config


! ==============================================================
!--- Verification:
!---   show ip interface brief  -> G0/0, G0/1, S0/0/0 all up/up
!---   show ip route            -> the two connected /25 LANs
!--- From PC1 and PC2: ping each other and the Dual Stack Server.
! ==============================================================

! ==============================================================
!--- 1.4.7 Packet Tracer - Configure Router Interfaces
!--- ANSWER SCRIPT FOR ROUTER R2  (IPv6)
!--- Usage: copy this whole file and paste it into the R2 terminal (start at the Router> prompt). The user EXEC password is "cisco" and the privileged EXEC password is "class". Every line beginning with "!" is a comment; IOS ignores it, so pasting a comment by accident is harmless.
! ==============================================================

enable
configure terminal

! --------------------------------------------------------------
!--- Part 2: Configure IPv6 addressing on the R2 LAN interfaces
! --------------------------------------------------------------

!--- REQUIRED: enable IPv6 routing. Without this, R2 will NOT forward IPv6 packets between its two LANs and will not send Router Advertisements.
ipv6 unicast-routing

!--- G0/0 - PC3 LAN: global unicast + link-local. The link-local fe80::2 is REQUIRED here because the Addressing Table gives PC3 the default gateway fe80::2
interface g0/0
 ipv6 address 2001:db8:c0de:12::1/64
 ipv6 address fe80::2 link-local
 no shutdown
 exit

!--- G0/1 - PC4 LAN: global unicast + the same link-local fe80::2 (PC4's default gateway). Reusing the same link-local on different interfaces is valid: link-local packets never leave their own link.
interface g0/1
 ipv6 address 2001:db8:c0de:13::1/64
 ipv6 address fe80::2 link-local
 no shutdown
 exit

!--- S0/0/1 - WAN link: the lab states the serial interface is ALREADY configured, so this block is optional. Re-applying the same values is harmless.
interface s0/0/1
 ipv6 address 2001:db8:c0de:11::1/64
 ipv6 address fe80::2 link-local
 no shutdown
 exit

end

! --------------------------------------------------------------
!--- Save the configuration to NVRAM. (Press Enter when prompted.)
! --------------------------------------------------------------
copy running-config startup-config


! ==============================================================
!--- Verification:
!---   show ipv6 interface brief -> each interface shows its GUA + fe80::2
!---   show ipv6 route           -> the connected IPv6 LANs
!--- From PC3 and PC4: ping each other and the Dual Stack Server.
! ==============================================================