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IPv4 and IPv6 Addressing 1

Topology

Tasks:

Configure IPv4 and IPv6 connectivity between two routers. For IPv4, use a /29 network from the 172.16.100.0/24 private range. For IPv6, use the EUI-64 method for generating the interface ID from the first /64 subnet of the 2001:db8:abcd::/48 prefix.

  1. Using FastEthernet0/0 on routers R1 and R2, configure the next usable /29 subnet from the 172.16.100.0/24 range. The network 172.16.100.0/29 is unavailable.
  2. For the IPv4 /29 subnet, router R1 must be configured with the first usable host address.
  3. For the IPv4 /29 subnet, router R2 must be configured with the last usable host address.
  4. For the IPv6 addressing, configure the routers using the EUI-64 method for IPv6 address generation on the Ethernet0/0 interfaces. Use the prefix 2001:db8:abcd::/64.
  5. Verify that pings work between the routers on both the IPv4 and IPv6 address ranges.

Solution:

Task 1: Using FastEthernet0/0 on routers R1 and R2, configure the next usable /29 subnet from the 172.16.100.0/24 range. The network 172.16.100.0/29 is unavailable.

The next /29 subnet after 172.16.100.0/29 is 172.16.100.8/29 which ranges from 172.16.100.9 - 172.16.100.15. The first usable IP is 172.16.100.9 and last usable IP is 172.16.100.14 as the 172.16.100.15 is the broadcast address of the subnet. The prefix /29 is equal to subnet mask 255.255.255.248.

 

Task 2: For the IPv4 /29 subnet, router R1 must be configured with the first usable host address.

Assign 172.16.100.9 to FastEthernet0/0 interface of R1 as its the first usable IP.

On R1:

R1#configure terminal
R1(config)#interface f0/0
R1(config-if)#ip address 172.16.100.9 255.255.255.248
R1(config-if)#no shut

 

Task 3: For the IPv4 /29 subnet, router R2 must be configured with the last usable host address.

Assign 172.16.100.14 to FastEthernet0/0 interface of R1 as its the last usable IP.

On R2:

R2#configure terminal
R2(config)#interface f0/0
R2(config-if)#ip address 172.16.100.14 255.255.255.248
R2(config-if)#no shut

 

Task 4: For the IPv6 addressing, configure the routers using the EUI-64 method for IPv6 address generation on the Ethernet0/0 interfaces. Use the prefix 2001:db8:abcd::/64.

Enable IPv6 on the interface and assign an IPv6 address using EUI-64 method. The prefix given is 2001:db8:abcd::/64.

On R1:

R1(config-if)#ipv6 enable
R1(config-if)#ipv6 address 2001:db8:abcd::/64 eui-64

Enable IPv6 on the interface and assign an IPv6 address using EUI-64 method.

On R2:

R1(config-if)#ipv6 enable
R1(config-if)#ipv6 address 2001:db8:abcd::/64 eui-64

 

Task 5: Verify that pings work between the routers on both the IPv4 and IPv6 address ranges.

Test the connectivity between the routers by pinging.

R1#ping 172.16.100.14

Use show command show ipv6 interface brief on R2 to check the EUI-64 generated address then ping from R1.

R1#ping ipv6 2001:db8:abcd::<R2-EUI-64-generated-IPv6>

Now exit configuration mode and save the configuration

R1(config-if)#end
R1#write memory

R2(config-if)#end
R2#write memory

 

Packet Tracer File

Clicking this button will begin the download of a ZIP file. Inside the ZIP file, you'll find a Packet Tracer Activity (.pka) file, which will automatically track your progress as you configure the network.

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