Welcome, everyone. Here I have come up with an all new style of learning and we have ended up with so many topics in CCNA. Now it’s time to work on some real practical scenarios which will take you to a whole new learning experience. It is always better to get some practice with real Cisco devices; if the devices are not within your grasp, then Cisco Packet Tracer will be a perfect platform for you to get some experience of working with Cisco devices. Packet Tracer is a Cisco propriety learning software that helps students practice for Cisco exams. This software can be easily found either on the Cisco networking website or from other websites for free. I can’t give you the links, but if you want it, you will certainly get the newest version of Cisco Packet Tracer to practice for free. So let’s start with a scenario to perform dual stacking. For fundamentals of IPv6 and IPv4 addressing, you can go to my previous articles about it; otherwise, I am assuming you have a basic working knowledge of IPv4 and IPv6 addressing.

Below I have created a scenario for you to perform dual stacking, which means you have to configure both IPv4 and IPv6 routing between routers in New York and Washington. We will see how each technology is deployed between both routers.

I have configured all the IP addressing for you. You just have to configure RIPv2 and RIPng between the routers.

Goal: IPV4 & IPV6 routing protocols (RIPv2 and RIPng) on routers in New York and Washington to service full reachability for both protocols

Note: all IP configuration is done.

Tasks:

1. First you have to configure RIP and RIPng and advertise all respective N/Ws.

2. IPV4 Host 10.1.1.2 must ping 10.1.2.2

3. IPV6 Host 2001:1:1::2 must ping 2001:1:2::2

If you have done it successfully, then you can try it with EIGRP for IPv4 and IPv6; that means that, instead of using RIP and RIPng, you have to use EIGRP for both IPv4 & IPv6. See below:

Newyork(config)#router eigrp 10 
Newyork(config-router)#no auto-summary
Newyork(config-router)#net 12.1.1.0 0.0.0.255
Newyork(config-router)#net 10.1.1.0 0.0.0.255
Newyork(config-router)#exit
Newyork(config)#ipv6 unicast-routing
Newyork(config)#ipv6 routereigrp 10
Newyork(config-rtr)#router-id 1.1.1.1
Newyork(config-rtr)#no shutdown
Newyork(config-rtr)#exit
Newyork(config)#int f0/1
Newyork(config-if)#ipv6 eigrp 10
Newyork(config)#int s1/0
Newyork(config-if)#ipv6 eigrp 10

You have to run the same configuration for the router in Washington, but remember you have to advertise N/Ws connected to Washington.

As you see above, I have run two EIGRP processes, one for IPv4 and another for IPv6, using the “ipv6 Newyorkeigrp 10″ command by default; IPv6 EIGRP is shutdown so we need to use no shutdown to up EIGRP (as mentioned above).

For OSPFv2 and OSPFv3, the configuration would be:

Newyork(config)#router ospf 1
Newyork(config-router)#network 12.1.1.0 0.0.0.255 area 0
Newyork(config-router)#network10.1.1.0 0.0.0.255 area 0
Newyork(config-router)#exit
Newyork(config)#ipv6 unicast-routing
Newyork(config)#ipv6 routerospf 6
Newyork(config-rtr)#router-id 1.1.1.1
Newyork(config-rtr)#exit
Newyork(config)#int f0/1
Newyork(config-if)#ipv6 ospf 6 area 0
Newyork(config)#int s1/0
Newyork(config-if)#ipv6 ospf area 0

Using the above configuration, we can apply the same dual stacking with OSPFv2 (for IPv2) and OSPFv3 (for IPv6).

Note: It is not necessary to deploy the same routing protocols to perform dual stack. You can use any combination, such as EIGRP–OSPFv3 or OSPFv2-RIPng, or anything that makes sense.

A packet tracer file named “IPv6 Dual Stack” is attached via the link below, on which you can perform all the described tasks. So what you are waiting for? Just click on the link below to download the Packet Tracer file. Another solution file named “IPv6 Dual Stack Soln” is also attached, but I encourage you to not to open it until you finish your task first. After finishing your task, you can compare with my solutions.

If you have any questions regarding this, don’t hesitate to ask me. I am always here to help you. I hope this new learning methodology can increase your understanding about the technologies. I hope you enjoyed it; if so, then please give your valuable feedback. Your feedback will encourage me to provide more unmatched quality solutions. See you soon with another real-time scenario. Until then, enjoy your time with Cisco Packet Tracer.