Packet Tracer Lab: IPv6 Configuration and Routing

1. Lab Overview

This Packet Tracer lab focuses on setting up an IPv6 network with static routing and SLAAC (Stateless Address Autoconfiguration). The topology includes three routers (R1, R2, and R3), two switches, and two PCs. The serial connections between the routers use IPv6 link-local addresses only, while global unicast IPv6 addresses are assigned to GigabitEthernet interfaces. Your task is to configure IPv6 routing, enable SLAAC for the PCs, and set up static routes to ensure end-to-end connectivity between PC1 and PC2.

---

2. Network Topology

• PC1: Connected to SW1 (Switch 1), which is connected to R1 (Router 1).
• PC2: Connected to SW2 (Switch 2), which is connected to R3 (Router 3).
• R1, R2, R3: Three routers are interconnected via serial links, with R1 and R3 being the primary communication path, and R2 serving as a backup.

Device	Interface	IPv6 Address
R1	G0/0	2001:db8:0:1::1/64
R1	G0/1	2001:db8:0:13::1/64
R2	S0/0/0	Link-local (Serial)
R2	S0/0/1	Link-local (Serial)
R3	G0/1	2001:db8:0:13::2/64
R3	G0/0	2001:db8:0:3::1/64
PC1	-	To be autoconfigured via SLAAC
PC2	-	To be autoconfigured via SLAAC

---

3. Configuration Steps

3.1 Enable IPv6 Routing on Each Router

1. Access each router in the topology.
2. Enable IPv6 routing using the following command:

   ipv6 unicast-routing

   This will allow the routers to route IPv6 packets between interfaces.

3.2 Configure SLAAC for PCs

1. Ensure the PCs are set to use SLAAC (Stateless Address Autoconfiguration) for IPv6. To do this:

   • On each PC, go to the Desktop > IP Configuration.
   • Set the IPv6 configuration to Autoconfigure.

2. Verify the IPv6 addresses assigned by SLAAC:

   • PC1 (Connected to SW1 via R1):
     • SLAAC will assign an IPv6 address in the range of 2001:db8:0:1::/64.
   • PC2 (Connected to SW2 via R3):
     • SLAAC will assign an IPv6 address in the range of 2001:db8:0:3::/64.

   Record the IPv6 address configured on each PC.

3.3 Configure Static Routes

To allow end-to-end communication between PC1 and PC2, static routes will be configured on the routers.

1. Configure Static Routes on R1:

   • Configure a static route on R1 to reach PC2's network via R3 (primary path):

     ipv6 route 2001:db8:0:3::/64 2001:db8:0:13::2

   • Configure a backup static route via R2:

     ipv6 route 2001:db8:0:3::/64 S0/0/0 2001:db8:0:13::2 150

     Here, 150 is the administrative distance to make this route a backup.

2. Configure Static Routes on R3:

   • Configure a static route on R3 to reach PC1's network via R1 (primary path):

     ipv6 route 2001:db8:0:1::/64 2001:db8:0:13::1

   • Configure a backup static route via R2:

     ipv6 route 2001:db8:0:1::/64 S0/0/1 2001:db8:0:13::1 150

3. Configure Static Routes on R2 (Backup Router):

   • R2 needs to route packets between R1 and R3, so configure the following routes:
     • To PC1’s network:

       ipv6 route 2001:db8:0:1::/64 S0/0/0

     • To PC2’s network:

       ipv6 route 2001:db8:0:3::/64 S0/0/1

3.4 Test Connectivity

1. From PC1, ping PC2 using the command:

   ping 2001:db8:0:3::[PC2's SLAAC address]

2. From PC2, ping PC1 using the command:

   ping 2001:db8:0:1::[PC1's SLAAC address]

---

4. Verification and Troubleshooting

• Ensure that IPv6 routing is enabled on all routers.
• Verify that each PC has been assigned an IPv6 address using SLAAC.
• Check the routing table of each router to confirm that the static routes have been added correctly:

  show ipv6 route

• If the ping tests fail, check for any configuration errors, especially with the static routes and IPv6 addressing.

---

5. Conclusion

This lab covers configuring IPv6 routing using SLAAC for host autoconfiguration and static routes to ensure connectivity. By configuring a backup path through R2, redundancy is achieved in case the primary link fails.

Acknowledgements

Special thanks to Jeremy's IT Lab for providing valuable resources and tutorials that greatly contributed to the completion of this exercise. His in-depth explanations and practical demonstrations have been instrumental in enhancing my understanding of Cisco networking concepts and the effective use of Packet Tracer.

For more information and additional resources, visit Jeremy's IT Lab and check out his YouTube for the full course, Jeremy's IT Lab Free CCNA 200-301 | Complete Course