🌐 Dual Stack Enterprise Network Project (IPv4 + IPv6)

This project simulates an enterprise-level dual-stack network using Cisco Packet Tracer, with full VLAN segmentation, router-on-a-stick inter-VLAN routing, DHCPv4 & DHCPv6, and a mix of IPv4 static routing and IPv6 dynamic routing using OSPFv3.

🚀 Designed and implemented as part of my CCNA hands-on practice and portfolio development.

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📌 Project Objectives

• Implement VLANs to segment departments (HR, IT, Finance, Admin)
• Configure 802.1Q trunk ports between routers and switches
• Use subinterfaces on routers to perform inter-VLAN routing
• Enable static routing for IPv4 and OSPF for IPv6
• Setup DHCPv4 and DHCPv6 servers on routers
• Ensure full IPv4 and IPv6 communication between devices in different VLANs

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📐 Topology Summary

• 2 Routers: R1 and R2 (dual-stack configured)
• 4 Switches: SW1 to SW4
• 4 VLANs: VLAN 10 (HR), VLAN 20 (IT), VLAN 30 (Finance), VLAN 40 (Admin)
• Multiple PCs assigned to VLANs across all switches
• Trunk ports used to connect routers and switches

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🧠 Technologies Used

Technology	Configuration
VLANs	VLAN 10, 20, 30, 40 on SW1–SW4
Trunk Ports	Fa0/24, Gi0/1, Fa0/23 (where needed)
Subinterfaces	Router-on-a-stick using G0/0/1.x
Static Routing	For IPv4
OSPFv3	For IPv6 dynamic routing
DHCPv4	Pool per VLAN with exclusions
DHCPv6	Prefix-based pools with DNS config
IPv6 Routing	ipv6 unicast-routing + OSPF area 0

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🧾 IP Addressing Scheme

🔹 Router 1 (R1) Subinterfaces

VLAN	Interface	IPv4 Address	IPv6 Address	Purpose
10	G0/0/1.10	192.168.1.1/27	2001:10::1/64	HR
20	G0/0/1.20	192.168.2.1/27	2001:20::1/64	IT
30	G0/0/1.30	192.168.3.1/27	2001:30::1/64	Finance
40	G0/0/1.40	192.168.4.1/27	2001:40::1/64	Admin

🔹 Router 2 (R2) Subinterfaces

VLAN	Interface	IPv4 Address	IPv6 Address	Purpose
10	G0/0/1.10	192.168.1.65/27	2001:10::2/64	HR
20	G0/0/1.20	192.168.2.65/27	2001:20::2/64	IT
30	G0/0/1.30	192.168.3.65/27	2001:30::2/64	Finance
40	G0/0/1.40	192.168.4.65/27	2001:40::2/64	Admin

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🖼️ Network Topology

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📥 DHCP Server Setup

✅ On R1 and R2:

• DHCPv4 Pools: Separate pools for each VLAN with excluded addresses
• DHCPv6 Pools: Prefix delegation using ipv6 dhcp pool with lifetime and DNS

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💼 Skills Demonstrated

• VLAN and trunking on multi-switch architecture
• Router-on-a-stick inter-VLAN routing
• IPv4 Static + IPv6 Dynamic (OSPFv3) Routing
• DHCP configuration for dual stack networks
• Hands-on Packet Tracer design and verification
• Professional documentation (README + Excel)

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🙋‍♂️ Author

Sadiq
📌 Network Engineer | CCNA Certified | Aspiring Cloud & Security Architect

🔗 LinkedIn Profile
📂 GitHub Portfolio
✉️ Email: Iam_sadiq.s@yahoo.com

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