🏫 UniNet — University Network Architecture

An enterprise-grade dual-campus network architecture designed and simulated natively within Cisco Packet Tracer. The infrastructure maps out a complete high-availability environment for COMSATS University, seamlessly interconnecting a Main Campus and a remote Branch Campus using logical segmentation, dynamic routing fabrics, automated IP allocation schemes, and hardened edge security controls.

📋 Table of Contents

• ✨ Core Infrastructure Subsystems
• 🧱 Logical Topology & VLAN Allocations
• 🔄 Network Data Flow Blueprint
• 🛠️ Device Configuration Highlights
• 📁 Project Repository Mapping
• 🔧 How to Run the Simulation
• 🙋 Authors

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✨ Core Infrastructure Subsystems

• 🌐 Multi-Campus Structural Routing: Merges two distinct geographic campus layouts via dynamic inter-domain path mapping policies.
• 🛡️ Hardened Broadcast Domains (VLANs): Segregates administrative, departmental, and student endpoint matrixes to minimize blast radiuses and optimize traffic performance.
• ⚡ Router-on-a-Stick Inter-VLAN Transit: Deploys virtual sub-interface subnets utilizing standard 802.1Q trunking caps to route isolated department assets securely.
• 🎛️ Automated Infrastructure Pools: Configures core router-mapped DHCP pools to deliver dynamic stateful network assignments across admin floors.
• 🔐 Layer-2 MAC Filtering & Port Security: Hardens edge switches against physical sniffing loops and address exhaustion vectors using maximum MAC capacity ceilings and automated frame restriction traps.
• 📟 Secure Shell (SSHv2) Node Management: Restricts remote administration lanes to encrypted cryptographically signed crypto-key access channels.

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🧱 Logical Topology & VLAN Allocations

The infrastructure splits network nodes into a standard Class C layout (192.168.0.0/24) partitioned cleanly across logical campus segments:

Location	VLAN ID	Department Assignment	IP Subnet Mapping	Allocation Method
Main Campus (Bldg A)	10	Administrative Staff	192.168.10.0/24	Dynamic (DHCP Pool)
Main Campus (Bldg A)	20	Faculty of Business	192.168.20.0/24	Static / Manual
Main Campus (Bldg B)	30	Faculty of Computer Science	192.168.30.0/24	Static / Manual
Main Campus (Bldg B)	40	Civil Engineering Faculty	192.168.40.0/24	Static / Manual
Main Campus (Bldg C)	50	Computer Science Student Labs	192.168.50.0/24	Static / Manual
Main Campus (Bldg C)	60	IT Department & Servers	192.168.60.0/24	Static Infrastructure
Branch Campus (Flr 1)	70	Computer Science Staff Node	192.168.70.0/24	Static / Manual
Branch Campus (Flr 2)	80	Computer Science Students Node	192.168.80.0/24	Static / Manual

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🔄 Network Data Flow Blueprint

  [ Campus Node (VLAN 10) ]                [ External Cloud Core ]
            │                                         ▲
            ▼                                         │ (Static Default Route)
  [ Access Port (fa0/1) ]                             │
            │                                         │
            ▼                                         ▼
  [ 802.1Q Dot1Q Trunk ] ────────────► [ Core Router Node ]
  Encapsulated Virtual Frames                 │        ▲
                                              │        │ (Internal Dynamic Routing)
                                              ▼        ▼
                                       [ RIPv2 Routing Protocol ]
                                      Exchanges Multi-Subnet Metrics

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🛠️ Device Configuration Highlights

1. VLAN Aggregation & Access Mapping (Edge Switch)

Switch# configure terminal
Switch(config)# vlan 10
Switch(config-vlan)# name Admin-Staff
Switch(config-vlan)# interface range fa0/1 - 10
Switch(config-if-range)# switchport mode access
Switch(config-if-range)# switchport access vlan 10

2. Router-on-a-Stick Sub-Interfaces (Gateway)

Router(config)# interface gigabitEthernet 0/0.10
Router(config-subif)# encapsulation dot1Q 10
Router(config-subif)# ip address 192.168.10.1 255.255.255.0

3. Dynamic IP Pools Configuration (DHCP Engine)

Router(config)# ip dhcp pool Admin-Staff
Router(dhcp-config)# network 192.168.10.0 255.255.255.0
Router(dhcp-config)# default-router 192.168.10.1
Router(dhcp-config)# dns-server 8.8.8.8

4. Dynamic Matrix Vector Routing (RIPv2 Engine)

Router(config)# router rip
Router(config-router)# version 2
Router(config-router)# network 192.168.10.0
Router(config-router)# network 192.168.20.0

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📁 Project Repository Mapping

├── final project cn.pkt      # Master Cisco Packet Tracer Network Topology Simulation file
├── .gitignore                # Excludes temporary localized packet tracer lock arrays
└── README.md                 # Complete infrastructure design presentation and breakdown

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🔧 How to Run the Simulation

• Software Prerequisites: Ensure you have Cisco Packet Tracer installed (v8.0 or later recommended).
• Launch Architecture: Open final project cn.pkt directly to launch the simulation topology canvas.
• Execution Convergence: Wait roughly 30-45 seconds for Spanning Tree Protocol (STP) and routing loops to fully converge (all node indicators turn from amber to solid green).
• Validation Test: * Open an Administrative PC in Building A, access the Desktop tab, and confirm that an IP address has been successfully leased via DHCP.
• Run a network ping trace in the workstation CLI prompt (ping 192.168.60.10) to verify stable inter-VLAN data transmissions.

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🙋 Authors

Rayan Ahmer

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