Multi-Site Cisco Topology

Enterprise network design for a Philippine-based logistics firm using Cisco Packet Tracer.

Overview

A comprehensive network infrastructure design implementing a Three-Layer Hierarchical Model across four geographic sites: Manila, Cebu, Bohol, and Makati. The design focuses on redundancy, security, and scalability.

Role

Owner - Designed and configured the entire network topology

Technologies

• Cisco Packet Tracer (simulation)
• OSPF routing protocol
• HSRP (gateway redundancy)
• IPsec VPN (site-to-site tunnels)
• VLSM (Variable Length Subnet Masking)
• VLANs and EtherChannel
• NAT/PAT and ACLs

Repository

GitHub: multi-site-cisco-topology

Screenshot

Architecture Highlights

• Four Sites: Manila (HQ), Cebu (Regional Hub), Makati (Sales/InfoSec), Bohol (Operations)
• Three-Layer Model: Core, Distribution, Access layers
• Redundancy: HSRP at distribution layer in Manila
• Security: IPsec VPN tunnels between sites, ACLs, port security
• Dynamic Routing: OSPF Area 0 for automated route propagation

Key Features

• Gateway redundancy with HSRP
• Secure site-to-site VPN tunnels
• Efficient IP addressing with VLSM
• NAT/PAT for internet access
• Comprehensive security with ACLs

Network Services

• DHCP, DNS, HTTP (Web Servers), SMTP
• Inter-VLAN routing
• EtherChannel (LACP/PAgP)
• STP (Spanning Tree Protocol)

Documentation

• Site Network Configuration Guide
• VLSM Subnet Planning
• IP Address Table