Routing &switching

Network Engineering Lab – Complete Enterprise Topology**

Over the past few days, I’ve worked on building a full-scale enterprise network simulation using **Cisco Packet Tracer**. This project aims to simulate a real-world business environment with high availability, security, and scalability in mind.

Here’s a breakdown of what I’ve implemented:

**VLAN Segmentation**:

Created multiple VLANs (2, 3, 4, 5,default) to logically separate departments and improve security and performance.

**Spanning Tree Protocol (PVST+/Rapid-PVST)**:

Configured STP to prevent loops and establish a reliable Layer 2 topology, including primary and secondary root bridges.

**DHCP**:

Configured dynamic IP allocation per VLAN to ensure centralized and automated network addressing.

**HSRP (Hot Standby Router Protocol)**:

Set up gateway redundancy between routers to enhance fault tolerance for end devices.

**OSPF**

**VPN **:

Established multiple GRE tunnels to securely connect remote sites and enable secure routing across untrusted networks.

**ACL (Access Control Lists)**:

Implemented filtering rules to control traffic from specific VLANs and enforce security policies.

This project helped me reinforce my knowledge in Layer 2 & Layer 3 technologies, redundancy protocols, routing, and network security.

Tools Used: Cisco Packet Tracer

Technologies: VLAN, STP, NTP, DNS, HTTP, RIPV2, DHCP, HSRP, OSPF, VPN, ACLs, NTP