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In this project, a virtual enterprise network was designed using Cisco Packet Tracer, incorporating key networking technologies such as:
– VLANs for logical segmentation
– QoS for traffic prioritization
– Spanning Tree Protocol (STP) for loop prevention
– Access Control Lists (ACLs) for security
– OSPF for dynamic routing
Problem Statement
As a company’s network grows, it requires performance optimization, security, and scalability. The goal was to:
– Manage real-time traffic efficiently
– Prevent switching loops
– Enforce access control between departments
– Ensure future scalability
Solution Implemented
- VLAN Configuration – Logically segmented departments for better traffic management.
- QoS Setup – Prioritized critical services like VoIP and video conferencing.
3. STP Implementation – Eliminated potential switching loops.
4. ACL Enforcement – Restricted unauthorized inter-department access.
- OSPF Routing – Enabled dynamic routing for scalability.
You Should Know: Essential Commands & Configurations
1. VLAN Configuration
Create VLANs Switch(config) vlan 10 Switch(config-vlan) name Sales Switch(config-vlan) exit Assign ports to VLANs Switch(config) interface fastEthernet 0/1 Switch(config-if) switchport mode access Switch(config-if) switchport access vlan 10
2. QoS Setup (Prioritizing VoIP Traffic)
Switch(config) class-map match-any VOICE Switch(config-cmap) match dscp ef Switch(config-cmap) exit Switch(config) policy-map QOS_POLICY Switch(config-pmap) class VOICE Switch(config-pmap-c) priority percent 30 Switch(config-pmap-c) exit
- Spanning Tree Protocol (STP) for Loop Prevention
Enable Rapid PVST+ Switch(config) spanning-tree mode rapid-pvst Set root bridge priority Switch(config) spanning-tree vlan 10 root primary
4. Access Control Lists (ACLs) for Security
Block Sales VLAN from accessing Finance VLAN Router(config) access-list 100 deny ip 192.168.10.0 0.0.0.255 192.168.20.0 0.0.0.255 Router(config) access-list 100 permit ip any any Router(config) interface vlan 10 Router(config-if) ip access-group 100 in
5. OSPF Dynamic Routing for Scalability
Router(config) router ospf 1 Router(config-router) network 192.168.10.0 0.0.0.255 area 0 Router(config-router) network 192.168.20.0 0.0.0.255 area 0 Router(config-router) exit
What Undercode Say
This project demonstrates the real-world application of enterprise networking principles using Cisco Packet Tracer. Key takeaways:
– VLANs improve traffic segmentation and reduce broadcast domains.
– QoS ensures critical services get bandwidth priority.
– STP prevents network loops, enhancing stability.
– ACLs enforce security policies between departments.
– OSPF allows dynamic routing, making the network adaptable.
For hands-on learners, replicating this setup in GNS3 or Cisco Packet Tracer will solidify these concepts.
Expected Output:
A fully functional, secure, and scalable enterprise network with:
✔ VLAN segmentation
✔ QoS-prioritized traffic
✔ STP-enabled switches
✔ ACL-protected inter-VLAN communication
✔ OSPF dynamic routing for future expansion
References:
Reported By: Shamseer Siddiqui – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
