mpls-traffic-engineering

TP – MPLS – Dynamic Traffic Distribution & Tunnel

This repository contains a hands-on MPLS lab built in GNS3.
The goal is to create a small “service provider” backbone, enable MPLS, and use Traffic Engineering (TE) to control how traffic is distributed across the network.

Originally done as a TP – MPLS – répartition de trafic et tunnel dynamique in a Networks & Telecommunications curriculum.

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🎯 Objectives

This lab focuses on:

• Building a small MPLS backbone in GNS3
• Running OSPF as the IGP
• Enabling **MPLS ** on the core
• Creating Traffic tunnels
• Observing traffic distribution / load sharing across tunnels
• Testing path changes and behaviour when links or tunnels fail

🧠 Skills Developed

• Working on this lab helps develop:
• A practical understanding of MPLS in a service-provider style backbone
• Configuration of OSPF as an IGP in a multi-router environment
• Activation and verification of MPLS with LDP
• Use of Traffic Engineering tunnels to influence routing and avoid congestion
• Observation of how traffic paths change when links or tunnels fail
• A methodical approach to testing, troubleshooting and documenting a network lab

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🗺 Topology

The lab uses a multi-router MPLS core with edge networks and end-to-end connectivity.

• Core routers interconnected in a partial mesh
• Edge routers acting as customer/edge (CE/PE)
• MPLS enabled in the provider core
• OSPF providing IP reachability between all nodes

## Lab Setup
Prerequisites

GNS3 installed (local or GNS3 VM)

A valid Cisco IOS 2691 image, e.g.:
c2691-adventerprisek9-mz.124-5a.image

Basic knowledge of:
- Cisco CLI
- IP addressing & routing
- OSPF fundamentals
- MPLS & label switching (at least at a conceptual level)

⚠️ IOS images are not provided in this repo.