MPLS L2VPN - Any Transport over MPLS (AToM) by Arash Deljoo

Name: MPLS L2VPN - Any Transport over MPLS (AToM) by Arash Deljoo
Rating: 4.6 (202 reviews)

Mastering Layer 2 VPNs and AToM Technologies for Seamless Network Integration

Created byArash Deljoo

Last updated 6/2026

English

English [Auto],

What you'll learn

Understand the fundamentals of Any Transport over MPLS (AToM) and how pseudowires emulate Layer 2 services over MPLS.
Configure and verify AToM data-plane operations, including label learning and packet forwarding.
Implement basic and advanced AToM configurations, including pseudowire classes and redundancy.
Understand pseudowire signaling using targeted LDP, PW labels, and status signaling mechanisms.
Transport Ethernet, VLANs, and trunk links over MPLS using EoMPLS and verify their behavior.
Configure path selection for AToM using IP routing, unequal-cost multipath (UCMP), equal-cost multipath (ECMP), and MPLS TE tunnels.
Deploy multi-segment pseudowires (MS-PW) in both Intra-AS and Inter-AS environments.
Understand and configure AToM L2VPN interworking, including both bridged and routed interworking scenarios.
Learn the fundamentals of Virtual Private LAN Service (VPLS) and how it provides multipoint L2 connectivity.

Course content

8 sections • 21 lectures • 5h 10m total length

Introduction to Any Transport over MPLS (AToM)5:21
1-Introduction to Any Transport over MPLS (AToM)
2-Why Service Providers Need AToM
3-AToM Architecture: CE, PE, P Routers, and Attachment Circuits
4-Pseudowires and Emulated Layer 2 Tunnels
5-Transporting Multiple Layer 2 Services over an MPLS Backbone
Introduction to Any Transport over MPLS (AToM) Quiz
Layer 2 Transport and Pseudowire Basics7:05
1- Pseudowire Emulation Edge-to-Edge Reference Model introduction
2- Attachment Circuits (ACs) Introduction
AToM Architecture and Label Basics6:43
1- AToM Architecture introduction
2- AToM LDP/RSVP Label Introduction
3- AToM VC/PW Label Introduction
4- Pseudowire Emulation Edge-to-Edge Reference Model for an MPLS Network Introduction

AToM Data Plane Operations and Packet Forwarding7:15
1- Data Plane of AToM introduction
2- Tunnel Label Learning from LDP/RSVP Introduction
3- VC/PW Label Learning from Targeted LDP Introduction
4- Forwarding of AToM Packet Introduction
AToM Basic Configuration and Verification15:43
1- AToM Basic Configuration introduction
2- AToM Basic Configuration Scenario
3- AToM Basic Configuration Verification
4- AToM Pseudowire Class Introduction and Configuration
Understanding Pseudowire Signaling in MPLS26:15
1- Signaling by Targeted LDP Session introduction
2- Advertised Labels for AToM Scenario introduction
3- Label Mapping message introduction
4- PW ID FEC TLV introduction
5- Signaling the Status of the Pseudowire introduction

EoMPLS Carrying Simple Ethernet12:47
1- Ethernet over MPLS (EoMPLS) introduction
2- EoMPLS Carrying Simple Ethernet Introduction
3- EoMPLS Carrying Simple Ethernet Configuration
4- EoMPLS Carrying Simple Ethernet Verification
EoMPLS Carrying Ethernet Trunk11:07
1- EoMPLS Carrying Ethernet Trunk introduction
2- EoMPLS Carrying Ethernet Trunk Configuration
3- EoMPLS Carrying Ethernet Trunk Verification
EoMPLS Carrying one VLAN8:47
1- EoMPLS Carrying one VLAN introduction
2- EoMPLS Carrying one VLAN Configuration
3- EoMPLS Carrying one VLAN Verification

AToM Unequal-Cost Multipath Case Study11:08
AToM Equal-Cost Multipath Case Study10:10
1- AToM Case Study - Equal-Cost Multipath introduction
2- AToM Case Study - Equal-Cost Multipath configuration
3- AToM Case Study - Equal-Cost Multipath verification
AToM Preferred Path with IP Routing Case Study33:44
1- AToM Case Study - Preferred Path Using IP Routing introduction
2- AToM Case Study - Preferred Path Using IP Routing configuration
3- AToM Case Study - Preferred Path Using IP Routing verification
AToM Preferred Path with MPLS TE Tunnels Case Study25:20
1- AToM Case Study - Preferred Path Using MPLS Traffic Engineering Tunnels introduction
2- AToM Case Study - Preferred Path Using MPLS Traffic Engineering Tunnels configuration
3- AToM Case Study - Preferred Path Using MPLS Traffic Engineering Tunnels verification

AToM Multi-Segment Pseudowire Intra-AS33:28
1- AToM Multi-Segment Pseuodowire - Intra-AS introduction
2- AToM Multi-Segment Pseuodowire - Intra-AS configuration
3- AToM Multi-Segment Pseuodowire - Intra-AS verification
AToM Multi-Segment Pseudowire Inter-AS20:21
1- AToM Multi-Segment Pseudowire - Inter-AS introduction
2- AToM Multi-Segment Pseudowire - Inter-AS configuration
3- AToM Multi-Segment Pseudowire - Inter-AS verification

AToM L2VPN Bridged and Routed Interworking Introduction17:20
1- AToM L2VPN Interworking introduction
2- AToM L2VPN Bridged Interworking introduction
3- AToM L2VPN Routed Interworking introduction
AToM L2VPN Bridged and Routed Interworking Setup12:22
1- AToM L2VPN Interworking Review
2- AToM L2VPN Bridged Interworking Configuration
3- AToM L2VPN Bridged Interworking Verification
4- AToM L2VPN Routed Interworking Configuration
5- AToM L2VPN Routed Interworking Verification

VPLS Fundamentals and Logical Bridge Basics2:56
1- The Need for VPLS introduction
2- VPLS: Logical Bridge introduction
VPLS Architecture and Frame Forwarding Basics9:10
1- VPLS Architecture introduction
2- Forwarding of Ethernet frames brief introduction
3- Forwarding of unicast frames with an unknown destination MAC address brief introduction
4- Replication of broadcast and multicast frames to more than one port brief introduction
5- Loop prevention brief introduction
6- Dynamic learning of MAC addresses brief introduction
7- MAC address aging brief introduction

Requirements

Basic understanding of IP networking, including routing and switching fundamentals.
Familiarity with Cisco IOS command-line configuration is recommended.
Some experience with MPLS fundamentals (labels, LDP, VRF basics) will be helpful but not mandatory.
Access to a lab environment such as GNS3, EVE-NG, Cisco CML, or physical routers to practice AToM
A willingness to learn advanced service provider technologies step-by-step.
No prior AToM knowledge is required—this course explains everything from the ground up.

Description

In today's interconnected world, delivering reliable and versatile network services is crucial for businesses of all sizes. This course on MPLS L2VPN—Any Transport over MPLS (AToM)—opens the door to mastering one of the most powerful technologies in modern networking. AToM empowers service providers and enterprises to transport any Layer 2 protocol over an MPLS backbone, creating seamless connections across geographically dispersed locations. Whether it’s Ethernet, Frame Relay, ATM, or PPP, AToM ensures that diverse customer needs are met with flexibility, efficiency, and scalability.

Imagine being able to design networks that support legacy systems while embracing cutting-edge solutions—all within a unified framework. With AToM, you’ll unlock the ability to deliver high-performance Layer 2 services without compromising on quality or compatibility. This course equips you with the skills to transform complex networking challenges into opportunities for innovation. From enabling cloud connectivity to supporting mission-critical applications, AToM is at the heart of next-generation network architectures.

If you’re ready to take your networking career to the next level, this course will provide the tools and insights needed to stand out in the industry. You’ll gain hands-on knowledge of how leading organizations leverage AToM to build resilient, scalable, and cost-effective networks. By the end of this journey, you’ll not only understand the "how" but also the "why" behind AToM’s growing importance in global telecommunications. Join us and become a pioneer in shaping the future of network infrastructure!

Who this course is for:

Network engineers who want to master AToM, pseudowires, and Layer 2 transport technologies over MPLS.
Students preparing for advanced Cisco certifications such as CCNP Service Provider, CCNP Enterprise, or CCIE SP.
Engineers working in service provider or enterprise networks that rely on MPLS-based L2VPN services.
Professionals seeking a deeper understanding of pseudowire signaling, multi-segment pseudowires, and MPLS TE path engineering.
IT specialists who want practical, hands-on skills with AToM and Ethernet over MPLS to advance their careers.
Learners who already know basic MPLS concepts and want to expand into advanced Layer 2 MPLS services.
Motivated beginners with fundamental routing/switching knowledge who want to grow into service provider networking roles.

MPLS L2VPN - Any Transport over MPLS (AToM) by Arash Deljoo

What you'll learn

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Course content

Introduction to AToM and Layer 2 Transport3 lectures • 19min

AToM Forwarding and Core Operations3 lectures • 49min

Ethernet over MPLS (EoMPLS) Scenarios3 lectures • 33min

AToM Path Selection and Redundancy2 lectures • 33min

AToM Case Studies and Path Engineering4 lectures • 1hr 20min

AToM Multi-Segment Pseudowires2 lectures • 54min

AToM L2VPN Interworking2 lectures • 30min

VPLS Foundations2 lectures • 12min

Requirements

Description

Who this course is for: