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AToM , EoMPLS Concepts,Configuration and Verification ( will update )
Updated on Sep, 2026
IT and Software , Network and Security,
Duration - 3.5 hours
Training 5 or more people ?
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Any Transport over MPLS (AToM) accommodates different types of Layer 2 packets, including Ethernet and VLAN, to enable the service provider to transport different types of traffic over the backbone and accommodate all types of customers.
AToM adheres to the standards developed for transporting Layer 2 packets over MPLS. Other Layer 2 solutions are proprietary, which can limit the service provider’s ability to expand the network and can force the service provider to use only one vendor’s equipment.
Upgrading to AToM is transparent to the customer. Because the service provider network is separate from the customer network, the service provider can upgrade to AToM without disruption of service to the customer.
The successful transmission of the Layer 2 frames between PE devices is due to the configuration of the PE devices. You can set up the connection, called a pseudo wire, between the routers and specify the following information on each PE device:
AToM encapsulates Layer 2 frames at the ingress provider edge (PE) and sends them to a corresponding PE at the other end of a pseudo wire. The egress PE removes the encapsulation and sends out the Layer 2 frame.
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Arash Deljoo is a seasoned Cisco engineer with 15 years of expertise in network engineering, communications, and education, particularly in E-learning. He holds a Master's degree in power electrical engineering and has developed numerous training courses in both English and Persian. Over his career, Arash has taught more than 20,000 students through online and in-person courses, sharing his deep knowledge with a global audience.
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