T-MPLS
From Wikipedia, the free encyclopedia
T-MPLS or Transport MPLS is a network layer technology that uses a subset of the existing MPLS standards and is designed specifically for application in transport networks. It is defined by the ITU-T in February 2006. It is designed specifically as a connection-oriented packet-switched (co-ps) application. It offers a simpler implementation by removing features that are not relevant to co-ps applications and adding mechanisms that provide support of critical transport functionality.
T-MPLS uses the same architectural principles of layered networking that are used in other technologies like SDH and OTN. Service providers have already developed management processes and work procedures based on these principles.
In this way T-MPLS provides a reliable packet-based technology that is familiar and also aligned with circuit-based transport networking, it supports current organizational processes and large-scale work procedures.
T-MPLS is a low cost L2 technology that provides QoS, end-to-end OA&M and protection switching.
The following ITU-T recommendations exist for T-MPLS:
| Recommendation | Title |
|---|---|
| G.8110.1 | Architecture of Transport MPLS (T-MPLS) Layer Network |
| G.8112 | Interfaces for the Transport MPLS (T-MPLS) Hierarchy |
| G.8114 | Operation & Maintenance mechanisms for T-MPLS layer networks |
| G.8121 | Characteristics of Transport MPLS equipment functional blocks |
| G.8131 | Linear protection switching for Transport MPLS (T-MPLS) networks |
| G.8132 | Shared Protection Ring switching for T-MPLS networks |
