Ethernet Networking Package
Introduction
The Ethernet Networking Package (ENP) handles the FOXMAN-UN MPLS-TP network functionality.
Multiprotocol Label Switching - Transport Profile (MPLS-TP) enables MPLS to be deployed in transport network and operated in a similar manner to existing transport technologies, e.g. SDH. The objective is to achieve the transport characteristics of SDH that are connection oriented, a high level of availability, quality of service, OAM capabilities1.
MPLS-TP network provisioning can be achieved via a centralized Network Management System (NMS) for static provisioning and/or a distributed control plane for dynamic provisioning. FOXMAN-UN current version supports static provisioning.
The main characteristics of MPLS-TP are:
• Connection oriented: MPLS-TP uses Label Switched Paths (LSPs) and Pseudo Wires (PW) to deliver services.
• MPLS-TP can carry any type of client traffic such as ATM, SDH, Ethernet, etc.
• Provides network-wide Hierarchical QoS (HQoS).
• Transport layer agnostic: MPLS-TP can run over Ethernet, SDH, OTN, Generic Framing Procedure (GFP) and Wavelength Division Multiplexing (WDM).
• Provides OAM capabilities similar to those provided by SDH and OTN.
• Provides end-to-end protection and restoration mechanisms including:
− supports 1+1 protection and 1:n protection;
− LSP and PW protection:
FOXMAN-UN supports 1:1 bidirectional LSP protection;
− guaranteed 50 ms recovery time;
− MPLS-TP restoration mechanisms support revertive and non-revertive behavior.
1 Networks and Services: Carrier Ethernet, PBT, MPLS-TP and VPLS, M. Toy