EoPoS

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Ethernet over PDH over SONET/SDH (EoPoS) is one of many techniques that provided Ethernet connectivity over non-Ethernet networks. EoPoS is a standardized methodology for transporting native Ethernet frames over the existing telecommunications optical infrastructure by leveraging both the established PDH and SONET/SDHtransport technologies.


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[edit] General Description

EoPoS is a standardized methodology for transporting native Ethernet frames over a SONET/SDH network, by first mapping into one or more PDH tributaries such as T1, E1, or DS3. The tributaries can then be dropped from a legacy ADM, delivered to the customer premise, and the PDH links resolved back to an Ethernet connection by a piece of equipment supporting EoPDH.

The technologies used in EoPoS include GFP frame encapsulation, Ethernet Mapping, Virtual Concatenation, Link Capacity Adjustment Scheme, and Management Messaging (OAM). Common practices in EoPoS equipment also include the tagging of traffic for separation into virtual networks, prioritization of user traffic..

[edit] History

[edit] Related Standards

Standards from the ITU-T:

  • ITU-T G.7041 Generic Framing Procedure
  • ITU-T G.7042 Link Capacity Adjustment Scheme
  • ITU-T G.7043 Virtual concatenation of plesiochronous digital hierarchy (PDH) signals
  • ITU-T G.8040 GFP frame mapping into Plesiochronous Digital Hierarchy (PDH)
  • ITU-T Y.1730 Requirements for OAM functions
  • ITU-T Y.1731 OAM functions and mechanisms

[edit] The Use of EoPoS

[edit] See also

[edit] External links