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  ITU-T A.5 justification information for referenced document MEF 10 in draft Y.1731
1. Clear description of the referenced document:
Name: MEF 10
Title: The attributes of Ethernet Services observable at a User Network Interface (UNI) and from User Network Interface to User Network Interface (UNI to UNI) are defined in MEF10. In addition, a framework for defining specific instances of Ethernet Services is described. MEF10 supersedes and replaces MEF 1 and MEF 5.
2. Status of approval:
Approved
3. Justification for the specific reference:
Y.1731 specifies performance management Ethernet OAM functions. These functions are based on definitions in MEF10.
4. Current information, if any, about IPR issues:
No known issues.
5. Other useful information describing the "Quality" of the document:
MEF approved technical specification since 2004. Commonly referenced all over the world for metro Ethernet services (including its predecessors MEF1 and MEF 5).
6. The degree of stability or maturity of the document:
MEF approved technical specification since 2004. Commonly referenced all over the world for metro Ethernet services (including its predecessors MEF1 and MEF 5).
7. Relationship with other existing or emerging documents:
G.8011 defines a Ethernet services framework base on MEF1, the predecessor of MEF10.
8. Any explicit references within that referenced document should also be listed:
[1] Bradner, S., Key words for use in RFCs to Indicate Requirement Levels, RFC 2119,/
March 1997. (Normative)/
[2] IEEE Std 802.3 - 2002, Information technology - Telecommunications and information/
exchange between systems - Local and metropolitan area networks - Specific requirements/
- Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access/
method and physical layer specifications, 8 March 2002. (Normative)/
[3] IEEE Std 802.3ae - 2002, IEEE Standard for Information technology - Telecommunications/
and information exchange between systems - Local and metropolitan area networks/
- Specific requirements - Part 3: Carrier Sense Multiple Access with Collision Detection/
(CSMA/CD) Access Method and Physical Layer Specifications Amendment: Media Access/
Control (MAC) Parameters, Physical Layers, and Management Parameters for 10/
Gb/s Operation, 13 June 2002. (Normative)/
[4] International Telecommunication Union, Recommendation I.370, Integrated Services/
Digital Network (ISDN), Overall Network Aspects And Functions, ISDN User-Network/
Interfaces, Congestion Management For The ISDN Frame Relaying Bearer Service,/
1991./
[5] Metro Ethernet Forum, MEF 1, Ethernet Services Model, Phase 1, 10 November 2003./
[6] Metro Ethernet Forum, MEF 5, Traffic Management Specification: Phase 1, May 2004./
[7] Metro Ethernet Forum, MEF 6, Ethernet Services Definitions - Phase 1, June 2004./
[8] C. Demichelis and P. Chimento, IP Packet Delay Variation Metric for IP Performance/
Metric (IPPM), RFC 3393, November 2002.
9. Qualification of MEF:
The MEF was recognized under the provisions of ITU-T Recommendation A.5 on 24 September 2002. Qualifying information is on file with TSB.
9.5     The IPR policy of the MEF may be found in Article 10 of the MEF Bylaws which are available on the MEF public WEB site metroethernetforum.org.
9.6     All MEF Technical Specifications, Implementation Agreements, and Test Specifications are approved by an electronic letter ballot of all MEF members. For a MEF document to pass an electronic letter ballot at least a quorum of members (defined by the MEF bylaws as 1/3 of the MEF membership) must vote Yes or No. In addition, of the Yes plus No votes at least 75% of the votes must be Yes.
9.7     All published MEF documents are available for download free of charge in PDF or WORD format from the MEF public WEB site www.metroethernetforum.org .
9.8     Each revision of a given MEF document has a different MEF number.
10. Other (for any supplementary information):
None
Note: This form is based on Recommendation ITU-T A.5