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Liaison statement
Update on MEF 63 and Operator L1 Service Attributes

Additional information about IETF liaison relationships is available on the IETF webpage and the Internet Architecture Board liaison webpage.
State Posted
Submitted Date 2018-11-05
From Group MEF
From Contact David Ball
To Group ccamp
To Contacts Daniele Ceccarelli <>
Fatai Zhang <>
Cc Deborah Brungard <>
Fatai Zhang <>
Martin Vigoureux <>
Alvaro Retana <>
Daniele Ceccarelli <>
Common Control and Measurement Plane Discussion List <>
Raghu Ranganathan <>
Response Contact
Purpose For information
Attachments (None)
Liaisons referring to this one Reply to LS on Update on MEF 63 and Operator L1 Service Attributes
Further to our previous liaisons, we would like to inform you that the
Subscriber Layer 1 Service Attributes Technical Specification has been
published as MEF 63. All published MEF specifications are available at:

MEF 63 defines the service attributes for a UNI-to-UNI Layer 1 service for the
following client protocols: Ethernet, Fibre Channel, SONET and SDH.

Work is also underway on a partner specification defining Operator Layer 1
Service Attributes, for both UNI-to-ENNI (access) and ENNIto- ENNI (transit)
Layer 1 services provided by one Operator to another or to a Service Provider.
A draft for review is planned for 2Q 2019 and we will provide it for comment
when available.

The forthcoming MEF meetings are:
January 28-31, 2019 - Hong Kong
April 29 - May 2, 2019 - Dubrovnik, Croatia
July 29 - August 1, 2019 - TBD