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Liaison statement
Framework and Requirements for Layer 1 Virtual Private Networks

State Posted
Submitted Date 2006-01-16
From Group l1vpn
From Contact Adrian Farrel
To Group ITU-T-SG-13
To Contacts Georges Sebek <>
Cc Marco Carugi <>
Scott Bradner <>
Alex Zinin <>
Bill Fenner <>
Tomonori Takeda <>
Hamid Ould-Brahim <>
L1VPN Mailing List <>
Response Contact Adrian Farrel <>
Technical Contact Tomonori Takeda <>
Purpose For information
Attachments (None)
As you are aware, the IETF's Layer One VPN (L1VPN) working group has been
developing documentation to set out a framework and the requirements for
L1VPNs. This work draws on Y.1312 and Y.1313, and has had significant input
from authors and reviewers who are participants in SG13.

The L1VPN working group now believes that it has completed the framework and
requirements, and proposes to take the document to working group last call soon.

The relevant document can be found at and, as
always, we would appreciate any comments on the working group mailing list.
Details of how to subscribe to the mailing list can be found at

Tomonori Takeda
Hamid Ould-Brahim
Adrian Farrel