http://www.rfc-editor.org/rfc/rfc7139.txt
RFC 7139: GMPLS Signaling Extensions for Control of Evolving G.709 Optical Transport Networks, F. Zhang, G. Zhang, S. Belotti, D. Ceccarelli, K. Pithewan2014-03-01T23:00:00-00:00This document updates the ODU-related portions of RFC 4328 to provide extensions to GMPLS signaling to control the full set of OTN features, including ODU0, ODU4, ODU2e, and ODUflex.