Lambda Labels Lambda Labels draft-otani-ccamp-gmpls-lambda-labels-02 Tomohiro Otani (KDDI R&D Labs) Hongxiang Guo (KDDI R&D Labs) Keiji Miyazaki (Fujitsu Laboratories Ltd) Diego Caviglia (Ericsson) 2014/2/12171st IETF meeting, March 2008

Summary of this draft This draft –proposes to define a standard lambda label format to achieve interoperability in wavelength switched all- optical networks based on existing ITU-T defined architecture including G.694 wavelength specification. Multi-vendor environment Multi-domain environment –states the GMPLS signaling requirements considering wavelength continuity. 2014/2/12271st IETF meeting, March 2008

Updates from 01 version Cleaned up texts so as to indicate the lambda label being compliant with G.694. Changed the label format –CWDM Label is aligned with DWDM label according to Gregs suggestion. 2014/2/12371st IETF meeting, March 2008

Label format (DWDM) |Grid | C.S |S| Reserved | n | Grid is set to 1 for DWDM [G.694.1] Frequency (THz) = THz + n * channel spacing (THz) Channel Spacing set to 12.5, 25, 50, and 100 GHz (In the case of when wider channel spacing such as 0.2 THz, the combination of narrower channel spacing and the value n are utilized). S is the sign (+/-) n allows the computation of the specific frequency 2014/2/12471st IETF meeting, March 2008

Label format (CWDM) |Grid | Reserved | n | Grid is set to 2 for CWDM [G.694.2] Wavelength (nm) = 1470 nm + n * 20 nm n allows the computation of the specific wavelength. 2014/2/12571st IETF meeting, March 2008

Next steps We propose to adopt this as a working group document. 2014/2/12671st IETF meeting, March 2008