1. Page - 175th IETF - Stockholm, Sweden, July 2009 GMPLS Signaling Extensions for Evolutive OTNs control draft-ceccarellifuxh-ccamp-gmpls-extensions-for-evolutive-otn-00.txt Xihua Fufu.xihua@zte.com.cn ZTE Daniele Ceccarellidaniele.ceccarelli@ericsson.com Ericsson Marco Corsimarco.corsi@altran.it Altran

2. Page - 275th IETF - Stockholm, Sweden, July 2009 Authors/Contributors Xihua Fu (editor) ZTE Daniele Ceccarelli (editor) Ericsson Marco Corsi (editor) Altran Diego Caviglia Ericsson Ming Ke ZTE Francesco Fondelli Ericsson Yuanlin Bao ZTE Lizhong Jin NSN

3. Page - 375th IETF - Stockholm, Sweden, July 2009 History of Document 1. draft-ceccarelli-ccamp-gmpls-g709-am3-00.txt June 27, 2009 2. draft-fuxh-ccamp-gmpls-extension-for-evolutive- otn-01.txt July 6, 2009 3. merging document: draft-ceccarellifuxh-ccamp- gmpls-extensions-for-evolutive-otn-00.txt July 27, 2009

4. Page - 475th IETF - Stockholm, Sweden, July 2009 Requirement of GMPLS Signaling Extension for G.709 Amendment3 and G.sup43 GMPLS signaling extensions for G.709 (2003/03) has been described in RFC4328 including the Generalized Label Request and the Generalized Label (i.e., just for ODU1, ODU2 and ODU3).RFC4328 In terms of the evolutive OTN hierarchy, GMPLS signaling extensions for the new applications (i.e., ODU0, 1.25G ODU1, 1.25G ODU2, ODU2e, 1.25G ODU3, ODU3e1, ODU3e2, ODUflex and ODU4) are needed.

5. Page - 575th IETF - Stockholm, Sweden, July 2009 Content of this document Extend GMPLS signaling: a.Signal Type (ST) b.Number of Multiplexed Components (NMC). c.Generalized Label. To control new signal types: - ODU0 - ODU1 (1.25G TS) - ODU2 (1.25G TS) - ODU2e - ODU3 (1.25G TS) - ODU3e1, ODU3e2 (Non Normative) - ODU flex (1.25G and 2.5G TS) - ODU4 (1.25G TS)

6. Page - 675th IETF - Stockholm, Sweden, July 2009 Extension of Signal Type Value Type ----- ---- 0 Not significant 1 ODU1 (i.e., 2.5 Gbps) /*The size of OPU1 TS is 2.5G or mapping into 2.5G TS of OPU2 or OPU3 */ 2 ODU2 (i.e., 10 Gbps) /*The size of OPU2 TS is 2.5G or mapping into 2.5G TS of OPU3 */ 3 ODU3 (i.e., 40 Gbps) /*The size of OPU3 TS is 2.5G*/ 4 Reserved (for future use) 5 Reserved (for future use) 6 OCh at 2.5 Gbps 7 OCh at 10 Gbps 8 OCh at 40 Gbps 9 OCh at 100 Gbps 10 ODU0 11 ODU1 /* The size of OPU1 TS is 1.25G or mapping into 1.25G TS of OPUk (K > 1) */ 12 ODU2 /* The size of OPU2 TS is 1.25G or mapping into 1.25G TS of OPUk (K > 2) */ 13 ODU3 /* The size of OPU3 TS is 1.25G or mapping into 1.25G TS of OPUk (K > 3) */ 14 ODU4 15 ODU2e /* 10Gbps for FC1200 and GE LAN */ 16 ODU3e1 /* Non-Normative */ 17 ODU3e2 /* Non-Normative */ 18 ODUflex /* Mapping into 1.25G TS of OPU2/OPU3/OPU4 */ 19 ODUflex /* Mapping into 2.5G TS of OPU2/OPU3 */ 20-255 Reserved (for future use) New Signal Type extended for G.709 Amendment3 and G.sup43

7. Page - 775th IETF - Stockholm, Sweden, July 2009 Extension of NMC NMC Description --- ----------- 1 ODU0 is mapped into 1.25G tributary slots of OPU1. 1 ODU0 is mapped into 1.25G tributary slots of OPU2. 1 ODU0 is mapped into 1.25G tributary slots of OPU3. 1 ODU0 is mapped into 1.25G tributary slots of OPU4. 2 ODU1 is mapped into 1.25G tributary slots of OPU2. 2 ODU1 is mapped into 1.25G tributary slots of OPU3. 2 ODU1 is mapped into 1.25G tributary slots of OPU4. 8 ODU2 is mapped into 1.25G tributary slots of OPU3. 8 ODU2 is mapped into 1.25G tributary slots of OPU4. 9 ODU2e is mapped into 1.25G tributary slots of OPU3. 8 ODU2e is mapped into 1.25G tributary slots of OPU3e2. [Non-Normative] 8 ODU2e is mapped into 1.25G tributary slots of OPU4. 32 ODU3 is mapped into 1.25G tributary slots of OPU4. 1-8 ODUflex is mapped into 1.25G tributary slots of OPU2. 1-32 ODUflex is mapped into 1.25G tributary slots of OPU3. 1-80 ODUflex is mapped into 1.25G tributary slots of OPU4. 1 ODU1 is mapped into 2.5G tributary slots of OPU2. 1 ODU1 is mapped into 2.5G tributary slots of OPU3. 4 ODU2 is mapped into 2.5G tributary slots of OPU3. 5 ODU2e is mapped into 2.5G tributary slots of OPU3. 4 ODU2e is mapped into 2.5G tributary slots of OPU3e1. [Non-Normative] 1-4 ODUflex is mapped into 2.5G tributary slots of OPU2. [Non-Normative] 1-16 ODUflex is mapped into 2.5G tributary slots of OPU3. [Non-Normative]

8. Page - 875th IETF - Stockholm, Sweden, July 2009 Extension of Generalized Label New Generalized Label format is only defined for the new OTN application (i.e., ODU0, 1.25G ODU1, 1.25G ODU2, 1.25G ODU3, ODU2e, ODU3e1, ODU3e2, ODUflex and ODU4) Genralized Labels defined in RFC4328 and this draft can be used at the same time.RFC4328

9. Page - 975th IETF - Stockholm, Sweden, July 2009 The extension defined for new application must be backward compatible with RFC4328 for ODU1, ODU2 and ODU3 in order to protect the asset of deployment based on G.709 (2003/03).RFC4328 This document uses the Signal Type charactering the ODU multiplex structure and NMC to infer the format of Generalized Label. Backward Compatibility with RFC4328 Considerations

10. Page - 1075th IETF - Stockholm, Sweden, July 2009 Interworking Considerations There must be some considerations on interworking between G.709 (2003/03) and new OTN. Node DXC2, DXC4 and DXC5 should have the interworking capability.

11. Page - 1175th IETF - Stockholm, Sweden, July 2009 Interworking Considerations One 2.5G bandwidth LSP between DXC1 and DXC6: In the case of one end-to-end session, the tributary slot, Signal Type and NMC can be changed along the path.

12. Page - 1275th IETF - Stockholm, Sweden, July 2009 Interworking Considerations The LSP also can be setuped with multiple segment session (i.e., ODU1 LSP1, ODU1 LSP2, ODU1 LSP3, ODU1 LSP4). Signal Type and NMC in each segment LSP don't need to be changed any more.

13. Page - 1375th IETF - Stockholm, Sweden, July 2009 Next Step… Request feedbacks and comments. Further merging work for one single solution in the long term.