1. OSPF-TE Extensions for MLN/MRN based on OTN draft-rao-ccamp-mlnmrn-otn-ospfte-ext-03 Rajan Rao (rrao@infinera.com)rrao@infinera.com Khuzema Pithewan (kpithewan@infinera.com)kpithewan@infinera.com IETF-88 Nov’2013

2. Outline Overview Changes from 02 to 03 Next Steps

3. Overview This draft covers routing extensions for MLN/MRN (RFC 5212) based on OTN Extends IACD (RFC 6001) to include OTN layer identification Covers following interworking scenarios – OTN & Ethernet – OTN & FlexGrid – OTN & SONET/SDH – OTN & OTN

4. Changes from 02 to 03 Minor cleanups Section rearrangements – Contains interworking examples

5. Next Steps Would like to move the draft forward

6. Backup

7. Example Hybrid Node Ethernet Switch OTN Switch 10GigE 100GigE OTU4 300G IACD1 Upper SwitchCap/EncTyp : PSC/Ethernet Lower SwitchCap/EncType : OTN-TDM/G.709 ODUk SCSI : SignalType+Hierarchy ODU2-ODU4 (For 10GigE) Advertises ISCD_PSC, IACD1 Advertises ISCD_OTN, IACD1 IACD2 Advertises ISCD_PSC, IACD2 Advertises ISCD_OTN, IACD1 IACD2 Upper SwitchCap/EncTyp : PSC/Ethernet Lower SwitchCap/EncType : OTN-TDM/G.709 ODUk SCSI : SignalType+Hierarchy ODU4(For 100GigE)

8. Changes from 01 to 02 Layer ID TLV is modified to carry additional information to infer, if the Layer Identification belongs to upper region or lower region R bit is used to make sense whether the Layer ID is for Lower region or upper region. 1 means upper region and 0 means lower.