Geneva, Switzerland, 13 July 2013 Ethernet Protection and Packet Synchronization Seminars/ethernet/201307/Pages/default.aspx Joint IEEE-SA and ITU Workshop on

Geneva, Switzerland, 13 July 2013 Moderator Summary Ethernet Protection Summary Ghani Abbas, Ericsson – ITU-T SG15 vice chair Steve Haddock – IEEE Interworking chair Glenn Parsons, Ericsson – IEEE vice chair Joint IEEE-SA and ITU Workshop on Ethernet

Geneva, Switzerland, 2 13 July Summary ….. 1/2 IEEE 802.1AX LAG is being revised to provide node and link redundancy, address dual-homed interconnects, and congruent per-service traffic distribution. Expected Standards 1H2014 New Project p802.1CB started to identify and replicate frames and eliminate these frames in seamless protection scheme New project p802.1 Qca -Path Control and Reservation (PCR) started. It leverages SPB for explicit Path establishment as well as reservation and redundancy

Geneva, Switzerland, 13 July G.Supplement 52 for G.8032 was approved. It provides scenarios for: - Ethernet services support - Ring interconnections -Network applications and use cases New work G.mdsp provides protection interworking for UNI/NNI network scenarios using ITU approved protection schemes (OTN and Ethernet) MECP is under study. It addresses protection of single rooted-multipoint (RMP) Ethernet connections in Ethernet transport networks. Summary …..2/2

Geneva, Switzerland, 13 July 2013 Moderator Summary Packet Synchronization Jean-Loup Farrant – ITU-T SG15 Q13 rapporteur Michael Johas Teener – IEEE TSN chair Joint IEEE-SA and ITU Workshop on Ethernet

Geneva, Switzerland, 13 July G (PTPprofileFrequency) G (PTPprofile1Time/phase) Basics Clock Methods Profiles Frequency: G.826xTime/Phase:G.827x G.8265.m (PTP Profile frequency m) G (NetwkPDV_frequency) G (Network limits_time/phase Network requirements SyncE Jitter-Wander: (Included in G.8261) G.8261 G.8271 G.8272 PRTC G.8273 G.8275 (architecture-time) G.8262 (SyncE) G.8264 (SyncE-architecture-SSM) G.8265 (architecture-Frequency) G (PTPprofile2Time/phase ) G (profile2) Definitions / terminology G.8260 (Definition) 73.1 GM 73.2 BC 73.3 TC G.8260 AppI (metrics) Overview of Q13 recommendations Ongoing Agreed G.8263 (slave clock) 73. x,y,z G.supp

Summary of the Synchronization sessions -1 IEEE 1588 Revision Fix existing problems, remove inconsistancies Improve accuracy, security, configuration and MIBs Layered architecture, but backwards compatible Backward compatibility is very important for operators IEEE 802.1AS Revision Additional link types, link aggregation Redundancy and faster reconfiguration Architectural convergence with 1588 Geneva, Switzerland,13 July

Summary of the Synchronization sessions -2 3 IEEE Issue One step clock One-step clock implies the implementation of hardware that greatly reduces the processor requirements for synch and delay processing Backwards compatibility a requirement IEEE 1588 simulations for G.827x & 802.1AS The proposed G.827x and 802.1AS profiles will meet their goals Partial support still to be performed in ITU Geneva, Switzerland,13 July

Summary of the Synchronization sessions -3 Network limits-Asymmetry Asymmetry remains one of the main issues in the transport of time. Partial support might add new sources of asymmetry Synchronization network architecture Key aspects of NGN synchronization Packet network infrastructure New synchronization requirements New methods New clock structures Architecture helps see how all pieces fit together Geneva, Switzerland,13 July

Summary of the Synchronization sessions - 4 Geneva, Switzerland,13 July Q Stream reservation protocol deterministic operation requires that resources are available based on 802.1Q Multiple Registration Protocol talkers advertise the streams that they can source Important side-effect sets up a reservation « domain » listeners register for streams New work under way static reservations, faster startup, big reduction in packet traffic, support for new shapers, more management

Summary of the Synchronization sessions Qbv scheduled traffic Scheduling stream transmission can greatly reduce delays through switches Cut-through makes sense Management of schedule is not a plug- and-play operation, it will require intelligence Geneva, Switzerland,13 July

Summary of the Synchronization sessions -6 G.8275.x profiles G.8275.x time PTP telecom profiles are designed to support the needs of current and future mobile technologies G (full timing suport) will be finalized soon, G (partial timing support) is just starting Geneva, Switzerland,13 July