Joint ITU-T/IEEE Workshop on Carrier-class Ethernet

Transcription

1 Joint ITU-T/IEEE Workshop on Carrier-class Ethernet Standards Overview ITU-T Activities on Ethernet Networking Dr. Stephen J. Trowbridge, Alcatel-Lucent Vice-Chairman, ITU-T Study Group 15 Chairman, ITU-T Working Party 3/15

2 Ethernet Service Model and relevant standards domains Ethernet LAN interface IEEE Customer Edge Network Termination OTN NNI ITU-T SG15 Q6/15 Optics Q11/15 Signal structures, mappings, services Network Termination Ethernet LAN interface IEEE Customer Edge ETY-UNI-C ETY-UNI-N NNI NNI ETY-UNI-N ETY-UNI-C ETY-UNI Service Demarcation Point EoT NNI (Ethernet over Transport PDH, SDH, OTN, T-MPLS) ETY-UNI Service Demarcation Point

3 Ethernet Service Model Packet oriented Services EPL Type 1, EVPL, EVPLAN, E-Tree Ethernet LAN interface IEEE Customer Edge MAC RS PCS PMA PMD ETY-UNI-C Network Termination MAC RS PCS PMA PMD ETY-UNI-N -F PDH/ SDH/ OTN/ T- MPLS NNI OTN NNI ITU-T SG15 Q6/15 Optics Q11/15 Signal structures, mappings, services Network Termination -F MAC PDH/ RS SDH/ PCS OTN/ PMA T- MPLS PMD NNI ETY-UNI-N Ethernet LAN interface IEEE Customer Edge MAC RS PCS PMA PMD ETY-UNI-C ETY-UNI Service Demarcation Point EoT NNI (Ethernet over Transport PDH, SDH, OTN, T-MPLS) ETY-UNI Service Demarcation Point

4 Ethernet Service Model Transparent Circuit oriented Services EPL Type 2, etc. Ethernet LAN interface IEEE Customer Edge MAC RS PCS PMA PMD ETY-UNI-C Network Termination PCS PMA PMD ETY-UNI-N -T /CBR SDH/ OTN OTN NNI ITU-T SG15 Q6/15 Optics Q11/15 Signal structures, mappings, services NNI Network Termination NNI -T /CBR SDH/ OTN PCS PMA PMD ETY-UNI-N Ethernet LAN interface IEEE Customer Edge MAC RS PCS PMA PMD ETY-UNI-C ETY-UNI Service Demarcation Point EoT NNI (Ethernet over Transport) ETY-UNI Service Demarcation Point

5 Encapsulating Ethernet Frames in & -F Part of ETH/Trans or ETH/Trans-VCAT Adaptation PLI chec PTI PFI EXI UPI PA SFD MAC FCS DA SA MAC SDU thec octets 4 octets Core Header (4 octets) Payload Header (4 octets) Payload Information Field ( N octets, 2000 N 65531) MAC FCS IDLE -F 4 octets

6 Ethernet Private Line Service Type 1 into Transport Server Layer Network ETH_FP ETH ETH_FP ETH_FP ETH ETH_FP ETYn/ETH Trans/ETH Trans/ETH ETYn/ETH ETYn Traffic Conditioning Function Trans -F Encapsulation Trans ETYn Trans = PDH, SDH, OTN Transport Transport Server Server Layer Layer Network Network

7 Virtual Concatenation OTN Example ODUk-Xv/ODUk-X-L Adaptation 14X+1 14X+2 15X 15X+1 15X+2 16X 3823X X Ultra-high rate bit stream HDR DA SA M_SDU FCS OPUk-Xv OH (4 2 X bytes) OPUk-Xv Payload ( X bytes) OPUk overhead columns inserted/processed 4 by ODUk termination function VCOH PSI OPUk OH VCOH PSI OPUk Multiple OH lower rate streams for transport across network OPUk Payload ( bytes) 3824 OPUk Payload ( bytes) OPUk #1 OPUk #X OPUk-Xv Consecutive bytes of original bitstream are distributed to each lane of the VCAT group. No packet can be retrieved from only one lane.

8 Ethernet Private Line Service Type 1 Virtual Concatenation into lower rate Server layer ETH_FP ETH ETH_FP ETH_FP ETH ETH_FP ETYn/ETH Trans-Xv/ETH Trans-Xv/ETH ETYn/ETH ETYn Trans-Xv Trans-Xv ETYn Trans-Xv/Trans-X-L Trans-Xv/Trans-X-L Trans Trans Trans Trans Transport = PDH, SDH, OTN Transport Transport Server Server Layer Layer Network Network Note that client and server do not have to be the same bitrate. The server must support at least the CIR for the service

9 VCAT Group Sizes PDH VCAT Minimum payload Maximum payload Step size DS1-Xv, X = 1 to E1-Xv, X = 1 to E3-Xv, X = 1 to DS3-Xv, X = 1 to SDH VCAT Minimum payload Maximum payload Step size VC-11-Xv, X = 1 to VC-12-Xv, X = 1 to VC-3-Xv, X = 1 to VC-4-Xv, X = 1 to OTN VCAT Minimum payload Maximum payload Step size ODU1-Xv, X = 1 to ODU2-Xv, X = 1 to ODU3-Xv, X = 1 to

10 Encapsulating Ethernet PCS in & -T Part of ETC3/VC4-7v Adaptation Decode 8B Encode 8x8B 65B Leading (Flag) bits of each 65B group in trailing octet indicate presence of control characters PLI chec Core Header (4 octets) PTI PFI EXI Nx8 UPI thec Payload Header (4 octets) 65B Payload Information Field (Nx67 octets) 65B LLLLLLLL IDLE CRC16 -T 4 octets

11 Ethernet Private Line Service Type 2 for GbE using Virtually Concatenated Server VC4-7v ETY3/ETC3 VC4-7v/ETC3 VC4-7v/ETC3 ETY3/ETC3 ETY3 VC4-7v VC4-7v ETY3 VC4-7v/VC4-7-L VC4-7v/VC4-7-L VC4VC4VC4VC4VC4VC4VC4 VC4VC4VC4VC4VC4VC4VC4 SDH SDH VC4 VC4 Server Server Layer Layer Network Network

12 Transport Ethernet Recommendations Transport Plane Architecture G.8010 Ethernet Termi nology G.8001 Ethernet G.8011 Framework G EPL G EVPL Services Transport Plane NNI and UNI specifications Y.1731 OAM G.8012 UNI, NNI G EVPLAN G E-Tree Transport Plane Equipment & Protection G.8031 protection G.8021 equipment G.8080 ASON Control Plane Architecture Management G.8051 G.8052 Q eot-mgmt NMS-EMS I/F EMF eot-info infomodel Data Comm Network G.7712 DCN approved Rec consented Rec Rec under revision Rec in progress Rec started Rec planned

13 Transport Ethernet Interface Recommendations & Standards Transport Plane Ethernet NNI and UNI G.8012 UNI, NNI Y.1731 ETH OAM Transport Plane NNI and UNI G.707 SDH G.709 OTN G.8040 inpdh G.7043 VCAT PDH G.704 PDH G.832 PDH IEEE Generic Framing Procedure and Link Capacity Adjustment G.7041 G.7042 LCAS Optical Interfaces G.957 SDH G SDH,OTN IrDI G.691 SDH G.693 SDH,OTN IrDI G CWDM grid G.695 CWDM IaDI G DWDM IaDI G DWDM Metro G DWDM Metro/OA approved Rec consented Rec Rec under revision Rec in progress Rec started Reco not planned yet

14 ITU-T Groups involved with Ethernet ITU-T SG 15 Optical and other Transport Networks WP 3/15 OTN Structure Q3/15 General characteristics of optical transport networks G.8001 OTNT SWP Q9/15 Transport equipment and network protection/restoration G.8021 G.8031 G.8032 Q11/15 Signal structures, interfaces and interworking for transport networks G.8012 G.8011 G G G G Q12/15 Transport network architectures G.8010 G.8080 Q14/15 Management and control of transport systems and equipment G.8051 G.8052 G.7712 G.832 G.8040 G.707 G.709 G.704 G.7041 G.7042 G.7043 Q13/15 Timing & Sync ITU-T SG 13 Next Generation Networks WP 4/13 QoS and OAM Q5/13 OAM and network management for NGN Y.1731 WP 2/15 - OTN Technology Q6/15 Characteristics of optical systems for terrestrial transport networks G.957 G G.691 G.693 G G.695 G G G Ethernet Specific Generic Transport (Server for Ethernet)

15 Optical Transport Networks & Technology Standardization Workplan Tracking of standards status, gap analysis and relationships across multiple ITU-T Study Groups and other standards organizations including IEEE, MEF, IETF, TMF Several sections apply to Ethernet: 5.4 Ethernet Frames over Transport 5.5 Carrier Class Ethernet Available for free download from ITU-T Website: Updated frequently (at a minimum, at each ITU-T SG15 plenary meeting) Coordinate input from other Standards Organizations via liaison statements

16 EPL ETCn ETH E-Tree ETYn EVPL EVPLAN LCAS NNI OAM ODU UNI VC Acronyms Ethernet Private Line Service Ethernet coding (e.g. PCS) layer for rate n (1=10Mb,, 4=10Gb, 5=100Gb) Ethernet Packet (MAC) Layer Root to Leaf connectivity service (e.g., BRAS to subscriber) Ethernet Physical Layer for rate n (1=10Mb,, 4=10Gb, 5=100Gb) Ethernet Virtual Private Line Service Ethernet Virtual Private LAN Service Generic Framing Procedure Link Capacity Adjustment Scheme Network-Network Interface Operations, Administration, Maintenance Optical Channel Data Unit User-Network Interface Virtual Container (SDH)