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Multi Domain Traffic Engineered Transport Networks (E-OTN, PTN) supporting P2P, P2MP, RMP and MP2MP Ethernet Services An overview of architecture and functionality.

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Presentation on theme: "Multi Domain Traffic Engineered Transport Networks (E-OTN, PTN) supporting P2P, P2MP, RMP and MP2MP Ethernet Services An overview of architecture and functionality."— Presentation transcript:

1 Multi Domain Traffic Engineered Transport Networks (E-OTN, PTN) supporting P2P, P2MP, RMP and MP2MP Ethernet Services An overview of architecture and functionality in terms of 802.1Q modelling Maarten Vissers

2 Introduction E-OTN and PTN are multi domain, traffic engineered transport networks which support P2P, P2MP, RMP and MP2MP Ethernet services OTN network contains multiple OTN carrier networks OTN carrier networks contain OTN access, metro and core domains OTN network contains OTN network termination (NT), electrical switching and optical switching (SW) equipment OTN equipment at edge of domains is extended with Ethernet Switch functionality 2

3 EOTN example OTN Core OTN Metro OEO OE OCH XC N-degree ROADM ODU XC OEO OE OCH XC/ADM N-degree ROADM ODU XC OEO OCH XC N-degree ROADM OEO OE OCH XC N-degree ROADM ODU XC OEO OCH XC N-degree ROADM OEO OCH XC N-degree ROADM OEO OE OCH XC/ADM N-degree ROADM ODU XC OEO OE OCH XC/ADM N-degree ROADM ODU XC OEO OE OCH XC/ADM N-degree ROADM ODU XC OEO OCH XC/ADM N-degree ROADM OEO OCH XC/ADM N-degree ROADM OEO OCH XC/ADM N-degree ROADM OEO OCH XC/ADM N-degree ROADM NT OE OEO OE OCH XC N-degree ROADM ODU XC Ethernet Switch OE OEO OE OCH XC N-degree ROADM ODU XC Ethernet Switch OE NT OE OEO OE OCH XC N-degree ROADM ODU XC Ethernet Switch OE OEO OE OCH XC N-degree ROADM ODU XC Ethernet Switch OE NT OTN Network Termination Ethernet Network Termination Hybrid Ethernet & OTN Network Termination ODU OTN Access SW OTN/EOTN Switch MAC Relay functions interconnected via OTN ODU connections MAC Relay functions are interconnected via OTN ODU connections MAC Relay functions interconnected via OTN ODU connections MAC Relay functions are interconnected via OTN ODU connections or S- or I-Tagged LANs 3

4 EOTN and PBN EOTN adds one transport VLAN layer on top of its OTN layer stack EOTN can be viewed in this respect as a transport PBN in which the physical ports are replaced by G.709/G.7041 physical ports and TPMR type reserved address transparency EOTN deploys the 802.1Q features complemented by specific transport network features defined in Y.1731, G.8021, G.8031, G.8051 and G

5 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 S-VLAN Component 88-a8 Table 8-2 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 S-VLAN Component 88-a8 Table Q Provider (Edge) Bridges (starting point) C-VLAN Component Table 8-1 S-VLAN Component with 88-a8 and Table 8-2 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 Provider Edge Bridge C-tagged service interfaces (CTSI) S-tagged service interface (STSI) Port-based service interface (PBSI) Provider Bridge Provider Edge Port Customer Edge Ports Customer Network Port Provider Network Ports Provider Network Ports Customer System C-VLAN Component Table 8-1 Provider Access Ports C-tagged service interfaces Remote customer service interfaces (RCSI) Port-based service interface Access Networks Provider Bridge Provider Network Ports S-VLAN Components operating on TPID 88-a8 with S-VLAN Reserved Address transparency (Table 8-2), IVL and SVL (multi-vid E-Tree), VID translation, xSTP/xVRP S-VLAN Component 88-a8 Table 8-2 Customers Provider Bridge PNP 5

6 802.1Q port types Many of the 802.1Q port types are variations of a common port which supports a single VLAN multiplexing instance (clause 6.9) with configurable: Tag type (TPIDs: 81-00, 88-a8), Acceptable Frames Type untagged set member Up MEPs, Up MIPs Down MIPs, Down MEPs Down MEP below clause 8.5 6

7 802.1Q port types 7 CEPPEPCNP port based CNP tagd PNPRCAPPAP Common Port Tag type CCSSSSSC/S Admit Only VLAN-tagged frames YYNYYYNY/N Admit Only Untagged and Priority- tagged frames YNYNNNYY/N Admit All frames YYN?N?NY/N PVID YYYYYY/N Enable Ingress Filtering NYNY/N Member of untagged set OOYN-YY/N Up MEP NNYYNNNY/N Up MIP YNN|YYYNNY/N Down MIP YNN|YYYNNY/N Down MEP NNNNNNNY/N Down MEP below c8.5 YNN|YYYYNY/N Specific Configurations of Common Port

8 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 S-VLAN Component 88-a8 Table 8-2 EOTN (Edge) Bridges (based on provider (edge) bridges) C-VLAN Component Table 8-1 VLAN Component VLAN Component EOTN Edge Bridge Transparent Service Interface Port Based Service Interface EOTN Bridge CEP OTN Network Ports Customer System C-VLAN Component Table 8-1 Customers Provider Bridge CEPPAP PEP CNP CTSI CNP PNP RCAP PNP PEP ONP EOTNs VLAN Component deploys: ONP instead of PNP ports, and transport Ethernet specific features S-VLAN Component 88-a8 Table 8-2 Customers Provider Bridge PNP Individual S-VLAN Service Interface 8

9 OTN Network Port functionality OTN Network Ports combine 802.1Qs Provider Network Port functionality with an OTN physical layer Ethernet MEP and MIP functions Includes support for Y.1731 Ethernet OAM, G.8021 OAM processing and G.8031 APS OAM Ethernet to OTN (de)mapping/(de)muxing functions: Support of the EISS Tag insertion/extraction Support of the ISS by additional technologies GFP-F/OTN Up MPs (6.17, 19.2, 19.3) Port filtering entities (8.6.1/2/4/5) Down MPs (6.17, 19.2, 19.3) Linktrace Output Multiplexer (19.5) Queuing entities (8.6.6/7/8) Support of the EISS Support of the ISS by additional technologies (6.15) OTN ODU Down MP GFP-F Tagging Up MPs (6.17, 19.2, 19.3) Port filtering entities (8.6.1/2/4/5) Down MPs (6.17, 19.2, 19.3) Linktrace Output Multiplexer (19.5) Queuing entities (8.6.6/7/8) Support of the EISS Support of the ISS by additional technologies (6.15) OTN ODU Down MP Frame filtering (8.6.3) EISS ISS EISS ISS OTN other functions Supports G.8031 SNC Protection OTNNETWORKPORTsOTNNETWORKPORTs Supports Y.1731 OAM 9 PNP equivalent OTN specific

10 MAC SDU TYPE PLI GFP Core Header GFP Payload Header DA MAC FCS VLAN Tag PTI=000:Client Data PFI=0: no Payload FCS EXI=000: Null Extension Header UPI= : Frame Mapped Ethernet PTIEXI cHEC PFI UPItHEC DASA TPIDPCP DEI VID ODUk with GFP-F encapsulated Ethernet frames with VLAN Tag GFP IDLEs ODUk bit rates 1.25G 2.5G 3.75G 5G 6.25G 7.5G 8.75G 10G 11.25G : 100G

11 EOTN service set 11

12 EOTN Requirements Transport all MEF (G.8011.x) services over OTN Transport all service interfaces over OTN Support the management of all above services simultaneously using a single forwarding function Transport by using a unique edge-to-edge layer that is separated from the customer 12

13 EOTN Edge Bridge – Extended service set EOTN is required to support any type of Tagged service, including bundled S- Tagged and I-Tagged services, over a single Ethernet (ETH) layer EOTN Edge Bridge can support those services by deploying additional CNPs and CBPs and connecting those to customer PIPs and CBPs as illustrated in the next slide 13

14 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 S-VLAN Component 88-a8 Table 8-2 EOTN Edge Bridge – Extended service set C-VLAN Component Table 8-1 VLAN Component VLAN Component EOTN Edge Bridge EOTN Bridge CEP Customer System C-VLAN Component Table 8-1 Customers Provider Bridge CEPPAP PEP CNP CTSI CNP RCAP PNP PEP ONP bundled S-VLAN service interface CBP BSI (bundled) service interface I- Component Customers I-BEB/B-BEB/T-BEB PIP B- Component CBP CNP PNP BSI (bundled) service interface S-VLAN Component 88-a8 Table 8-2 Customers Provider Bridge PNP CBP PIP BSI transparent service interface CNP BSI transparent service interface Reuse of existing CNP and CBP ports on the EEB supports BSI individual and/or bundled services, transparent services and S- VID/S-PCP/S-DEI preserving (bundled) S- Tagged services PNP Individual S-VLAN Service Interface Transparent Service Interface Port Based Service Interface T- Component CNPPIP BSI transparent service interface CNP 14

15 EOTN (Edge) Bridges – Transparency Support of Transparent Services by the EOTNs Ethernet service (ETH VC) layer requires TPMR type transparency (Table 8- 3) S-Tag does not provide such transparency EOTN should deploy a new VLAN Tag associated with: TPMR type transparency Transport network type operation, management and control 15

16 Choice of Tag in EOTN (Edge) Bridge Tag choice New Transport VLAN Tag with 12-bit T-VID (ETH VC ID) & TPMR Reserved Address transparency (table 8-3/802.1Q) I-Tag with 24-bit I-SID; UCA-bit deals with T-VLAN (ETH VC) frames with or without network MAC addresses (N-DA, S-DA) Tag is terminated in the Support of the EISS functions in ONP vlan_identifier parameter represents in EM_UNITDATA the 12- bit T-VLAN ID or 24-bit I-SID Existing devices already support VLAN Tag with 12-bit ID; EtherType is configurable per port Devices do not support an I-SID based vlan_identifier parameter VLAN Tag with new Transport VLAN type TPID value is best fit TPID = xx-xxT-VID (ETH VC ID)PCP DEI New VLAN Tag 4-octets TPID = 88-E7I-SID (ETH VC ID)PCP DEI I-Tag 18-octets RES2 2 UCA 1 RES1 1 DA SA 16

17 EOTN port types (based on provider (edge) bridge ports) 17 CEPPEPCNP port based CNP tagd PNPRCAPPAP Common Port ONP Tag type CC S / T SSSS C/S /T T Admit Only VLAN-tagged frames YYNYYYNY/NY Admit Only Untagged and Priority- tagged frames YNYNNNYY/NN Admit All frames YYN?N?NY/NN PVID YYYYYY/N Enable Ingress Filtering NYNY/NN Member of untagged set OOYN-YY/NN Up MEP NNYYNNNY/NN|Y Up MIP YNN|YYYNNY/NY Down MIP YNN|YYYNNY/NY Down MEP NNNNNNNY/NN|Y Down MEP below c8.5 YNN|YYYYNY/NN Same basic set of ports Additional Tag type Additional Port type Specific Configurations of Common Port

18 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 S-VLAN Component 88-a8 Table 8-2 EOTN (Edge) Bridge C-VLAN Component Table 8-1 T- VLAN Component with and Table 8-3 T-VLAN Component Table 8-3 T-VLAN Component Table 8-3 EOTN Edge Bridge EOTN Bridge CEP Customer System C-VLAN Component Table 8-1 Customers Provider Bridge CEPPAP PEP CNP CTSI CNP RCAP PNP PEP ONP bundled S-VLAN service interface CBP BSI (bundled) service interface I- Component Customers I-BEB/B-BEB/T-BEB PIP B- Component CBP CNP PNP BSI (bundled) service interface S-VLAN Component 88-a8 Table 8-2 Customers Provider Bridge PNP CBP PIP BSI transparent service interface CNP BSI transparent service interface PNP Individual S-VLAN Service Interface Transparent Service Interface Port Based Service Interface T- Component CNPPIP BSI transparent service interface CNP 18 T-VLAN component is a VLAN type Component operating on TPID: with TPMR Reserved Address transparency (Table 8-3), ONP instead of PNP ports, IVL and SVL (multi- vid E-Tree/E-LAN), independent ingress/egress VID translation, disabled xSTP/xVRP, Y.1731/G.8021 OAM and G.8031 Ethernet VLAN SNC protection.

19 MAC SDU TYPE PLI GFP Core Header GFP Payload Header DA MAC FCS Transport-VLAN Tag PTI=000:Client Data PFI=0: no Payload FCS EXI=000: Null Extension Header UPI= : Frame Mapped Ethernet PTIEXI cHEC PFI UPItHEC DASA TPID= PCP DEI T-VID ODUk with GFP-F encapsulated Ethernet frames with T-VLAN Tag GFP IDLEs ODUk bit rates 1.25G 2.5G 3.75G 5G 6.25G 7.5G 8.75G 10G 11.25G : 100G

20 EOTN summary 20

21 EOTN Summary EOTN requires a minimal extension of 802.1Q functions and ports: Additional OTN Network Port with a Support of the EISS function which operates on a new T-Tag associated with TPMR Reserved Address transparency Existing CNPs and CBPs with a Support of the EISS function which operates on a new T-Tag associated with TPMR Reserved Address transparency 21

22 PTN 22

23 Q.9/15 liaison on G.ptneq: Next Step PTN VC/VP/VS layers may be supported by the Ethernet technology including ETH OAM(Y.1731,G.8021), ETH protection switching(G.8031,G.8032), ETH connection management (G.8051, G.8052). The use of Ethernet technology in PTN requires an extension of the tagging option defined in 802.1Q to support VC, VP, VS stacking in single and multi- domain scenarios. ITU-T Q9/15 would like to progress this work in cooperation with IEEE

24 Ethernet PTN Ethernet PTN network contains a PBN like transport VLAN (ETH VC) layer (same as EOTN) Those transport VLANs may be transported in P2P server VLANs (ETH VPs) instead of in P2P ODUs in EOTN, or P2P LSPs in MPLS-TP/VPLS This requires PTN Network Ports (PTNP) which support 2-stage VLAN multiplexing and optional priority-tagging 24

25 Linktrace Output Multiplexer (19.5) Down MPs (6.17, 19.2, 19.3) Priority Tag (6.13) Down MPs (6.17,19.2) PTN Network Port (PTNP) 25 Up MPs (6.17, 19.2, 19.3) Port filtering entities (8.6.1/2/4/5) Down MPs (6.17, 19.2, 19.3) Linktrace Output Multiplexer (19.5) Support of the EISS (6.9) Support of the ISS (6.7) MAC Frame filtering (8.6.3) EISS ISS PTNPPTNP PTN-Tagged LAN Linktrace Output Multiplexer (19.5) Support of the EISS (6.9) EISS ISS EISS ISS EISS NxISS ISS VC Tag VP Tag VS Tag

26 Hierarchy Multi-stage connection hierarchy is a normal means deployed in the latest generation circuit and packet transport networks to scale these networks OTN supports up to 4 ODU multiplexing stages (more to follow) MPLS-TP supports an unrestricted number of LSP multiplexing stages An Ethernet based PTN should have the capability to support such multi-stage connection hierarchy VLAN Tags should therefore be stackable VP and VS transport VLANs are P2P VLANs (without MAC based forwarding) set up by transport network management and control systems 26

27 VP VS VP VS In multi-domain case the layer relationship is relative and the names represent their role in each domain; some examples: Top Default case, no additional hierarchy Middle VP in Domain 1 is VC in Domain 2 VP in Domain 2 is VC in Domain 3 Bottom VS in Domain 1 is VC in Domain 2 VS in Domain 2 is VC in Domain 3 Each domain operates on the lower three layers and is unaware of the higher layers VC VP VS VC VP VS VC VP VS Domain 1Domain 2Domain 3 Hierarchy for multiple domains VC VP VSVC VP VSVC VP VS Page 27 VC VP VS VSVS VSVS

28 Domain interconnect examples VLAN Hierarchy Extension 28 DOMAIN ADOMAIN B VC A VP A VS A =VC B VP B VS B VC A VP A VS A VP A =VC B VP B VS B

29 T-VLAN Component Table 8-3 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 S-VLAN Component 88-a8 Table 8-2 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 C-VLAN Component Table 8-1 S-VLAN Component 88-a8 Table 8-2 E-PTN (Edge) Bridges (based on eotn (edge) bridges) C-VLAN Component Table 8-1 T-VLAN Component with and Table 8-3 T-VLAN Component Table 8-3 E-PTN Edge Bridge E-PTN Bridge CEP Customer System C-VLAN Component Table 8-1 Customers Provider Bridge CEPPAP PEP CNP CTSI CNP RCAP PNP PEP PTNP S-VLAN bundled service interface CBP BSI (bundled) service interface I- Component Customers I-BEB/B-BEB/T-BEB PIP B- Component CBP CNP PNP BSI (bundled) service interface S-VLAN Component 88-a8 Table 8-2 Customers Provider Bridge PNP CBP PIP BSI transparent service interface CNP BSI transparent service interface CNPMPEP CNPMPNP PNP Transparent Service Interface Port Based Service Interface Individual S-VLAN Service Interface T- Component CNPPIP BSI transparent service interface CNP 29 PTN Network Ports ONPs are replaced by PTNPs

30 PTN Summary An Ethernet based PTN requires the development of a PTN Network Port (PTNP), which supports 2- stage VLAN multiplexing and transport specific Ethernet features A stackable VLAN Tag is required to support the single and multi-domain ETH VC/VP/VS (VLAN) hierarchy 30

31 Annex 31

32 Transport network specific Ethernet features Alarm suppression Additional Y.1731, G.8021, G.8031, G.8032 Ethernet OAM frames G.8031 VLAN linear protection (ETH SNC protection) G.8032 VLAN ring protection VLAN IDs have a link local scope and VID Translation is used to map the local VID on each link onto the Relay VID inside a node Number of FIDs is equipment specific and not limited to 4094 (as specified in 8.8.8/802.1Q); e.g. could also be 16k, 32k, 64k, 128k,... VLAN connection management with network management or GMPLS control plane without spanning tree protocol (MSTP) and without VLAN registration protocol (MVRP) 32


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