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G ÉANT2 Services & Architectures 3 rd EVN-NREN PoC Meeting

This presentation discusses the use of L2 connections and L2 VPNs for various projects across multiple domains. It also explores the optimization and enhancement of IP services and the aspirations for service improvement.

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G ÉANT2 Services & Architectures 3 rd EVN-NREN PoC Meeting

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  1. GÉANT2Services & Architectures3rd EVN-NREN PoC Meeting 28th January 2005, Schiphol Airport Michael Enrico Network Engineering & Planning, DANTE

  2. Various projects have been using pt-to-pt L2 connections (mostly GEth) Some single domain (just across GÉANT) Many across multiple domains (GÉANT & NRENs & regionals) Approach has been to use L2 VPNs (using MPLS) for GÉANT part Initially using vendor-proprietary techniques (Juniper CCC) More recently IETF (Martini-style) Hard work in multi-domain environment All hand-crafted (control plane based on SMTP & SS7!) Can take a few weeks to commission & troubleshoot P2P (“Lightpath”) Services

  3. GÉANT (IP/MPLS) CA*net4 (TDM) LSPs “stitched” together CESCA (Ethernet) RedIRIS (IP/MPLS) Example: UPC-CRC GE “Lightpath” GE STS-24 L2-VPN/LSP NY NY Madrid CRC (Ottawa) 10G UPC (Barcelona) Madrid GE L2-VPN/LSP VLAN Barcelona

  4. Versatility to better facilitate E2E services Continue to provide quality IP transit services Tune existing IP service platform Optimise platform (link delays, sort out Frankfurt, etc) Enhance resilience Offload DWS where possible Offer “Enhanced MBS” [or “lightpath” service] “Wavelength” services for big users Sub-wavelength services as well Develop automated (“on demand”) provisioning and advance scheduling Up to 10G Endeavour to be prepared to implement 40G services Overall Service Aspirations

  5. NREN A NREN C NREN B Mk V Mk V 10G  SURFnet 2.5G  JIVE GÉANT Today primary backup GE GE primary backup NxGE

  6. NREN A NREN C NREN B OXC and/or L2 switch DF DWDM 10G  SURFnet 2.5G  GÉANT2 primary Nx10G backup primary backup

  7. WS WS Reminder: GÉANT POP 1 or 2 x E3 to STM-64/10GE To NREN Primary IPaccess (POS) Backup IP / “project” access (POS or 10GE) Leased “lambdas” (2.5 or 10G) or SDH circuits (STM-1 or STM-4) to neighbouring POPs GE ISDN/PSTN … OOB Access Via ISDN and/or PSTN to terminal server (serial & LAN)

  8. Provision ofnew “lightpath”services Provision ofregular IPservices A GÉANT2 Hybrid POP 10 Gbps n  10 Gbps To NREN GÉANT2 POP Switch IP Router (POP LAN not shown) n  lambda to neighbouring POP n  lambda to neighbouring POP Probably continue withseparate transmissionfor IP network

  9. IP Service Resilience Options 10 Gbps n  10 Gbps Primary IP Peering Backup IP Peering To NREN GÉANT2 POP A Switch IP Router GÉANT2 POPB n  lambda to neighbouring POP n  lambda to neighbouring POP

  10. A GÉANT2 Large Hybrid POP to NREN N x 10G 10G N x 10G  N x 10G  WDM GÉANT2 POP Dark Fibre

  11. A GÉANT2 Small Hybrid POP to NREN single  single  GÉANT2 POP to other GÉANT2 POP to other GÉANT2 POP

  12. Equipment

  13. Next Gen means: Flexible reach (regional, LH & ULH application) Versatile transponders Tunability Multi-rate Software switchable for LAN/WAN at 10G Muxponders available “Plug and play” operation Automatic channel power balancing Upgrade path to support wavelength switching ROADMs available within next 1-2 years Control plane development Next Gen DWDM

  14. Features Fundamentally SONET/SDHcross-connects (up to 640G) CONTROL PLANE All have GE client interfaces 10GE being developed(most appear during 2005) L2 Fabric Support “recent” enhancements: - GFP-F / VCAT / LCAS L2 switching capability beingadded (typically during 2005) TDM Fabric Coloured interfaces on some STM-n XPNDR XPNDR G.ASON/GMPLS control planes GE GE STM-n STM-n STM-n STM-n 10GE 10GE Next Gen OXCs

  15. Features Large Ethernet switches All have high-density GE clientinterfaces 10GE (LAN) available now L2 Fabric 10GE (WAN) available on some (+ layer-3) Often have L3 awareness Some noises about support forGFP-F encapsulated Ethernet on“POS” interfaces GE GE GE GE GE GE STM-n STM-n 10GE 10GE 10GE 10GE Next Gen L2 Switches Highly QoS capable

  16. NREN C NREN A NREN B Mk V Mk V Mk V DF DWDM 10G  SURFnet 2.5G  JIVE Multi-domain Lightpaths primary Nx10G backup primary backup

  17. Questions

  18. Extra slides

  19. Scenario 1: P2P GEth (GÉANT borders: physical GEth – physical GEth) GÉANT Border GÉANT Border GÉANT2 NREN B NREN A GEth (GÉANT2 transport) Interconnects: N x physical GEth GEth (NREN transport) Physical GEth

  20. Scenario 2: P2P GEth (GÉANT borders: physical GEth – STM-16 or 64) GÉANT Border GÉANT Border GÉANT2 NREN B NREN A Interconnect: N x STM-16 or 64 GEth (GÉANT2 transport) GEth (NREN transport) Interconnect: N x physical GEth Physical GEth Eth/GFP/SDH

  21. Scenario 3: P2P GEth (GÉANT borders: physical GEth – physical 10GEth) GÉANT Border GÉANT Border GÉANT2 NREN B NREN A Interconnect: N x 10GEth GEth (GÉANT2 transport) GEth (NREN transport) Interconnect: N x physical GEth Physical GEth VLAN/10GEth

  22. Scenario 4: P2P GEth (GÉANT borders: physical 10GEth – STM-16 or 64) GÉANT Border GÉANT Border GÉANT2 NREN B NREN A Interconnect: N x STM-16 or 64 GEth (GÉANT2 transport) GEth (NREN transport) Interconnect: N x 10GEth VLAN/10GEth Eth/GFP/SDH

  23. Implies underlying SDH  Scenario 5: P2P 10GEth (GÉANT borders: physical 10GEth – physical 10GEth) GÉANT Border GÉANT Border GÉANT2 NREN B NREN A 10GEth (GÉANT2 transport) 10GEth (NREN transport) Interconnects: N x 10GEth Physical 10GEth(LAN or WAN)

  24. Scenario 6: P2P 10GEth (GÉANT borders: physical 10GEth – STM-64) GÉANT Border GÉANT Border GÉANT2 NREN B NREN A Interconnect: N x STM-64 10GEth (GÉANT2 transport) 10GEth (NREN transport) Interconnect: N x 10GEth Physical GEth 10GEth/GFP/SDH

  25. Scenario 7: P2P STM-n (GÉANT borders: STM-16/64 – STM-16/64) GÉANT Border GÉANT Border GÉANT2 NREN B NREN A SDH Interconnects: N x STM-16 or 64

  26. Offload DWS: Reduce commodity transit Add more in-county gateways Move shared gateways closer to largest users Possibly separate DWS from R&E traffic altogether Will aid in enforcing subscription limitations, stats gathering, etc Possible using switching infrastructure Free up IP backbone for true R&E traffic Aim to eliminate non-optimal transmission links where possible, e.g. CH (Geneva)  AT (Vienna) [currently goes via Stuttgart!] FR (Paris)  BE (Brussels) [currently goes via London!] Fix bottlenecks (notably): Frankfurt (DE1DE2) NY (NY1Abilene) IP Service Tuning: Overall

  27. DFN NL PL CZ FR AT IT Fix Frankfurt NL DFN SE AT DE2 DE1 FR IT CZ

  28. PROs Allows use of managed wavelength services Especially 2.5G “wavelengths” More deterministic transmission performance Less QoS complexity Better compatibility with GLIF Support for GFP-encapsulated Ethernet services More flexible interop with Internet2 Nortel HDXc being installed in MANLAN (NY) US-funded 10G transatlantic wavelength will land on HDXc at NY end More “intelligent” control plane features CONs More costly than L2-only switches Often large monolithic “telco-style” management systems Steep learning curve anticipated (especially for NOC staff) Enhanced L2 awareness emerging but slowly Pros & Cons of next-gen OXCs

  29. PROs More efficient utilisation of capacity through statistical multiplexing Lower costs than OXCs More familiar management paradigm (CLIs) CONs No STM services Difficult to use 2.5G “lambdas” in L2 mode Less mature graphical EMS/NMS’s Little control plane intelligence BW guarantees implemented using “DiffServ-like” techniques Pros & Cons of next-gen L2 switches

  30. PROs Ultimate transparency 40G ready More “intelligent” control plane features (depending on vendor) CONs Cannot access sub-wavelength signals Largely remains an untried technology Pros & Cons of OOO switches

  31. End of extra slides

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