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The new Janet access architecture

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A presentation by James Blessing at our Tech 2 Tech event.

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The new Janet access architecture

  1. 1. The new Janet access infrastructure James Blessing
  2. 2. What we’re deploying
  3. 3. Example topology Core 1 Core 2 RNEP A RNEP B Co-Lo 1 Co-Lo 2 Co-Lo 6 Co-Lo 5 Co-Lo 3 Co-Lo 4 Site 1 Site 2a Site 2b Co-Lo 4a Co-Lo 4b Site 3 Router A Router B
  4. 4. Equipment options » Ciena 5170 › Layer 2 › RegionalAggregation or 100G NTE – I.e. in the co-location PoPs and RNEPs › 1 rack unit › 4 x 100GE ‘grey’ (QSFP28) ports – Scalable up to a 200G regional aggregation ring › 40 x 10GE – Access, or multiples of 10GE for lower-demand sub-rings
  5. 5. Equipment options » Ciena 5171 › Layer 2 › RegionalAggregation › 2 rack unit › 2 x “Sleds” – 2x100G coherent – 1x 100G coherent + 1 QSFP28 – Other sleds to be launched › 40 x 10GE – Access, or multiples of 10GE for lower-demand sub-rings, 4 port can run at 25G
  6. 6. Equipment options » Ciena 8700 › Layer 2 › 10 slot – PSLM-680-8: 6x QSFP28, 2x QSFP+ – PSLM-400-31: 30x SFP/SFP+, 1x QSFP28 – PSLM-200-20: 20x 1GbE/10GbE SFP/SFP+ – PSLM-200-2: 2x 40GbE/100GbE CFP ports – CSLM-200-2: 2x 100G OTU-4 wrapped 100GbE over WaveLogic 3 Nano DWDM ports – PSLM-200-11: 10x SFP/SFP+, 1x QSFP28 ports – More cards in development › RNEPs & regional aggregation 08/11/2019 The new Janet access infrastructure 6
  7. 7. Equipment options: NTE » Ciena 3903 / 3926 / 3928 › 3903 – 2 network-facing 1G ports, 2 user-facing 1G ports › 3926 – See next slide › 3928 – 4 x 1G / 10G SFP ports – 8 x 1G SFP ports
  8. 8. Equipment options: NTE »3926m › 6 x 1G / 10G SFP+ ports › 2 x 100M / 1G ports › Modular: option for embedded x86 processor › Virtual machines for router, firewall, DPI, IDS, flow optimisation, site-to-siteVPNs, Safe Share, performance monitoring…? › Evaluating performance in the lab 08/11/2019 Tech 2 Tech: Future Services on Janet 8
  9. 9. Equipment options: Optical » Ciena 6500 › To be used as mux/demux in regions with dark fibre › Other deployments possible for high capacity or extended reach – E.g. two slot module as a 100G transponder 08/11/2019 The new Janet access infrastructure 9
  10. 10. What will this look like? 08/11/2019 The new Janet access infrastructure 10
  11. 11. IP service delivery Core 1 Core 2 RNEP A RNEP B Co-Lo 1 Co-Lo 2 Co-Lo 6 Co-Lo 5 Co-Lo 3 Co-Lo 4 Site 1 Site 2a Site 2b G.8032 Ethernet Ring Co-Lo 4a Co-Lo 4b G.8032 Sub-Ring Site 3 Router A Router B
  12. 12. PoP to PoP PoP A PoP B Site 2Site 1 Site 3
  13. 13. Ethernet ring protection »G.8032/Y.1344 › Less than 50ms protection switch –(Assuming fibre ring < 1,200km!) › Protection at layer 2, so do not need to wait for IP to reconverge on link failure within a region
  14. 14. Layer 2 reroute Core 1 Core 2 RNEP A RNEP B Co-Lo 1 Co-Lo 2 Co-Lo 6 Co-Lo 5 Co-Lo 3 Co-Lo 4 Site 1 Site 2a Site 2b G.8032 Ethernet Ring Co-Lo 4a Co-Lo 4b G.8032 Sub-Ring Site 3 Router A Router B
  15. 15. IP protection »If an RNEP fails, still need to switch to the other RNEP at layer 3 »Bidirectional Forwarding Detection (BFD) › Rapidly detect failures that might be hidden at layer 2 –IP access may just be aVLAN on an interface that stays up › NOC will configure on MRS routers › Member to configure on non-MRS L3 devices › Static routes tied to BFD, or BGP session tied to BFD.
  16. 16. Ethernet Diagnostics »Check circuit before being brought into service › RFC2544 /Y.1564 – Loss – Delay – Throughput »Performance monitoring › CFM /Y.1731 – Delay – Jitter – Loss »Improved visibility of Netpaths through the aggregation infrastructure
  17. 17. Presentation »Services delimited byVLANs › Or additional ports on the NTE »Services might be › IP › ExpressRoute › Netpath
  18. 18. Scalability »If using OSA FC, upgrades will be down to engineer time. › New port on the 5170, re-use the NTE if it’s a 3926/3928. › No involvement from Openreach »Upgrades to regional aggregation rings › Insert SFPs, connect to the OSA FC filters.
  19. 19. Questions and discussion? 08/11/2019 The new Janet access infrastructure 19

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