The new Janet access architecture
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The document discusses Janet's new access infrastructure, including the equipment options and topology. It will utilize Ciena equipment like the 5170, 5171, 8700, 3903, 3926, and 6500 to build regional aggregation rings and provide services to sites. Layer 2 Ethernet rings with G.8032 protection and BFD monitoring at layer 3 will provide redundancy. This infrastructure is meant to be scalable through modular equipment and simplify service delivery across Janet's network.
The new Janet access architecture
- 1. The new Janet access infrastructure James Blessing
- 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. 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. 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. 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. 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. 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. 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. What will this look like? 08/11/2019 The new Janet access infrastructure 10
- 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. PoP to PoP PoP A PoP B Site 2Site 1 Site 3
- 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. 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. 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. 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. Presentation »Services delimited byVLANs › Or additional ports on the NTE »Services might be › IP › ExpressRoute › Netpath
- 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. Questions and discussion? 08/11/2019 The new Janet access infrastructure 19
Editor's Notes
- #4: I’ll come back to this later in the presentation High level toplogy. Co-location in carrier neutral points of presence, mainly Openreach exchanges. Ethernet equipment in each PoP Layer 3 equipment only in the RNEPs. Three example sites, one single-homed, another with resilient access, and a third connected to a sub-ring.
- #5: This is the equipment that’s going to be in each PoP. Or at least for the first few regions we’re deploying. Performs layer 2 aggregation.
- #6: This is the equipment that’s going to be in each PoP. Or at least for the first few regions we’re deploying. Performs layer 2 aggregation.
- #8: We will be installing an NTE at the end of every line in the new access architecture. Visibility of the access line Possible use for service demarcation. In itself this is *not* intended to replace the MRS.
- #12: Layer 2 services back to the routers for IP. Ditto for other services such as ExpressRoute. More to come on G.8032 in a bit.
- #13: Shows how two neighbouring PoPs might be built. 4x10G backbone. Site 1 has 1G access. Site 3 has 10G access over OSA Filter Connect, so we can upgrade to 20G or more easily. Site 2 already has 20G resilient from two locations.