The new Janet access infrastructure
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James Blessing and Rob Evans
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The new Janet access infrastructure
- 1. The new Janet access infrastructure James Blessing & Rob Evans
- 2. What we’re deploying Rob Evans,Chief Network Architect
- 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 › To be released: Ciena 5171 – Coherent 100G ports – 100G can’t be used over OSA FC until that’s available
- 5. Equipment options » Ciena 8700 › Layer 2 › 10 slot › RNEPs & regional aggregation where we can’t wait for the 5171 – 100G coherent DWDM 14/06/2019 The new Janet access infrastructure 5
- 6. 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
- 7. 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 14/06/2019 Tech 2 Tech: Future Services on Janet 7
- 8. 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 14/06/2019 The new Janet access infrastructure 8
- 9. What will this look like? 14/06/2019 The new Janet access infrastructure 9
- 10. 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
- 11. PoP to PoP PoP A PoP B Site 2Site 1 Site 3
- 12. 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
- 13. 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
- 14. 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.
- 15. 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
- 16. Presentation »Services delimited byVLANs › Or additional ports on the NTE »Services might be › IP › ExpressRoute › Netpath
- 17. 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.
- 18. Questions and discussion? 14/06/2019 The new Janet access infrastructure 18
Notas del editor
- 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.
- 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.
- 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.
- 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.
- 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.