Janet6: What it is, and what it isn t. Rob Evans Chief Network Architect, Janet

Transcription

1 Janet6: What it is, and what it isn t. Rob Evans Chief Network Architect, Janet

2 Janet background Backbone IP service managed by the Janet Network Operations Centre More on the transmission management later Regional networks Most managed autonomously by the regions themselves Some public service networks Accredited to carry other public sector traffic Mainly MPLS to segregate Janet traffic and Internet from private networks Connect to the backbone in two different places Most sites connect to regional networks Two management boundaries between Janet and the site Janet Regional Network Regional Network Site

3 What we had SuperJANET5 Contract signed October 3 rd, 006. Transmission system dedicated to us, but managed by Verizon Business Ciena CoreStream and 400 Latterly Nortel/Ciena 6500 for 40G SDH and 00GE on high-pmd fibres Juniper routers managed in-house Two routing platforms T series for IP» No MPLS! MX for EoMPLS, used for lightpaths End of contract October 3 rd, 03.

4 What we wanted Light the dark fibre ourselves Reduce complexity of asking Verizon Business to do something, then Verizon having to ask Ciena to do it Lots of contractual negotiations for anything new Scale under our control Lots of high-speed circuits Currently peaking at about 60Gbit/s of IP traffic from GEANT, peering and transit Still growing exponentially Ability to offer consistent set of services Bring management of regional networks in-house

5 What we got 6,500km of dark fibre Ciena 6500 transmission system 8 x 00GE circuits 60(ish) 0G circuits All coherent 0G carried over 40G muxponders No dispersion compensation 00GE uses SR0 optics Cheaper optics, but more expensive cabling Only use within a data centre Saved ~ M (~.M) across network Janet manages most regional networks Not all Regional network infrastructure not refreshed as part of this, but ongoing project

6 A picture is worth,000 words Aberdeen Fife & Tayside ClydeNET NIRAN Glasgow EaStMAN CANLMAN NNW YHMAN NorMAN Manchester Telecity KH Leeds AQL The TransPennine Arc Birmingham Erdington Nottingham Lowdham PSBA Bristol Bradley Stoke WMRN EMMAN South West EastERN South Telecity Powergate Telehouse West KPSN TVN Telecity Harbour Ex Telehouse North Core (Point of Presence) Regional network Transmission site

7 What we got Keeping two routing platforms Juniper T4000 for IP service Upgrade from T600 Sorta 00GE cost on T4000 is fraction of cost on T600 Introducing point-to-point circuits with uncommitted bandwidth Juniper MX for guaranteed bandwidth circuits Upgrade interconnects from 0GE to 00GE Can provision 0GE point to point circuits rapidly

8 What we didn t get OTN Switching Had considered it for some parts of the network Bandwidth drop at each point didn t need to be high Wasn t available on many smaller chassis Added cost We use the routing platform for building point-to-point circuits More flexible and dynamic Transponder-less DWDM system Router optics not there for long-haul 00G

9 Here is the second thousand East of Scotland Aberdeen Fife & Tayside ClydeNET NIRAN belf nl Glasgow glas vz edin sc EaStMAN 3 4 CANLMAN 4 NNW YHMAN 3 NorMAN HEAnet Manchester Telecity Kilburn House manc rh leed 4 lu leed lm TransPennine Arc 3 Global Transit Leeds AQL newc ct Birmingham Erdington Public & Private Peers Nottingham Lowdham PSBA 3 WMRN 3 Bristol Bradley Stoke empsn South West EMMAN TVN RAL 4 Telecity Powergate Telehouse West South KPSN 3 EastERN 3 Telecity Harbour Ex 00G GÉANT Telehouse North Global Transit Public & Private Peers External connectivity Core (Point of Presence) Regional network Elsewhere N 00Gbps channel Telehouse fibre N x 0Gbps channels

10 Some (technical) challenges Router power and cooling Wavelogic 3 Cards, shelf software and management software (OneControl under Linux) from Ciena were all new Do release dates ever slip? Odd timing problem on 00Gbit/s OCLD (line-side) cards Manifested as flapping links Required a firmware fix Underwater links to Ireland require lots of amplification 35km unamplified Co- and counter-pump Raman amplifiers Odd blip Pump amplifiers up to maximum Clean fibres No, I mean REALLY clean the fibres Never, ever, ever unplug this fibre again

11 Future looks Where now? Transmission capacity to scale for some time Router density is a concern Space and power for multiple chassis is difficult

12 Comments? Questions? Janet, Lumen House Library Avenue, Harwell Oxford Didcot, Oxfordshire t: +44 (0) f: +44 (0) e: