Provisioning Janet

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Provisioning JanetRob Evans, Chief network architect19/10/2016

Background picture is of Janet6 staging, nodes destined for Manchester18/10/20161Title of presentation (Insert > Header & Footer > Notes and Handouts > Header > Apply to all)

Where are we today?Janet6 in operation since 2013Transmission and IP layer both managed by Janet NOCNo hidden extras for additional capacityCurrently undergoing a mid-term upgradeCore links being increasedBackbone routers being replacedGreater 100GE densityExisting T4000 platform has no developmentIncrease in capacity to regions19/10/20162Campus network engineering for data intensive science

18/10/20162Title of presentation (Insert > Header & Footer > Notes and Handouts > Header > Apply to all)

The Janet6 backbone19/10/2016

TelehouseNorthTelehouseWest

LowdhamLeeds

EquinixHEXEquinixPGEquinixManchesterErdingtonGlasgow

BradleyStoke4x100GE2x100GE1x100GE

SharedDC, Slough

SharedDC, Leeds3Campus network engineering for data intensive science

Mention next steps in the mid-term upgrades here. 6x100 on the southern part of the core, 4x100 on the northern, 2x100 to Glasgow and Bristol18/10/20163Title of presentation (Insert > Header & Footer > Notes and Handouts > Header > Apply to all)

Weekly incoming traffic peaks

19/10/20164Campus network engineering for data intensive science

To use a more natural scale19/10/2016

5Campus network engineering for data intensive science

To meet this, the backbone bandwidth continues to grow.In the grand tradition of contrived metaphors18/10/20165Title of presentation (Insert > Header & Footer > Notes and Handouts > Header > Apply to all)

Plumbing the tubes34Mbit/s: 2.64 inches155Mbit/s: 5.64 inches622Mbit/s: 11.4 inches2.5Gbit/s: 1.9ft10Gbit/s: 3.8ft40Gbit/s: 7.6ft100Gbit/s: 12ft200Gbit/s: 17ft400Gbit/s: 24ft19/10/2016

400Gbit/s200Gbit/s100Gbit/s40Gbit/s

10Gbit/s

6Campus network engineering for data intensive science

If Janet were a sewer

Lee Tunnel, 24 feet in diameter.Photo Thames Water19/10/20167Campus network engineering for data intensive science

What is it all?Much of this is commodity IPTop graph: traffic between Janet and GEANTMost external R&E traffic (except dedicated ccts)One instance of an overlay well learn about later is LHCONEBottom graph: traffic between Janet and LHCONE

19/10/20168Campus network engineering for data intensive science

Definition of commodity IP is open to discussionHow do we know if traffic from Google is a cat video or a genome visualisation?One site in particular, who will probably make themselves known later on.18/10/20168Title of presentation (Insert > Header & Footer > Notes and Handouts > Header > Apply to all)

Thats just the backboneJanet6 ensured we installed transmission nodes into the RNEPsOr what used to be called RNEPsRegions still have a mix of fibre and leased linesHave tried to move towards fibre where we know theres a needAiming to rationalise the architecture between backbone and regions19/10/20169Campus network engineering for data intensive science

Site accessAim for access circuits to be contention-freeSometimes usage surprises usUpgrades have lead times, even if we have fibre to the doorAccount managers are the interface between Jisc and membersQoS is not a bag of worms that we want to open19/10/2016Campus network engineering for data intensive science10

Performance problemsAs far as the NOC is concerned just another form of network faultReport in the usual way via the Janet Service DeskRealising that some form of faults require more specialist knowledgeHence the end-to-end performance initiative19/10/201611Campus network engineering for data intensive science

OptionsCan we continue to scale?Related: can we afford to continue to scale?Is big data anything more than feeding the current exponential growth?Should we offload more traffic?Separate DTZ interfaces rather than sharing IP capacity?Should we encourage more off-peak data transfers?Notice the question marks topics to discuss!19/10/201612Campus network engineering for data intensive science

Affordability: most components are priced in US$Leading onto the next slide.18/10/201612Title of presentation (Insert > Header & Footer > Notes and Handouts > Header > Apply to all)

Flattening the demand curve?19/10/2016

Provision basedon thisThis is neverused13Campus network engineering for data intensive science

Where next?More flexible provisioning of end-to-end 10G pathsPrimary user of transmission layer was expected to be the Janet IP layerDid not forsee scale of requirement and expected them to be offloaded to Lightpaths / NetpathsOptical layer is designed for 40/100G+10G doesnt use spectrum efficiently

19/10/201614Campus network engineering for data intensive science

Where next?Could be done on the transmission layerOTNCould be done on an ethernet layerSDN, EoMPLSDoes capacity need to be guaranteed or just segregated?Smarter services rather than just bandwidth?On-net storage19/10/2016Campus network engineering for data intensive science15

Questions and discussionRob EvansChief network architect@internetplumberRob.Evans@jisc.ac.uk19/10/201616Campus network engineering for data intensive science

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