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Networks & Data Centres
A very brief introductionITSS Induction MT 2016
Henryk Glogowski
Head of Networks & Data Centres
IT ServicesSeptember 2016
(V1.0.0)
Outline
• Networks – an overview• University Network
• Wireless in the University
• Data Centre Service
• The Teams: • Who are we? Contacting us.
• What do we do? A few key services.
• For Reference
• Appendix 1: What is Janet?
• Appendix 2: What is ?
• Appendix 3: Network transmission times
• Note: Slides & URLs on these slides are for your future ref - if you choose to download them!
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University Network A few facts and figures
~~100,000 user ‘devices’
276 FroDo’s & UPS’s (04/16)
~200 SAM’s & UPS’s (Secure Network VoIP+BMS)
>300km external optical cable
>1,500 WAP’s registered on COWLS
17,011,174 emails delivered/week (peak)
Average 6.3 million/week, over last 12 months
658,791,916 emails rejected/week (peak) (last 12 months) Source
Average ~33 million/week, over last 12 months
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University of Oxford’s Wide Area Network From “OUCS in 2010“ (p8)
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You are here
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Odin Service Definition
Baseline service (centrally funded):
2 Gbps
Single FroDo
2 uplinks to the Core
• Bandwidth Options:
• 10Gbps (set up charge, annual charge)
• 40Gbps (set up charge, annual charge, business case required)
• Additional Resilience:
• Dual FroDos (set up charge, annual charge)
• Requirement for additional cabling, firewalls &/or switches, etc.
• New features eg IPv6, real-time traffic, ...
• ~98% of all cases
For full details: Odin SLD & Tech Info
Wireless Networking for ITSS
Services
•
• For more see Appendix 2 of this presentation
• OWL
• OWL Visitor
• Public Access (The Cloud)
• Service delivery• Self-managed
• Centrally-managed OWL service (COWLS)
• aka “OUCS-managed” or “OWL Phase 2”
• Max of FOUR SSIDs: OWL, eduroam, ‘public’ (“The_Cloud”) & one local SSID.
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University Shared Data Centre (USDC)
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Cold Aisle Secure access
Why might it interest you?1. Resilience: independent power feeds from independent transformers,
dual UPS systems and N+1 environmental units.
2. Secure: biometric systems, 360 degree CCTV and an anti-tailgating
entrance portal, all with full access audit trails.
3. Green: standard small server room PUE ~2.5 vs USDC PUE ~1.4
4. Self Service: Online interfaces allow full access to data centre and
private cloud resources as if they were sat on the desk.
5. Cost Saving
My personal views:
1. No more 'nasty, little rooms'
2. No need to develop & maintain expertise in UPS, Air-Con, racking,
security, cabling …
3. One less set of supply & maintenance contracts to manage
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Key Projects
•TONE [Odin & Bifrost]
•Data Centre Service:
• USDC upgrade &
• New DC
•GOWN [‘paused’]
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Data Centre Service–Proposals
USDC (Phase 2)
• Racks: 45Ux1.2(d)x 600(w)
• ≤7kW/rack max
• Cooling by ‘chimneys’
• All Overhead feeds.
• A & B power bus bars
EDC
• Third-party DC (CoLo)
• Looking for somewhere within a ~2 hour drive
• Matches/exceeds USDC
• Has HPC provision
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Networks & Data Centres Group
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Head of Networks & Data Centres (NDC)
Henryk Glogowski
Network Operations (NetOps)
Alistair James
Network Support & Development (NSD)
Andy Saunders
Data Centre Manager
David Birds
Networks’ Contact details
Single point of contact for
ALL NETWORK queries/requests
etc:
Emergencies (office hours ONLY):
x(2)73268
Out of hours: NorMAN (01865 6) 123451528/09/2016
Network Operations (NetOps)
• ‘Tier 1’ network helpdesk for University IT Support Staff.
• “Triage” of ALL initial requests to [email protected]
• Monitoring and first line response to alerts on network
systems and services: 79,729 ‘items’ (as of 15/09/16).
• First line maintenance for:
• University core network.• FroDo’s, SAMs + associated UPS’s.• Centrally managed Oxford Wireless LAN Service (COWLS)• UAS network (~5,000 devices)• VoIP edge network
• Network Hardware Support scheme
• http://help.it.ox.ac.uk/network/lan/index
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Network Support & Development (NSD)
• Tier 2 network support.• University Backbone Network
• Oxford Wireless LAN (OWL) and eduroam
• Data Centre networks• Secure network–Building Management System and VoIP networks• External links – mostly Janet.• NTP• DNS• DHCP• Remote Access/VPN• FroDo & SAM (design & management)• Mail Relay & Message Submission (Oxmail) services
• Useful links:• https://comms.oucs.ox.ac.uk/index
• http://help.it.ox.ac.uk/network/index
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University Shared Data Centre (USDC)Contact details
• For enquiries:• David Birds (x73273)
• E-mail: [email protected]
• For problems:• E-mail: [email protected]
• For more info• Co-location Services
• Private Cloud
• NSMS
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Thank you for your time and attention.
Any questions?
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Appendix 1: What is the Jisc network(aka ‘Janet’)?• “Janet is a high-speed network for the UK research & education community. A
connection to Janet gives you an extremely reliable & high bandwidth network that will support innovation, research & learning at your institution.”
Key Facts
• Janet serves over 18 million end users
• The network covers the whole of the UK.
• Janet has over 5,000 km of optical fibre
• The backbone runs at 100Gbit/s (with an interconnect capacity of around 40Gbit/s)
Key services
• High-bandwidth access to other HEI’s & the Internet
• eduroam
• Janet Certificate Service
• Computer Security & Incident Response Team (CSIRT)
• Network Time Service (NTP)
• See: https://www.jisc.ac.uk/janet
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Janet6 Backbone and Regional Networks
TVN
https://www.ja.net/products-services/janet-futures/janet6
eduroam (education roaming)
• Users: researchers, teachers, students & staff
• Access to the Internet in any eduroam-enabled institution.
• “… eduroam … is based on the fact that the user's
authentication is done by the user's home institution ...”
• >6,000 WiFi Hotspots worldwide
• http://www.eduroam.org/
Note: if you/your users require an Oxford IP address on
eduroam (or OWL)
• Use the IT Services’ VPN Service
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Appendix 2: What is
Where is
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eduroam Companion app for Android & iOS: “… helps users to locate their nearest eduroam point…” https://www.ja.net/products-services/janet-connect/eduroam/eduroam-companion
Locally:• University
• Hospitals
Nationally:• >275 UK sites
Internationally:• 76 countries (as of
18/05/16)
• >6,000 locations
What’s in it for you?
• You only support your own users!
• ‘Guests’ are supported by their home
institution
• “One stop shop”: configure a laptop or
mobile with only one SSID for any Institution
that has eduroam
• Eduroam CAT (Configuration Assistance
Tool)
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Appendix 3: Network transmission times
1Gbps 10Gbps 40Gbps 100Gbps 400Gbps 1Tbps
1T Byte 133.33 13.33 3.33 1.33 0.33 0.13
1P Byte 133,333.33 13,333.33 3,333.33 1,333.33 333.33 133.33
1E Byte 1.33E+08 1.33E+073.33E+0
6
1.33E+0
63.33E+05 1.33E+05
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• Times are in minutes eg 1TByte takes ~13.3 minutes over a 10Gbps link
• Caveat: These figures assume 100% efficiency!
• Data in BYTES and transmission rates in bits.
• For more details see: https://wiki.it.ox.ac.uk/itss/DataXmssnRates
