A.A. 2019-20
IMPORTANT INFORMATION
Course start will be postponed due to teaching activities suspension.Please check this website and subscribe to the course at: Subscription to Cloud and Datacenter course to be informed about course news.
NOTICE: Due to the measures imposed by the government, the course will be initially taught through the Microsoft Teams platform. Students are invited to install the application following the instructions provided (in Italian) here:
http://softwaresso.unina.it/teams/
and using their own UNINA credentials to access the platform.
Lessons will be accessible through Microsoft Teams from March 17, 2020 and will be scheduled according to the official timetable.
Lessons will be accessible through Microsoft Teams from March 17, 2020 and will be scheduled according to the official timetable.
| Lesson no. | Date | Slides / References | Topics |
| 1 | 17/03/2020 | Course introduction. Datacenter architecture and organization. Rack layout. Cabling. TIA-942 Standard. Air conditioning and cooling plant. Power. Energy efficiency of a datacenter. Power Usage Effectiveness. Datacenter Tiers (UpTime Institute classification). Modular datacenters. Small-scale sample datacenter layouts. |
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| 2 | 24/03/2020 | Ethernet switching basic concepts. Datacenter networking infrastructure. Access layer and aggregation layer. Access layer: ToR and EoR organizations. Bandwidth aggregation techniques. IEEE 802.3ad Link Aggregation. IEEE 802.1ax Link Aggregation Protocol LACP. |
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| 3 | 31/03/2020 |
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Switching theory fundamentals. Head-of-Line blocking. Clos networks. Clos theorem. Loop management in Ethernet networks. STP protocol. Datacenter networks: aggregation layer. Datacenter network infrastructure evolution. |
| 4 | 07/04/2020 |
Fat-tree topology. Leaf-spine topology. |
Some examples of large scale datacenter networks. Fat-tree: a scalable, commodity data center network architecture. Transparent Interconnection of Lots of Links (TRILL) and its use in datacenter networks. Multiple path routing in datacenter networks. Equal cost multi-path (ECMP). Improving ECMP load balancing with Flowlets (FLARE). VLANs. VLAN trunking. Inter-VLAN routing. Multi-layer switches and Virtual Switch Interfaces. (see slides lesson no.2) Virtualization technologies and their use in modern datacenters. A Linux-based hypervisor: KVM. |
| 5 | 21/04/2020 |
Virtual switches in type-1 and type-2 hypervisors. VM networking in a Linux based host. Macvlan. Linux Bridge. Open vSwitch. Hardware support to virtualization in modern NICs: SR-IOV. Virtual networking in multitenant cloud datacenters. IEEE 802.1ad (Q-in-Q). MPLS. VXLAN. NVGRE. Virtual eXtensible Local Area Network (VXLAN): A Framework for Overlaying Virtualized Layer 2 Networks over Layer 3 Networks. |
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| 6 | 28/04/2020 |
Storage technologies for datacenters: DAS, NAS and SAN. Fibre Channel. Network convergence. iSCSI. Fiber Channel over Ethernet (FCoE). Cloud computing. Cloud service models: IaaS, PaaS, SaaS. Introduction to AWS Cloud services. |
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| 7 | 05/05/2020 |
AWS EC2 and S3 public IaaS services. An introduction to OpenStack. OpenStack core services. A practical tour in OpenStack through its dashboard. OpenStack dashboard and CLI commands. |
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| 8 | 12/05/2020 |
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Software Defined Networking: concept, vision and applications. Introduction to OpenFlow. |
| 9 | 19/05/2020 |
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OpenFlow: flow table, pipelining of flow tables, group table. OpenFlow networks: proactive vs reactive control. OpenFlow controllers. An introduction to the Mininet network emulator. Open vSwitch as an OpenFlow switch. |
| 10 | 26/05/2020 |
An OpenFlow tutorial with Mininet. Use of Mininet in combination with the Ryu controller. Seminar (Ing. Gaia Ambrosino): Introduction to Intent Based Networking and to the Edge Computing paradigm. |
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| 11 | 03/06/2020 |
More details on Ryu. SSD disks for datacenter servers (see updated slides for lesson #6). TCP performance problems in datacenter networks. TCP Incast. Datacenter-specific TCP variants: DCTCP. |
