Sumários
Aula 24
3 Dezembro 2020, 19:30 • Rita Sousa
Seminário sobre SDN apresentado pelo Eng. José Palma da Altice Portugal (continuação).
Aula 23
3 Dezembro 2020, 18:00 • Rita Sousa
Seminário sobre SDN apresentado pelo Eng. José Palma da Altice Portugal.
Aula 22
26 Novembro 2020, 19:30 • Rita Sousa
The current laboratorial lecture aims to fulfill the next learning goals: i) experiment some given python code that deploys a specific topology connecting three switches via a triangular topology, using the Mininet Python API; ii) experiment a given SDN Ryu Application that implements, namely, the mechanism already discussed in the last Theoretical lecture, designated as "Network Monitoring via OpenFlow (OF) & Group Table Reconfiguration"; and iii) evaluate previous code in some practical scenarios associated with QoS rate metric fulfillment and network operation robustness against switch port failure.
Aula 21
26 Novembro 2020, 18:00 • Rita Sousa
OpenFlow Group Tables. Python Package Networkx. Protocols for Network Monitoring. Network Monitoring via OF & Group Table Reconfiguration. Mininet customized topology - Python API. Import Python Library to Topology Script. Mininet Constructor. Mininet.addController () Function. Mininet Remainder Python Script Code. Current Proposal to enhance egresss rate. Future work to model QoS metrics. Future work to enhance egress rate. Next Laboratory.
Aula 20
19 Novembro 2020, 19:30 • Rita Sousa
The current laboratorial lecture taught how to write a Ryu application that supports scenarios with multiple SDN controllers. There are three possible functional roles for each SDN controller forming the cluster of the diverse SDN controllers. The three possible SDN controller roles are MASTER, SLAVE, or EQUAL. This lecture aims to deliver to its practitioners relevant knowledge in the next aspects: i) study the two possible and exclusive switch reactions for the case the communication with the control plane has failed; ii) show how each SDN controller is configured for its role within the control cluster; iii) evidence how the control cluster formed by distinct SDN controllers gives more strong guarantees against a SDN controller failure at the control plane; iv) study how the cluster SDN controllers divide among them the control responsibility of the diverse nodes of the data plane; and v) study how the SDN controllers forming the control cluster and, using the OpenFlow v1.3 protocol interact with the network devices (i.e. OVS switches) to deploy diverse multi-controller scenarios.