Software Defined Networks

List of Figures

Number	Figure	Page
1.1	Typical data center network topology.	6
1.2	Roles of the control, management, and data planes.	8
1.3	A packet’s journey through switching hardware.	10
1.4	Control plane consternation in the switch.	14
1.5	Overhead of dynamic distributed route computation.	15
1.6	Centralized programming of forwarding tables.	16
2.1	Networking functionality migrating to hardware.	22
2.2	Example graph of a network for shortest-path calculation.	23
2.3	Server virtualization: creating a new VM instance.	30
2.4	Creating a new network instance in the old paradigm.	31
2.5	Multipath.	33
3.1	Early attempts at SDN: RADIUS.	42
3.2	Early attempts at SDN: orchestration.	43
3.3	Early attempts at SDN: plugins.	45