Active Content Networking (ACN)

1. Active Content Networking(ACN) Tal Lavian

2. Goals • Active Networks in Content Networking • Capsules used for service setup and network control • Content transport using normal IP protocols • CO2 EE processes capsules for • Service setup and network configuration • Content duplication for multi-receivers • Receive registration • Duplicate a content copy to each receiver Active Content Networking

3. What’s distinguished? • ACN vs RSVP and multicast • RSVP/Multicast: Requiring support on each router/switch • ACN: only at edge route/switch, service-enabling • ACN vs RTP and RTCP • RTP/RTCP: communication btw senders and receivers • ACN: communication also with network • ACN vs Active Networks (AN) • AN: capsules for network control and data transport, processing at every active node • ACN: capsules only for network control, and only processing at a few edge nodes Active Content Networking

4. Code & Policy Management Services Control Plane Data Transport iSD ACN Edge Node Control Net Network Management Code & Policy CO2 Services Control Plane Data transport Edge Device Node Components Node Structure Active Content Networking

5. CO2 Metro iSD CO2 Edge iSD CO2 Edge iSD CO2 LH iSD ACN and the Internet CO2 Distribution Plane Policy & Code NetMgr Optical Core Metro & Long Haul Access Access Access Capsule flow (control) Content flow (data) Service code & policy Network config/monitor Content Clients Content Server Active Content Networking

6. Issues • CO2 Distribution Plane • Capsule-based Control flow • Content Data flow • Control and Data flows: in- or off-band • Benefits • Shortcomings Active Content Networking

7. CO2 Distribution Plane • CO2 nodes • Locate at the network edges where necessary • Types: Edge, Metro, LH • CO2-Edge processes capsules, and • Decides service setup and network configuration • Instructs CO2-Metro/-LH to establish optical connections • Code & Policy • Code: capsule processors and network services • Policy: service and network constraints • NetMgr • Service control and network management Active Content Networking

8. Capsule-based Control Flow • Capsule: ANEP-based active packets • Purposes: • User signaling • Content service setup: enabling/disabling, etc • Network configuration: bandwidth, routes • Feedbacks btw senders and receivers • Service requests and grants/permission • Traffic statistics, and QoS • Processing at CO2-Edge • Downloading processor code Active Content Networking

9. Content Data Flow • Based on normal IP protocols • Like UDP/RTP • No capsule is required • Content Duplication by CO2-Edge • When more than one receiver exists • Why? Traffic congestion is most often here! Active Content Networking

10. Content Control and Data Flows • One connection: in-band • Under same UDP encapsulation • Resource saving • Capsule and Data have different payloads • But complex payload processing • But data transport may have to wait • Two connections: off-band • One for capsule and one for data • Separated communications • Network can be set up before data traffic starts Active Content Networking

11. Benefits • Easy content service setup • “On-the-fly” by capsules • Based on CO2 • Fewer capsules and their processing • At CO2 edge node only • Little interference with data path • Technology integration • Network signaling, like RSVP • Data transport, like RTP • Traffic feedback, like RTCP • Content duplication, like multicast Active Content Networking

12. Shortcomings • Specific hardware support • Capsule redirection • Content filtering • Content duplicating • Inter-node CO2 communication Active Content Networking