1. Use cases for implementation of the NSI interface Takahiro Miyamoto, Nobutaka Matsumoto KDDI R&D Laboratories Inc. This work is partially supported by NICT (National Institute of Information and Communications Technology), Japan.

2. 2 Abstract The goal of this presentation is to contribute contents of section 12 in the architecture recommendation document. Agenda Single layer networks Multi-layer technology with multiplexing Recursive NS agents

3. 3 Section 12 in recommendation document Sections 12 Examples and use cases 12.1 GMPLS intradomain with NS agents 12.2 Single layer networks 12.3 Multi-layer technology networks 12.4 Multi-layer technology with multiplexing 12.5 Recursive NS agents Contents Overview of a use case application Target network layer Sequence to use NSI by the application Functional / Non-functional requirements of the application

4. 4 Requirements Functional Requirements Provisioning Layer: L1 (lambda) / L2 (Ethernet) / L3 (IP) Topology: P2P / P2MP / MP2MP Scheduling: on demand / advanced reservation Messaging: 1 phase commit / 2 phase commit Monitoring: mandatory / optional Non-functional Requirements Spec Bandwidth Latency Jitter Fault handling: none / N+1 redundancy / … Security

5. 5 Single layer networks Application: Data transfer Overview: To transfer data under stable network, a network path between a client and server is provisioned. The network path may be coallocated with computing resources. Layer: L1 or L2 e.g. eVLBIe.g. Visualization Dynamically provisioningStatically provisioning

6. 6 Single layer networks UA#1App NSA#1 Find a data server where required data is stored Call NSI Request data request data download Call NSI Release Established

7. 7 Single layer networks Functional Requirements Provisioning Layer: L1, L2 Topology: P2P Scheduling: on demand, advanced reservation Messaging: 1 phase commit, 2 phase commit Monitoring: mandatory Non-functional Requirements Spec Bandwidth: wide Latency: low ~ Jitter: low ~ Fault handling: N+1 redundancy Security:

8. 8 Multi-layer technology with multiplexing Application: VoIP Overview: To ensure end-to-end bandwidth and jitter, a telecom carrier will provide a guaranteed network path. In general, a telecom carriers network consists of access / metro network (layer 2 network) and core network (layer 3 network). Moreover, in the metro / core network, traffic of users will be aggregated into a network path. Layer: L2 & L3 (multiplexed) This use case was presented at NSI-WG in OGF24.

9. 9 Multi-layer technology with multiplexing UA#1SIP server VoIP client SIP signaling Find the destination client Call NSI Request Calling Established SIP signaling NSA#2NSA#1NSA#3 Call NSI Release SIP session

10. 10 Multi-layer technology with multiplexing Functional Requirements Provisioning Layer: L2, L3 Topology: P2P Scheduling: on demand Messaging: 2 phase commit Monitoring: mandatory Non-functional Requirements Spec Bandwidth: narrow Latency: low Jitter: low Fault handling: N+1 redundancy Security:

11. 11 Recursive NS agents Application: Overlay network, Cloud networking Overview: A network service agent provides underlay network connectivity. Another network service agent provides overlay network connectivity. Layer: L1, L2 & L3 NS#2 provides L2-NW over NS#1s network. NS#1 provides L1-NW.

12. 12 Recursive NS agents NSA#2 NSA#1UA#2 UA#1App Request Call NSI Overlay network is established. Release Call NSI

13. 13 Recursive NS agents Functional Requirements Provisioning Layer: L1, L2, L3 Topology: P2P, P2MP, MP2MP Scheduling: on demand, advanced reservation Messaging: 1 phase commit, 2 phase commit Monitoring: optional Non-functional Requirements Spec Bandwidth: narrow ~ wide Latency: low ~ Jitter: low ~ Fault handling: N+1 Redundancy (NS#1) Security: