(CTTC) Implement Service Handler for L3 services using ACTN SBI driver

Proposers

• Lluis Gifre (CTTC)
• Ricard Vilalta (CTTC)
• Raul Muñoz (CTTC)

Description

Implement a basic Service Handler for L3 services using ACTN SBI driver compatible with ACTN IETF RFC drafts "A YANG Data Model for Transport Network Client Signals" [1] and "A YANG Data Model for Traffic Engineering Tunnels, Label Switched Paths and Interfaces" [2]. Implement also extensions in associated components.

Demo or definition of done

Demonstration ETSI F5G PoC CAMARA [3].

References

1. H. Zheng, A. Guo, I. Busi, A. Snitser, F. Lazzeri, Y. Xu, Y. Zhao, X. Liu, G. Fioccola, C. Yu, "A YANG Data Model for Transport Network Client Signals," IETF draft-ietf-ccamp-client-signal-yang-10, October 2023
2. T. Saad, R. Gandhi, X. Liu, V. P. Beeram, I. Bryskin, "A YANG Data Model for Traffic Engineering Tunnels, Label Switched Paths and Interfaces," IETF draft-ietf-teas-yang-te-34, October 2023
3. ETSI F5G PoC CAMARA (private document)

Enhancement Design

Clarifications to Expected Behavior Changes

PathComp should be able to manage device-endpoint settings with VLANs and static routing rules, and propagate them appropriately to sub-services.

Assumptions

None

Impacted Components

List of impacted components: Common framework, Device, Service, PathComp, NBI, WebUI, Tests.

Common framework Impact

• Descriptor Loader: extended to split devices in controllers and devices, and load first the controllers, and then the devices. Otherwise, it crashes due to missing controller for some manually-added devices.
• Tools > GRPC > Constraints: added parameter to specify new constraint action while copying/updating constraints.
• DeviceTypes: added IP SDN Controller (real and emulated)

Device Impact

• Updated DeviceServiceHandler::AddDevice() method to detect and keep controller-id while onboarding a device that specifies an explicit controller device identifier.
• Updated IETF ACTN driver to automatically create, by default, its mgmt endpoint.
• Updated IETF ACTN driver unitary tests

NBI Impact

• IETF L3VPN connector:
  • Re-organized data files.
  • Added logic to discover, when available, the address of the neighbor endpoint of a specified L3VPN endpoint. That is needed to properly configure static routing in some cases.
  • Replaced /device/endpoint/vlan/settings config rules by /device/endpoint/settings in Services. Otherwise, Service Handler might not easily detect the associated VLAN for a new connectivity service.
• IETF Network:
  • Added device ignore for IP SDN controllers

PathComp - Frontend Impact

• ComposeConfigRules:
  • Extended to manage /device/endpoint/vlan/settings in Services.
  • Deactivated some default L2NM/L3NM settings that are not needed.
  • Generalized logic to manage and extrapolate config rules.
  • Added logic to generate configuration rules to configure neighbor endpoint addresses and VLAN tags.
• ComputeSubServices:
  • Added logic to extrapolate an explicit service for devices managed by an intermediate SDN controller.
• ResourceGroups and ServiceTypes:
  • Added support for IP SDN controllers
• _Algorithm API:
  • Added logic to trigger generation of neighbor endpoint configurations

Service Impact

• First functional version of the L3nmIetfActn Service Handler.
  • NOTE: it contains some hardcodings to be elaborated and made dynamic with future use cases.
• Updated requirements.in

WebUI Impact

• Renamed icons laptop and emu-laptop to client and emu-client.
• Added icons for ip-sdn-controller and emu-ip-sdn-controller.

Tests Impact

• Tests > Tools > MockIetfActnSdnCtrl: updated base path to /restconf/v2/data.
• Added new test F5G POC CAMARA in: src/tests/f5g-poc-camara

Testing

See definition of done. A standalone test can be done following instructions in: src/tests/f5g-poc-camara/POC-CAMARA-Guide.md