tree: e56874bcc296f4743ce3f9dff216629f0d61432f [path history] [tgz]
  1. .gitignore
  2. Makefile
  3. README.md
  4. SUMMARY.md
  5. Service.png
  6. ServiceChain.png
  7. auto-configuration.png
  8. book.json
  9. contribute_docs.md
  10. core_models.md
  11. dev/
  12. examples.md
  13. install.md
  14. intro.md
  15. mdl_relaxed.rb
  16. mdl_strict.rb
  17. migrate_4.0.md
  18. modeling_conventions.md
  19. modules/
  20. platform.md
  21. repo.md
  22. scripts/
  23. security_policies.md
  24. static/
  25. swagger/
  26. tutorials/
  27. use.md
  28. use_case.md
  29. venv-xosdocs.sh
  30. vtn-xos.jpeg
  31. xos_internals.md
  32. xos_vtn.md
docs/README.md

XOS Overview

XOS provides a framework for operationalizing a collection of disaggregated components. More specifically, XOS defines an Extensible Service Control Plane that provides value in two ways:

  • It serves as a single unifying OAM interface to a collection of backend services, avoiding the operational silos that otherwise result from disaggregation. This includes a framework for creating and operating on services across organizational boundaries, across a range of implementation choices, and across multiple tenants.

  • It manages end-to-end service chains across a service mesh, supporting visibility and control at the granularity of individual subscribers or flows. This provides a fine-grain means to correlate diagnostic and monitoring information, allocate resources and isolate performance, and distribute/migrate functionality.

XOS is currently being used in three projects:

  • CORD Controller: XOS is a central part of CORD (Central Office Re-architected as a Datacenter), providing a coherent service control plane that runs on on top of a mix of disaggregated access technologies, legacy VNFs running in OpenStack VMs, horizontally scalable micro-services running in Kubernetes, and SDN control applications running on ONOS.

  • Network Edge Mediator (NEM): XOS is being used to provide a mediation layer for SEBA (Software-Enabled Broadband Access), addressing the challenge of how to integrate an edge sites with different (and potentially multiple) global orchestrators and legacy OSS/BSS.

  • End-to-End Service Chains in a Multi-Cloud: XOS is being used to manage end-to-end service chains that span customer premises, operator edge sites, Internet exchanges, and commodity clouds.

For additional white papers describing XOS, see the project wiki page.