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gerrit.opencord.org / voltha-go / 820197cd6aa714dc34d2b3278d138fdfa884eb77
commit820197cd6aa714dc34d2b3278d138fdfa884eb77[log] [tgz]
authorkhenaidoo <knursimu@ciena.com>Thu Feb 13 16:35:33 2020 -0500
committerkhenaidoo <knursimu@ciena.com>Fri Feb 14 14:06:25 2020 -0500
tree527abb866e97771baaa746fe46fd408a3c9576e0
parent16ce36a1d659ee84982d81399ef9bf0a4f015b1e [diff]
[VOL-2576] Improve route calculation

This commit changes the way device routes are calculated. It
replaces the device graph method. The graph method relies on the
shortest path calculation which is quite resource intensive. For
instance, generating the routes for a PON network with 1 OLT having
8 PON ports, 64 ONUs per Port and 4 UNIs per ONUs took 96 secs to
generate the 4096 routes.  The new method creates the routes from
the devices data with no middle step.  Generating routes for the
above topology now takes 4ms.

Change-Id: I32bffe06d12ad0fea94002a39f217547dc55cdbf
23 files changed
tree: 527abb866e97771baaa746fe46fd408a3c9576e0
  1. .gitignore
  2. .gitreview
  3. .golangci.yml
  4. BUILD.md
  5. CODE_OF_CONDUCT.md
  6. Makefile
  7. README.md
  8. VERSION
  9. common/
  10. compose/
  11. db/
  12. docker/
  13. go.mod
  14. go.sum
  15. quickstart.md
  16. rw_core/
  17. tests/
  18. vendor/
README.md

VOLTHA

What is Voltha?

Voltha aims to provide a layer of abstraction on top of legacy and next generation access network equipment for the purpose of control and management. Its initial focus is on PON (GPON, EPON, NG PON 2), but it aims to go beyond to eventually cover other access technologies (xDSL, Docsis, G.FAST, dedicated Ethernet, fixed wireless).

Key concepts of Voltha:

  • Network as a Switch: It makes a set of connected access network devices to look like a(n abstract) programmable flow device, a L2/L3/L4 switch. Examples:
    • PON as a Switch
    • PON + access backhaul as a Switch
    • xDSL service as a Switch
  • Evolution to virtualization: it can work with a variety of (access) network technologies and devices, including legacy, fully virtualized (in the sense of separation of hardware and software), and in between. Voltha can run on a decice, on general purpose servers in the central office, or in data centers.
  • Unified OAM abstraction: it provides unified, vendor- and technology agnostic handling of device management tasks, such as service lifecycle, device lifecycle (including discovery, upgrade), system monitoring, alarms, troubleshooting, security, etc.
  • Cloud/DevOps bridge to modernization: it does all above while also treating the abstracted network functions as software services manageable much like other software components in the cloud, i.e., containers.

Why Voltha?

Control and management in the access network space is a mess. Each access technology brings its own bag of protocols, and on top of that vendors have their own interpretation/extension of the same standards. Compounding the problem is that these vendor- and technology specific differences ooze way up into the centralized OSS systems of the service provider, creating a lot of inefficiencies.

Ideally, all vendor equipment for the same access technology should provide an identical interface for control and management. Moreover, there shall be much higher synergies across technologies. While we wait for vendors to unite, Voltha provides an increment to that direction, by confining the differences to the locality of access and hiding them from the upper layers of the OSS stack.

How can you work with Voltha?

You can start by reading the published documentation.
Another great way is to check out the BUILD.md file to see how you can build it, run it, test it, etc.

How can you help?

Contributions, small and large, are welcome. Minor contributions and bug fixes are always welcome in form of pull requests. For larger work, the best is to check in with the existing developers to see where help is most needed and to make sure your solution is compatible with the general philosophy of Voltha. Please check out the contributing page on the documentation.