Rquesting An MPLS-TP Creation Review




Im ccing tsc mailing list to get a creation review.


We carefully searched for a common ground to collaborate with China Mobile.

But as far as I understand, it seems like our common ground is limited to the keyword "MPLS-TP" only.

Our goals and models are different from each other.

China Mobile focuses on applying the MPLS-TP (PTN) solution in their wireless backhaul network using OpenFlowTTP and Qx.

We are working on bringing Optical Transport Network (OTN) and MPLS-TP in core networks together by integrating legacy EMS/NMS platforms through common YANG models.

That means we are not currently working on OpenFlowTTP and Qx, nor have any concrete plans to work on them in the near future.


Originally, we intended to create a project called "Transport SDN" solution to incorporate OTN, MPLS-TP, and ROADM protocols.

To think big but start small, we ended up choosing the keyword MPLS-TP instead of T-SDN.

However, now that we have a keyword conflict with China Mobile, we are willing to change our keyword from MPLS-TP to Transport SDN solution.


In the future, I think we can benefit and collaborate with MPLS-TP Solution team on OpenFlowTTP, Qx, and Southbound drivers.

Also, we hope China Mobile could reference our project when they want to start working on OTN.

For now, we think it would be wiser to have separate projects.

We will look forward hearing your opinions on this.






From: Colin Dixon [mailto:colin@...]
Sent: Thursday, March 31, 2016 11:39 PM
To: Weiqiang Cheng
박세형; CANPTM8GUWD=vpATEgxkyHtjUyC8zoSCG-3=zmTyBDLETTOiunw@...; 박수명; 임창규; 신지수; Pradeeban Kathiravelu; George Zhao; Wang Lei; lihan; zhangtingtingyjy; liqin; project-proposals@...
Subject: Re:
: [OpenDaylight TSC] MPLS-TP creation review


I'm cc'ing project-proposals just so this gets logged somewhere.

It sounds like common areas here would be the MPLS-TP TTP and the MPLS-TP support for OF-CONFIG. Beyond that, it sounds like we have two different applications that would use those APIs. Is that right?




On Thu, Mar 31, 2016 at 5:33 AM, Weiqiang Cheng <chengweiqiang@China Mobile.com> wrote:

Dear Justin,

Thank you very much for your information about the MPLS-TP service project.


Base on your description, I think the requirements are different. You hope to base on the OTN baseline to support MPLS-TP.


China Mobile hope to use MPLS-TP as the basic solution for Packet transport network(PTN). We hope to use ODL to implement both super controller and domain controller. I also hope to details the overview of MPLS-TP solution.


The contribution will include:

- Yang Model with restconf solution for the interface between super controller and domain controller.

- Yang Mode and intent interface for the interface between Application and controller

- Openflow TTP with MPLS-TP extension

- OF-config with MPLS-TP extension


Currently, we have setup a test environments based on our prototype. More than 7 PTN equipment vendors including Huawei, Alcatel-Lucent, ZTE, Fiberhome, GWTT, Raisecom, Shanshui Optoelectronic… are involved in the test environments. And we also developed the MPLS-TP Openflow TTP which currently has been supported by several chip vendors such as Broadcom, PMC, Centec, and we are running the interoperation test in parallel.


The test result shows that the models and mechanism work well and China mobile planed to do field trial recently.


The willing committers are also increasing. The developers from Ericsson, GWTT, Raisecom, ZTE, Broadcom are planning to contribute to the project.



Weiqiang Cheng


发件人: 박세형 [mailto:labry@...]
发送时间: 2016329 9:28
收件人: CANPTM8GUWD=vpATEgxkyHtjUyC8zoSCG-3=zmTyBDLETTOiunw@...
抄送: Colin Dixon; 박수명; 임창규; 신지수; 박세형; kk.pradeeban@...; chengweiqiang@China Mobile.com; George.Y.Zhao@...
主题: [OpenDaylight TSC] MPLS-TP creation review




This is Justin from ETRI.

Thank you for giving us a chance to do a creation review as an email Q&A.

Most of the details of our project can be found at the following link.



However, let me briefly introduce you to the status of our solution.

MPLS-TP Service Team has put intensive efforts into this project and has almost finished the prototype controller and the plugins.

We received our requirements from local carriers (SKT and KT) and have successfully demonstrated the creation/deletion of multiple services over two different vendors (Woorinet and ETRI devices).

The Telefield (a local vendor) MPLS-TP devices are expected to be added to our compatible vendor's list after tiny adjustments.

We are willing to share our YANG models and controller source code, as well as one of Southbound plugins to ODL community.


<Figure 1: T-SDN Platform based on ODL>


Regarding collaboration, we want to know more about MPLS-TP Solution Teams project. We want to know which controller uses ODL, super, domain, or both? We also want to know if your super controller is equivalent to our super controller in the figure 1. I've looked at the architecture of MPLS-TP managers from MPLS-TP Solution Team, but the architecture seems very different from ours.

MPLS-TP Solution Team (China Mobile) seems like their main focus in on southbound drivers including Qx and OpenFlowTTP, whereas we are focusing on the northbound interface and using YANG models as a communication mechanism between the managers and the plugins. Currently, we are working on brownfield networks and bringing legacy devices into SDN realm, but we are not considering Qx nor OpenFlowTTP.


<Figure 2: T-SDN Platform>


To keep you informed, we are also working on OTN (Optical Transport Networking) over ODL, which will eventually evolve into a POTN solution, refer to figure 2.

The prototype OTN controller is almost ready, but we are still working on the internal details of OTN Southbound plugins and its counterpart EMS.

We are confident in saying that our prototypes (MPLS-TP and OTN controllers and plugins) prove that our approach is very promising. ODL has saved us enormous time and effort in bringing all these together.

We would welcome anyone who is willing to make contributions to our project or learn from us.

If you have any questions related to the project, I'd be glad to answer them..


       Project Dependencies




       Deliverable (Boron offset 1)

      Yang Models (MPLS-TP)

      MPLS-TP Controller (Serivce, Inventory, and Topology Managers)

      Southbound Plugin(s)

       Willing Committers (10+)

      ETRI: Justin Park, Jisoo Shin, Jin Won Kang, Chang-Gyu Lim, Soomyung Park (5)

      SKT:  Jongyoon Shin, Junhee Lee (2)

      Woorinet: Moonho Yoo (1)

      Mobigen: Moonkuk Park, Hyungcheol Park (2)

       Planning to migrate to Beryllium and beyond

       Project Lead Justin Park

       Document Contact Justin Park

       Test Contact Justin Park