FYI - the liaison has been posted to IETF Statements
<https://datatracker.ietf.org/liaison/>.
https://datatracker.ietf.org/liaison/1850/
On 7/24/23 5:26 PM, David Sinicrope wrote:
Thanks Adrian. I wasn't aware of CCAMPs interest in broadband access
ONU equipment management, but as it is management of optical network
elements they should be aware.
Dave
On 7/24/23 5:22 PM, Adrian Farrel wrote:
Please copy CCAMP into these discussions as the WG actively writing
YANG models for optical elements in the network.
Cheers,
Adrian
*From:*netmod <[email protected]> *On Behalf Of *David Sinicrope
*Sent:* 24 July 2023 22:11
*To:* [email protected]
*Cc:* [email protected]
*Subject:* [netmod] Broadband Forum Liaison concerning: New Project
for Addressing ONU Management at Scale
Hi All,
As noted during the NETMOD session today, the BBF has sent a liaison
regarding their new project for Addressing ONU Management at Scale.
While not yet posted to IETF Statements
<https://datatracker.ietf.org/liaison/>, the liaison has the content
below and as noted in the meeting today, should have a response.
In the coming days, I'll be drafting the response on behalf of the
Chairs. Input is welcome.
Please let me know if you have questions
Thanks,
Dave Sinicrope
IETF Liaison Manager for the Broadband Forum
From the Chair's slides:
Liaisons and Communications
Incoming:
– From:Broadband Forum
– Received: 2023-03-09
– Title: New Project for Addressing ONU Management at Scale
– The Broadband Forum Fiber Access Networks (FAN) Work Area recently
agreed to initiate a new project for the optimization of management of
Optical Network Units (ONU) at scale. This project, called WT-505: ONU
Management at Scale, is intended to be an enhancement of the existing
specification, TR-385: ITU-T xPON YANG Modules. The following describes
the issues and considerations that led to the need for the new project.
– See list for attachment
Liaison content:
*Broadband Forum Liaison To: *
Kent Watsen, IETF NETMOD WG Co-Chair, <[email protected]>
<mailto:[email protected]>
Lou Berger, IETF NETMOD WG Co-Chair, <[email protected]>
<mailto:[email protected]>
Scott Mansfield, ITU-T Q14/15 Rapporteur,
<[email protected]> <mailto:[email protected]>
Liping Chen, ITU-T Q14/15 Associate Rapporteur, <[email protected]>
<mailto:[email protected]>
Paul Nikolich, IEEE 802 Chair, <[email protected]>
<mailto:[email protected]>
Glenn Parsons, IEEE 802.1 Chair, <[email protected]>
<mailto:[email protected]>
Jessy Rouyer, IEEE 802.1 Vice Chair, <[email protected]>
<mailto:[email protected]>
David Law, IEEE 802.3 Chair, <[email protected]> <mailto:[email protected]>
Adam Healey, IEEE 802.3 Vice Chair, <[email protected]>
<mailto:[email protected]>
*From:*
Lincoln Lavoie
Broadband Forum Technical Committee Chair <[email protected]>
<mailto:[email protected]>
*Liaison Communicated* *By:*
Ken Ko
Broadband Forum Managing Director <[email protected]>
<mailto:[email protected]>
*Date:* 8^th June 2023
*Subject:* For Information: New Project for Addressing ONU Management
at Scale
The Broadband Forum Fiber Access Networks (FAN) Work Area recently
agreed to initiate a new project for the optimization of management
of Optical Network Units (ONU) at scale. This project, called WT-505:
ONU Management at Scale, is intended to be an enhancement of the
existing specification, TR-385: ITU-T xPON YANG Modules. The
following describes the issues and considerations that led to the
need for the new project.
In contrast to many other transport technologies, a single PON
interface can multiplex as many as 128 ONUs. It is also typical for a
single Optical Line Termination (OLT) to contain many such PON
interfaces.
At this level of dimensioning, the OLT YANG modeled configuration
data becomes very large due to the high number of ONUs to be managed.
With current TR-385 and TR-383 Broadband Forum YANG models, the
management of large OLTs suffers severe performance degradation.
Examples of such degradation are:
·Time to validate YANG constraints when configuring ONU data nodes
(e.g., due to very large OLT interface and hardware component lists)
·Time to delete an ONU (time to retrieve all data nodes of the ONU)
·Time to perform a <copy-config> of a full OLT configuration.
Many Broadband Forum contributions have been submitted and discussed
that demonstrate ONU management needs to be optimized to keep the OLT
manageable. It has been determined that efficient optimization of ONU
management requires the following measures:
·Collocate ONU data nodes per ONU, rather than have them interleaved
with OLT data nodes (e.g., in the same interface or hardware
component list) as per TR-385. This involves defining a list of ONUs
in the OLT where each ONU entry contains all ONU data nodes.
·Bring a strong reduction of the configuration data size per ONU.
This will be achieved using ONU templates combined with the use of
shared ONU profiles.
IETF schema mount was considered as a solution for collocating ONU
data nodes. There were drawbacks to this approach, however. The size
of the datastore was not improved as the same data nodes are mounted
per ONU. There is also a known lack of tooling that supports schema
mount making it difficult for this solution to be broadly implemented
in a timely manner. The following alternative has been agreed upon.
Complement current standard YANG models with new models that
implement optimization measures for the data nodes applicable to ONU
devices. These current models are found in Broadband Forum standards,
e.g., TR-355, TR-383, TR-385, and standards from other organizations,
e.g., IETF, IEEE, ITU-T.
This involves:
·Deriving from existing standard modules, the development of modules
defining a list of ONU templates.
·Deriving from existing standard modules, the development of modules
defining a list of ONU instances, where each instance refers to one
or more ONU templates and gives the possibility to complement or
overrule any data originating from templates.
·Deriving from existing standard modules, the definition of modules
defining ONU profiles that can be shared between ONUs templates and
instances. ONU profiles should be distinct from OLT profiles to allow
validation rules that are specific to ONUs.
Deriving from existing standard modules means the modules will not be
used as written. Rather, applicable portions of those modules are
copied into new modules defining templates, profiles, etc. The
modules developed in this project will reference the source YANG
modules and specifications, and provide any license text as required
by the source organization.
Sincerely,
Lincoln Lavoie,
Broadband Forum Technical Committee Chair
**
*CC:*
Liaisons at BBF <[email protected]>
<mailto:[email protected]>
Lincoln Lavoie, Broadband Forum Technical Committee Chair
<[email protected]> <mailto:[email protected]>
Ken Ko, Broadband Forum Managing Director <[email protected]>
<mailto:[email protected]>
April Nowicki, Broadband Forum Member Support Manager
<[email protected]> <mailto:[email protected]>
Marta Seda, Broadband Forum FAN Work Area Director
<[email protected]> <mailto:[email protected]>
Joey Boyd, Broadband Forum PON Management Project Stream Leader
<[email protected]> <mailto:[email protected]>
**
*Broadband Forum Reference: *LIAISE-595
**
*Date of Upcoming Broadband Forum* *Meetings: *See
https://www.broadband-forum.org/category_meetings_and_events/upcoming-meetings
**
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