Green BoF requirements collections
draft-stephan-green-bof-reqs-collections-02
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| Document | Type | Active Internet-Draft (individual) | |
|---|---|---|---|
| Authors | Emile Stephan , Marisol Palmero | ||
| Last updated | 2024-09-03 | ||
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| Intended RFC status | (None) | ||
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draft-stephan-green-bof-reqs-collections-02
Getting Ready for Energy-Efficient Networking E. Stephan
Internet-Draft Orange
Intended status: Informational M. Palmero
Expires: 7 March 2025 Cisco Systems
3 September 2024
Green BoF requirements collections
draft-stephan-green-bof-reqs-collections-02
Abstract
This memo extracts and groups requirements from the revisit of
operator's requirements made in the last charter refinement work and
from the drafts which provided material to the green BoF. The aim is
to determine initial sets of requirements actionable at different
levels of the framework.
Discussion Venues
The source of this draft and an issue tracker can be found at
https://github.com/emile22/green-bof-req-collections
About This Document
This note is to be removed before publishing as an RFC.
The latest revision of this draft can be found at
https://emile22.github.io/green-bof-req-collections/draft-stephan-
green-bof-reqs-collections.html. Status information for this
document may be found at https://datatracker.ietf.org/doc/draft-
stephan-green-bof-reqs-collections/.
Discussion of this document takes place on the Getting Ready for
Energy-Efficient Networking Working Group mailing list (mailto:green-
bof@ietf.org), which is archived at
https://mailarchive.ietf.org/arch/browse/green-bof/. Subscribe at
https://www.ietf.org/mailman/listinfo/green-bof/.
Source for this draft and an issue tracker can be found at
https://github.com/emile22/green-bof-req-collections.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Operator'requirements from charter-refinement document . . . 3
3. Requirements extracted from legacy-path . . . . . . . . . . . 6
4. Requirements from rfc6988bis-green draft Open Issues . . . . 7
5. Requirements extracted from sustainability-insights uses
cases . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6. Framework Discussed During the BoF . . . . . . . . . . . . . 8
6.1. Inventory and Discovery . . . . . . . . . . . . . . . . . 10
6.2. GREEN Metrics . . . . . . . . . . . . . . . . . . . . . . 12
6.3. Monitor and Performance . . . . . . . . . . . . . . . . . 12
6.4. Control Energy Saving . . . . . . . . . . . . . . . . . . 12
7. Security . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
9. Informative References . . . . . . . . . . . . . . . . . . . 13
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 14
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 14
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1. Introduction
This memo extracts and groups requirements from the revisit of
operator's requirements made in the last charter refinement work
[charter-refinement] and from the drafts which provided material
[GREEN-BOF], [sustainability-insights], [legacy-path] and
[rfc6988bis-green] to the green BoF. The aim is to determine initial
sets of requirements actionable at different levels of the framework
presented in [charter-refinement].
The tables below respect the format and the semantic of operators
requirements table of [charter-refinement].
2. Operator'requirements from [charter-refinement] document
The table below is a copy of the operator'requirements table of
[charter-refinement]. They are based on the inputs received from
operators for the GREEN BoF [operators-inputs].
+================+=====================+===================+========+
| category | requirements | note |Priority|
+================+=====================+===================+========+
| Observability | Component | Per component |1 |
| | granularity, e.g., | measurement | |
| | per line-card, | | |
| | per-port | | |
+----------------+---------------------+-------------------+--------+
| Observability | Availability of | Related to |1 |
| | information on the | connected device | |
| | power consumption | case | |
| | of the device, | | |
| | without needing | | |
| | instrumentation | | |
| | connected to the | | |
| | infrastructure | | |
+----------------+---------------------+-------------------+--------+
| Observability | Triggering of | Alarm |1?? |
| | alarms when | notification | |
| | consumption | | |
| | deviate from a | | |
| | nominal usage | | |
+----------------+---------------------+-------------------+--------+
| Observability | Improvement of | Standardized |1 |
| | metering solutions | metering?? | |
| | (finer | | |
| | granularity, | | |
| | control of the | | |
| | energy efficiency | | |
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| | and saving, | | |
| | interoperability, | | |
| | exposure) | | |
+----------------+---------------------+-------------------+--------+
| Analysis | Common definition | Standard metric |1 |
| | of energy | | |
| | efficiency in | | |
| | network devices/ | | |
| | components | | |
+----------------+---------------------+-------------------+--------+
| Analysis | Common methodology | Standard |2 |
| | of measurements | methodology | |
| | for fair | | |
| | comparison | | |
+----------------+---------------------+-------------------+--------+
| Analysis | How to provide | Time based, |2 ?? |
| | accurate figures | location based | |
| | (context of the | visualization | |
| | measurement in | | |
| | terms of time | | |
| | period, location, | | |
| | traffic, etc | | |
+----------------+---------------------+-------------------+--------+
| Analysis | Database for | Information |3 |
| | decision in case | Correlation | |
| | of large data | | |
| | transfer | | |
+----------------+---------------------+-------------------+--------+
| Analysis | Ability of multi- | POI Use Case |3 |
| | layer analysis | | |
| | (e.g., IP plus | | |
| | optical) | | |
+----------------+---------------------+-------------------+--------+
| Control& Mgmt | To have devices | Dynamic Energy |2 |
| | with elastic power | Saving | |
| | consumption | | |
| | according to the | | |
| | carried traffic | | |
+----------------+---------------------+-------------------+--------+
| Control& Mgmt | Support of | Network Level |2 |
| | network-wide | Mgmt | |
| | energy saving and | | |
| | optimization | | |
| | functions | | |
+----------------+---------------------+-------------------+--------+
| Control& Mgmt | Support of | Network Level |2 |
| | network-wide | Mgmt | |
| | control of energy | | |
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| | optimization APIs, | | |
| | allowing external | | |
| | applications to | | |
| | optimize | | |
| | consumption | | |
+----------------+---------------------+-------------------+--------+
| Control& Mgmt | Advanced sleep | Dynamic Energy |2 |
| | mode, needing some | Saving | |
| | sort of low power | | |
| | mode when node is | | |
| | lightly utilized | | |
+----------------+---------------------+-------------------+--------+
| Control& Mgmt | Ability to steer | Traffic |4 |
| | traffic based on | Engineering | |
| | power savings | | |
+----------------+---------------------+-------------------+--------+
| Control& Mgmt | Comparison of | Intent based |2 |
| | decision vs | Concept | |
| | optimal case | | |
+----------------+---------------------+-------------------+--------+
| Control& Mgmt | Synchronous query | Network Level |2 |
| | support | Query | |
+----------------+---------------------+-------------------+--------+
| Inventory | Inventory of power | Component & |1 |
| Management | components (of | Device Level | |
| | devices, racks, | | |
| | etc) including | | |
| | together | | |
+----------------+---------------------+-------------------+--------+
| Interaction | Inclusion of data | Data Center Case |3 |
| with other | center networks in | | |
| domain | the picture | | |
+----------------+---------------------+-------------------+--------+
| Interaction | Inclusion of data | Mobile Network |3 |
| with other | center networks in | Case | |
| domain | the picture | | |
+----------------+---------------------+-------------------+--------+
| Sustainability | Optimize the | More renewable |4 |
| & Carbon | overall CO2 | energy | |
| Emission | footprint (i.e., | | |
| | energy mix based | | |
| | on source type) | | |
| | facilitating the | | |
| | engineering of PoP | | |
| | More renewable | | |
| | energy | | |
+----------------+---------------------+-------------------+--------+
| Sustainability | Support GHG units | Measurement Units |4 |
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| & Carbon | | | |
| Emission | | | |
+----------------+---------------------+-------------------+--------+
| Sustainability | Support Energy | More renewable |2 ?? |
| & Carbon | units | energy | |
| Emission | | | |
+----------------+---------------------+-------------------+--------+
| Sustainability | 4 | | |
| & Carbon | | | |
| EmissiCarbon, | | | |
| renewable | | | |
+----------------+---------------------+-------------------+--------+
| Sustainability | Accounting of | Accounting Cost |4 |
| & Carbon | legacy installed | | |
| Emission | based GHG/energy | | |
+----------------+---------------------+-------------------+--------+
| Sustainability | Track device/ | Manufacturing, |4 |
| & Carbon | network Energy | transport(weight, | |
| Emission | Consumption Before | volume, package) | |
| | Operation | | |
+----------------+---------------------+-------------------+--------+
Table 1
3. Requirements extracted from [legacy-path]
+============+============================+===========+==========+
| category | requirements | note | Priority |
+============+============================+===========+==========+
| Inventory | component control capacity | Per | 1 (i) |
| Management | (aka component max on/off | component | |
| | frequency supported) | control | |
+------------+----------------------------+-----------+----------+
| Analysis | assess the gains of | Device | 1 (ii) |
| | introducing eco-designed | Level | |
| | components in a device | Mgmt | |
+------------+----------------------------+-----------+----------+
| Control& | comprehensive support of | Network | 1 (iii) |
| Mgmt | network-wide energy | Level | |
| | efficiency includes legacy | Mgmt | |
| | devices | | |
+------------+----------------------------+-----------+----------+
Table 2
(i) Avoid control to break the component
(ii) the gain must be measurable
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(iii) network-wide solution must include legacy devices and green-wg
ready devices
4. Requirements from [rfc6988bis-green] draft Open Issues
+===============+=================+=====================+==========+
| category | requirements | note | Priority |
+===============+=================+=====================+==========+
| Control& Mgmt | Distinguish | rfc6988bis battery | 2 |
| | backup sources | | |
+---------------+-----------------+---------------------+----------+
| Inventory | Reporting on | Fit in "Inventory | 2 |
| Management | Other Entities, | of power components | |
| | typically smart | (of devices, racks, | |
| | PDU or PoE | etc) including | |
| | | together" | |
+---------------+-----------------+---------------------+----------+
| Observability | Room sensor | Data Center Case | 4 |
| or | (hvac...) | | |
| Interaction | | | |
| with Other | | | |
| domain | | | |
+---------------+-----------------+---------------------+----------+
| Observability | flexible | Standard metric | 2 |
| | (future-proof) | | |
| | description of | | |
| | the nature of | | |
| | the sources of | | |
| | the energy used | | |
+---------------+-----------------+---------------------+----------+
Table 3
5. Requirements extracted from [sustainability-insights] uses cases
There are limited to energy consumption vs sustainability
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+===============+=======================+================+==========+
| category | requirements | note | Priority |
+===============+=======================+================+==========+
| Observability | Provide near-real- | Helps identify | 2 |
| | time energy | which devices | |
| | consumption to | or network | |
| | different device | functions are | |
| | types, service | consuming more | |
| | types, and | energy. | |
| | individual users | | |
+---------------+-----------------------+----------------+----------+
| Migration or | Provide KPIs for | Helps make | |
| Upgrade | energy efficiency | informed | |
| | parameters, enhance | decisions | |
| | accuracy of upgrade | about upgrades | |
| | decisions | based on | |
| | | actual usage | |
| | | data. | |
+---------------+-----------------------+----------------+----------+
| Recycling | Report on percentage | Major driver | 4 |
| | of recycled user | of the | |
| | devices and | circular | |
| | components. Enable | economy, | |
| | comprehensive | transparency | |
| | reporting and | is key | |
| | recycling efforts | | |
+---------------+-----------------------+----------------+----------+
| Power | Provide KPIs for | Monitor | 4 |
| Optimization | energy efficiency | network and | |
| | parameters. Perform | application | |
| | actions to reduce | performance to | |
| | energy consumption | optimize power | |
| | | usage | |
+---------------+-----------------------+----------------+----------+
| Control& Mgmt | Stop and restart | Save power | 2 |
| Switch off | WiFi APs with the | consumption | |
| | right time, space, | during periods | |
| | and service | when APs are | |
| | granularity | not in use. | |
+---------------+-----------------------+----------------+----------+
Table 4
6. Framework Discussed During the BoF
The overall framework is shown in Figure 1.
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What needs to be standardized for Framework
(3) Network Domain Level :
(a) (b) (c)
Inventory Monitor +- DataSheets/DataBase and/or via API
Of identity Energy | Metadata and other device/component
and Capability Efficiency | /network related information:
^ ^ |
| | | .Power/Energy related metrics
| | | .information
| | | .origin of Energy Mix
| | | .carbon aware based on location
| | |
| | |
| | |
| | v
+--------------------------------------------------------------------+
| * |
| (2) controller (collection, compute and aggregate?) |
| |
+--------------------------------------------------------------------+
^ ^ ^ |
(d) | (e) | (f) | |(g)
Inventory | Monitor | GREEN WG: | |GREEN WG: Control
Capability | Traffic | Monitor power | |(Energy saving
| & power | Proportion, | |Functionality
| consumption | Energy efficiency| |Localized mgmt/
| | ratio, etc) | |network wide mgmt)
| | | |
| | | |
| | | v
+--------------------------------------------------------------------+
| * |
| (1) Device/Component Level |
| |
| +---------+ +-----------+ +----------------+ +----------------+ |
| | (I) | | (II) | | (III) | | (IV) | |
| | Network | | Device | | Legacy Network | | 'Attached'(PoE | |
| | Device | | Component | | Device | | kind) Device | |
| | | | | | | | | |
| +---------+ +-----------+ +----------------+ +----------------+ |
+--------------------------------------------------------------------+
(*) Energy Efficiency Management Function is implemented inside the
device or in a controller
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Figure 1: Framework discussed during the BoF
The main elements in the framework are as follows:
(a),(d) Inventory
(b),(c) GREEN Metrics
(b),(f) Monitor energy efficiency
(e) Monitor power consumption and traffic (IPPM WG throughput,
traffic load, etc)
(g) Control Energy Saving
6.1. Inventory and Discovery
Based on the framework discussed during the BoF, the architectural
requirements for the "GREEN" Framework:
From a network inventory [network-inventory] point of view, when
discussing Energy Efficiency metrics, also known as GREEN metrics, it
is important to distinguish between static and dynamic attributes:
"Static" attributes refer to those that do not change based on the
state of the network infrastructure. The following examples are all
static attributes that we can relate to the inventory, implemented in
the network devices or as part of external sources:
* Serial number
* Product name
* Part number
* Vendor
* Device family
* Sensor(s)
Static attributes also include benchmarking information related to
energy consumption by design and test conditions, normally associated
to PSU's, line-cards, etc.:
* Idle power
* Max power
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* Typical power
* Accuracy rate
* PSU efficiency (80+)
* Power allocation
* Etc.
These attributes might be collected from the device/component itself
or they might be parameters as part of external sources, i.e.,
databases owned by the hardware or software providers, where API
access will be preferred.
Normally, the "Discovery" process will be updating static attributes
that represent the up-to-date inventory of the network. The
Discovery process relates primarily to the static attributes, where
will consider if a device or component has been replaced or is out of
service. The "Operation" process will be updating the so-called
dynamic attributes.
Dynamic attributes are those that are subject to change due to the
running operations, including configuration and state changes, and
they will need to be collected regularly.
They will be updated as part of the regular operations. Dynamic
attributes might be related to sensors(environmental), traffic,
state, etc. They will include attributes like:
* Temperature
* Current
* Voltage
* Power
* Input and output traffic
The data collection frequency might need to be adjusted based on the
specific attributes. For example, the discovery of linecards
installed on network devices will not change every hour, whereas
temperature and power sensor information changes will need to be
closer to real-time.
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Even though sensors normally are embedded in the network device/
component, there are external sensors meant to measure temperature
and energy consumption. The network controller will need to collect
and correlate information to compose the right GREEN metric for the
network device/component.
!!! <<TBD>> GAP?? Definition for "Discovery" @ IETF references has
not been found.
6.2. GREEN Metrics
Based on the work initiated under
[I-D.draft-cx-opsawg-green-metrics-02], it might be required to
prioritise the definition and data models for the metrics relevant to
the components and network elements, as they will be the ones
influencing the most to the metrics related to flows, path and
network.
6.3. Monitor and Performance
Monitor and Performance will include the guidelines for the
association of the different attributes that defined the GREEN
metrics to compose and aggregate the data collection to formed the
reporting
The architecture could define a prefer interface, based in YANG as
the preferred data model, but should allow enough freedom in the
implementation, where any kind of quantity can be measured, any kind
of collection protocol and mechanism employed, and the telemetry data
flows aggregated using any kind of operation.
6.4. Control Energy Saving
Control will consider how to improve GREEN metrics with the final
goal to automate the monitoring, performance and remediation in case
of a fault or deviation of the performance defined for the metrics.
7. Security
Adding new interfaces on devices increase attack surfaces. Devices
have brief variation of power consumption due their internal works.
Reducing the power available may reduce their routing capacity which
may reduce network performance and resiliency.
8. IANA Considerations
This document has no IANA actions.
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9. Informative References
[charter-refinement]
"GREEN BOF Charter Refinement discussion", 20 August 2024,
<https://github.com/marisolpalmero/GREEN-
bof/blob/main/Meetings/Meeting_0820_2024/
GREEN%20BOF%20Charter%20Refining%20discussion-
2024-8-20.pdf>.
[GREEN-BOF]
"BOF proposal for GREEN WG Creation", 10 May 2024,
<https://github.com/marisolpalmero/GREEN-bof>.
[I-D.draft-cx-opsawg-green-metrics-02]
Clemm, A., Dong, L., Mirsky, G., Ciavaglia, L., Tantsura,
J., Odini, M., Schooler, E., Rezaki, A., and C. Pignataro,
"Green Networking Metrics", Work in Progress, Internet-
Draft, draft-cx-opsawg-green-metrics-02, 4 March 2024,
<https://datatracker.ietf.org/doc/html/draft-cx-opsawg-
green-metrics-02>.
[legacy-path]
"Requirements for Energy Efficiency Management", 21 July
2024, <https://datatracker.ietf.org/doc/draft-stephan-
legacy-path-eco-design>.
[network-inventory]
"YANG Data Model for Network Inventory", 20 July 2024,
<https://datatracker.ietf.org/doc/draft-ietf-ivy-network-
inventory-yang>.
[operators-inputs]
"Input from Operators to GREEN BoF", 20 July 2024,
<https://datatracker.ietf.org/meeting/120/materials/
slides-120-green-input-from-operators-to-green-bof-01>.
[rfc6988bis-green]
"Requirements for Energy Efficiency Management, 11 years
after the EMAN RFC6988", 21 July 2024,
<https://datatracker.ietf.org/doc/draft-eman-green-
rfc6988bis>.
[sustainability-insights]
"Sustainability Insights", 7 May 2024,
<https://datatracker.ietf.org/doc/html/draft-almprs-
sustainability-insights>.
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Acknowledgments
This version collectes works from the Green Bof proponents: Luis,
Marisol, Tony, Qin and Emile, from our coachs Jari, Adrian and
Benoit, and from our supporter Tobe
Authors' Addresses
Emile Stephan
Orange
France
Email: emile.stephan@gmail.com
Marisol Palmero
Cisco Systems
Email: mpalmero@cisco.com
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