< draft-ggalimbe-ccamp-flexigrid-carrier-label-06.txt   draft-ggalimbe-ccamp-flexigrid-carrier-label-07.txt >
Internet Engineering Task Force G. Galimberti, Ed. Internet Engineering Task Force G. Galimberti, Ed.
Internet-Draft D. La Fauci Internet-Draft D. La Fauci
Intended status: Experimental Cisco Intended status: Experimental Cisco
Expires: September 12, 2019 A. Zanardi, Ed. Expires: January 9, 2020 A. Zanardi, Ed.
L. Galvagni L. Galvagni
FBK-CreateNet FBK-CreateNet
March 11, 2019 July 8, 2019
Signaling extensions for Media Channel sub-carriers configuration in Signaling extensions for Media Channel sub-carriers configuration in
Spectrum Switched Optical Networks (SSON) in Lambda Switch Capable (LSC) Spectrum Switched Optical Networks (SSON) in Lambda Switch Capable (LSC)
Optical Line Systems. Optical Line Systems.
draft-ggalimbe-ccamp-flexigrid-carrier-label-06 draft-ggalimbe-ccamp-flexigrid-carrier-label-07
Abstract Abstract
This memo defines the signaling extensions for managing Spectrum This memo defines the signaling extensions for managing Spectrum
Switched Optical Network (SSON) parameters shared between the Client Switched Optical Network (SSON) parameters shared between the Client
and the Network and inside the Network in accordance to the model and the Network and inside the Network in accordance to the model
described in RFC 7698. The extensions are in accordance and described in RFC 7698. The extensions are in accordance and
extending the parameters defined in ITU-T Recommendation extending the parameters defined in ITU-T Recommendation
G.694.1.[ITU.G694.1] and its extensions and G.872.[ITU.G872]. G.694.1.[ITU.G694.1] and its extensions and G.872.[ITU.G872].
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on September 12, 2019. This Internet-Draft will expire on January 9, 2020.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
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Figure 1: Multi carrier LSP Figure 1: Multi carrier LSP
2. Client interface parameters 2. Client interface parameters
The Edge Node interface can have one or multiple carriers (OTSi). The Edge Node interface can have one or multiple carriers (OTSi).
All the carrier have the same characteristics and are provisionable All the carrier have the same characteristics and are provisionable
in terms of: in terms of:
Number of subcarriers: Number of subcarriers:
This parameter indicates the number of subcarriers available for This parameter indicates the number of subcarriers (OTSi)
the super-channel in case the Transceiver can support multiple available for the super-channel (OTSiG) in case the Transceiver
carrier circuits. can support multiple carrier circuits. The OTSi is defined in
ITU-T Recommendation G.959.1, section 3.2.4 [G.959.1]. The OTSiG
is currently being moved from ITU-T Recommendation G.709 [G.709]
to the new draft Recommendation G.807 (still work in progress)
[G.807]. The OTSiG is an electrical signal that is carried by one
or more OTSi's. The relationship between the OTSiG and the the
OTSi's is described in ITU-T draft Recommendation G.807, section
10.2 [G.807].
Central frequency (see G.694.1 Table 1): Central frequency (see G.694.1 Table 1):
This parameter indicates the Central frequency value that Ss and This parameter indicates the Central frequency value that Ss and
Rs will be set to work (in THz). See the details in Section 6/ Rs will be set to work (in THz). See the details in Section 6/
G.694.1 or based on "n" value explanation and the following "k" G.694.1 or based on "n" value explanation and the following "k"
values definition in case of multicarrier transceivers. values definition in case of multicarrier transceivers.
Central frequency granularity: Central frequency granularity:
This parameter indicates the Central frequency granularity This parameter indicates the Central frequency granularity
supported by the transceiver, this value is combined with k and n supported by the transceiver, this value is combined with k and n
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4.1. New LSP set-up parameters 4.1. New LSP set-up parameters
When the E.N. wants to request to the C.N. a new circuit set-up When the E.N. wants to request to the C.N. a new circuit set-up
request or the GMPLS wants to signal in the SSON network the Optical request or the GMPLS wants to signal in the SSON network the Optical
Interface characteristics the following parameters will be provided Interface characteristics the following parameters will be provided
to the C.N.: to the C.N.:
Number of available subcarriers (c): Number of available subcarriers (c):
This parameter is an integer and identifies the number of Client This parameter is an integer and identifies the number of Client
ports connected to the Core ports available to suport the ports connected to the Core ports available to suport the
requested circuit requested circuit, this identify also the number of OTSi in an
OTSiG.
Total bandwidth request: Total bandwidth request:
e.g. 200Gb, 400Gb, 1Tb - it is the bandwidth (payload) to be e.g. 200Gb, 400Gb, 1Tb - it is the bandwidth (payload) to be
carried by the multiple carrier circuit carried by the multiple carrier circuit (OTSiG). In alternative
the OTUCn can be used
Policy (strict/loose): Policy (strict/loose):
Strict/loose referred to B/W and subcarrier number. This is to Strict/loose referred to B/W and subcarrier number. This is to
give some flexibility to the GMPLS in order to commit client give some flexibility to the GMPLS in order to commit client
request. request.
Subcarrier bandwidth tunability: Subcarrier bandwidth tunability:
(optional) e.g. 34Ghz, 48GHz. (optional) e.g. 34Ghz, 48GHz.
The TLV define the resource constraints for the requested Media The TLV define the resource constraints for the requested Media
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- B = 0: the value is the maximum requested bandwidth (a lower - B = 0: the value is the maximum requested bandwidth (a lower
value can be allocated if resources are not available) value can be allocated if resources are not available)
- B = 1: the requested bandwidth is the minimum value to be - B = 1: the requested bandwidth is the minimum value to be
allocated (a higher value can be allocated if requested allocated (a higher value can be allocated if requested
by the physical constraints of the ports) by the physical constraints of the ports)
Reserved: unused bit (for future use, should be 0) Reserved: unused bit (for future use, should be 0)
Note: bandwidth unit is defined in accordance to RFC 3471 Note: bandwidth unit is defined in accordance to RFC 3471
chap. 3.1.2 Bandwith Encoding specification. Bandwidth higher chap. 3.1.2 Bandwith Encoding specification. Bandwidth higher
than 40Gb/s values must be defined (e.g. 100Gb/s, 150Gb/s than 40Gb/s values must be defined (e.g. 100Gb/s, 150Gb/s
400Gb/s, etc.) 400Gb/s, etc.) or in alternative the OTUCn defined in
ITU-T G.709.
TLV Usage: TLV Usage:
Head UNI-C PATH: requested traffic constraints, the Head UNI-N node Head UNI-C PATH: requested traffic constraints, the Head UNI-N node
must satisfy when reserving the optical resources and defining must satisfy when reserving the optical resources and defining
the carriers configuration the carriers configuration
The TLV can be omitted: no traffic constraints is defined (resources The TLV can be omitted: no traffic constraints is defined (resources
allocated by UNI-N based on a local policy) allocated by UNI-N based on a local policy)
4.2. Extension to LSP set-up reservation 4.2. Extension to LSP set-up reservation
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FEC Coding: FEC Coding:
This parameter indicate what Forward Error Correction (FEC) code This parameter indicate what Forward Error Correction (FEC) code
must be used by the Transceivers (not mentioned in G.698). . must be used by the Transceivers (not mentioned in G.698). .
Bit rate / Baud rate of optical tributary signals: Bit rate / Baud rate of optical tributary signals:
Optical tributary signal bit (for NRZ signals) rate or Symbol (for Optical tributary signal bit (for NRZ signals) rate or Symbol (for
Multiple bit per symbol) rate. Multiple bit per symbol) rate.
List of subcarriers: List of subcarriers:
This parameter indicates the subcarriers to be used for the super- This parameter indicates the subcarriers to be used for the super-
channel in case the Transceiver can support multiple carrier channel (OTSiG) in case the Transceiver can support multiple
Circuits. carrier Circuits.
Central frequency granularity (J): Central frequency granularity (J):
This parameter indicates the Central frequency granularity This parameter indicates the Central frequency granularity
supported by the transceiver, this value is combined with K and n supported by the transceiver, this value is combined with K and n
value to calculate the central frequency on the carrier or sub- value to calculate the central frequency on the carrier or sub-
carriers. carriers.
Central frequency (see G.694.1 Table 1): Central frequency (see G.694.1 Table 1):
Grid, Identifiers, central frequency and granularity. Grid, Identifiers, central frequency and granularity.
Laser Output power: Laser Output power:
This parameter provisions the Transceiver Output power, it can be This parameter provisions the Transceiver Output power, it can be
either a setting and measured value. either a setting and measured value.
Circuit Path, RRO, etc: Circuit Path, RRO, etc:
All these info are defined in [RFC4208]. All these info are defined in [RFC4208].
Path Error: Path Error:
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| k | | k |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| sub-TLVs | | sub-TLVs |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 4: Sub-Carrier parameters Figure 4: Sub-Carrier parameters
Carrier set-up: Carrier set-up:
- Carrier identifier field: sub-carrier - Carrier identifier field: sub-carrier (OTSi) identifier
identifier inside the mediachannel. Identifies the carrier inside the OTSiG (corresponding to the media channel).
Identifies the carrier
position inside the Media Channel (16-bit unsigned integer) position inside the Media Channel (16-bit unsigned integer)
The Carrier Identifier is the logical circuit sub-lane The Carrier Identifier is the logical circuit sub-lane
position, a TLV for each value from 1 to the number of position, a TLV for each value from 1 to the number of
allocated carriers must be present. allocated carriers must be present.
- J field: granularity of the channel spacing, can be a - J field: granularity of the channel spacing, can be a
multiple of 0.01GHz. - default value is 0.1GHz. multiple of 0.01GHz. - default value is 0.1GHz.
- K field: positive or negative integer (including 0) to multiply - K field: positive or negative integer (including 0) to multiply
by J and identify the Carrier Position inside the by J and identify the Carrier Position inside the
Media Channel, offset from media Channel Central frequency Media Channel, offset from media Channel Central frequency
- sub-TLVs: additional information related to carriers if needed - sub-TLVs: additional information related to carriers if needed
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