Internet Engineering Task Force G.Galimberti, Ed. Internet-Draft Cisco Intended status: Standards Track R.Kunze, Ed. Expires: April 21, 2016 Deutsche Telekom K. Lam, Ed. Alcatel-Lucent D. Hiremagalur, Ed. G. G.Grammel, Ed. Juniper L.Fang, Ed. G.Ratterree, Ed. Microsoft October 19, 2015 A YANG model to manage the optical interface parameters for an external transponder in a WDM network draft-dharini-netmod-dwdm-if-yang-00 Abstract This memo defines a Yang model that translates the SNMP mib module defined in draft-galikunze-ccamp-dwdm-if-snmp-mib for managing single channel optical interface parameters of DWDM applications. This model is to support the optical parameters specified in ITU-T G.698.2 [ITU.G698.2] and application identifiers specified in ITU-T G.874.1 [ITU.G874.1] . Note that G.874.1 encompasses vendor-specific codes, which if used would make the interface a single vendor IaDI and could still be managed. The Yang model defined in this memo can be used for Optical Parameters monitoring and/or configuration of the endpoints of the multi-vendor IaDI optical link. Copyright Notice Copyright (c) 2014 IETF Trust and the persons identified as the document authors. All rights reserved. Status of This Memo This Internet-Draft is submitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF). Note that other groups may also distribute working documents as Internet-Drafts. The list of current Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. G.Galimberti, et al. Expires April 21, 2016 [Page 1] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on April 21, 2016. Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3 2. The Internet-Standard Management Framework . . . . . . . . . 4 3. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 4 4. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4 4.1. Optical Parameters Description . . . . . . . . . . . . . 5 4.1.1. Rs-Ss Configuration . . . . . . . . . . . . . . . . . 6 4.1.2. Table of Application Codes . . . . . . . . . . . . . 7 4.2. Use Cases . . . . . . . . . . . . . . . . . . . . . . . . 7 4.3. Optical Interface for external transponder in a WDM network . . . . . . . . . . . . . . . . . . . . . . . . . 7 5. Structure of the Yang Module . . . . . . . . . . . . . . . . 8 6. Yang Module . . . . . . . . . . . . . . . . . . . . . . . . . 8 7. Security Considerations . . . . . . . . . . . . . . . . . . . 13 8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 14 9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 14 10. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 14 11. References . . . . . . . . . . . . . . . . . . . . . . . . . 15 11.1. Normative References . . . . . . . . . . . . . . . . . . 15 11.2. Informative References . . . . . . . . . . . . . . . . . 17 Appendix A. Change Log . . . . . . . . . . . . . . . . . . . . . 18 Appendix B. Open Issues . . . . . . . . . . . . . . . . . . . . 18 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 18 G.Galimberti, et al. Expires April 21, 2016 [Page 2] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 1. Introduction This memo defines a Yang model that translates the SNMP mib module defined in draft-galikunze-ccamp-dwdm-if-snmp-mib for managing single channel optical interface parameters of DWDM applications, using the approach specified in G.698.2. This model is to support the optical parameters specified in ITU-T G.698.2 [ITU.G698.2], application identifiers specified in ITU-T G.874.1 [ITU.G874.1] and the Optical Power at Transmitter and Receiver side. Note that G.874.1 encompasses vendor-specific codes, which if used would make the interface a single vendor IaDI and could still be managed.` [Editor's note: In G.698.2 this corresponds to the optical path from point S to R; network media channel is also used and explained in draft-ietf-ccamp-flexi-grid-fwk-02] Management will be performed at the edges of the network media channel (i.e., at the transmitters and receivers attached to the S and R reference points respectively) for the relevant parameters specified in G.698.2 [ITU.G698.2], G.798 [ITU.G798], G.874 [ITU.G874], and the performance parameters specified in G.7710/Y.1701 [ITU-T G.7710] and G.874.1 [ITU.G874.1]. G.698.2 [ITU.G698.2] is primarily intended for metro applications that include optical amplifiers. Applications are defined in G.698.2 [ITU.G698.2] using optical interface parameters at the single-channel connection points between optical transmitters and the optical multiplexer, as well as between optical receivers and the optical demultiplexer in the DWDM system. This Recommendation uses a methodology which does not explicitly specify the details of the optical network between reference point Ss and Rs, e.g., the passive and active elements or details of the design. The Recommendation currently includes unidirectional DWDM applications at 2.5 and 10 Gbit/s (with 100 GHz and 50 GHz channel frequency spacing). Work is still under way for 40 and 100 Gbit/s interfaces. There is possibility for extensions to a lower channel frequency spacing. This document specifically refers to the "application code" defined in the G.698.2 [ITU.G698.2] and included in the Application Identifier defined in G.874.1 [ITU.G874.1] and G.872 [ITU.G872], plus a few optical parameters not included in the G.698.2 application code specification. This draft refers and supports the draft-kdkgall-ccamp-dwdm-if-mng- ctrl-fwk The building of a yang model describing the optical parameters defined in G.698.2 [ITU.G698.2], and reflected in G.874.1 [ITU.G874.1], allows the different vendors and operator to retrieve, G.Galimberti, et al. Expires April 21, 2016 [Page 3] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 provision and exchange information across the G.698.2 multi-vendor IaDI in a standardized way. In addition to the parameters specified in ITU recommendations the Yang models support also the "vendor specifica application identifier", the Tx and Rx power at the Ss and Rs points and the channel frequency. The Yang Model, reporting the Optical parameters and their values, characterizes the features and the performances of the optical components and allow a reliable link design in case of multi vendor optical networks. Although RFC 3591 [RFC3591], which draft-galikunze-ccamp-DWDM-if- snmp-mib is extending, describes and defines the SNMP MIB of a number of key optical parameters, alarms and Performance Monitoring, as this RFC is over a decade old, it is primarily pre-OTN, and a more complete and up-to-date description of optical parameters and processes can be found in the relevant ITU-T Recommendations. The same considerations can be applied to the RFC 4054 [RFC4054]. 2. The Internet-Standard Management Framework For a detailed overview of the documents that describe the current Internet-Standard Management Framework, please refer to section 7 of RFC 3410 [RFC3410]. This memo specifies a Yang model for optical interfaces. 3. Conventions The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119] In the description of OIDs the convention: Set (S) Get (G) and Trap (T) conventions will describe the action allowed by the parameter. 4. Overview G.Galimberti, et al. Expires April 21, 2016 [Page 4] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 Figure 1 shows a set of reference points, for single-channel connection between transmitters (Tx) and receivers (Rx). Here the DWDM network elements include an OM and an OD (which are used as a pair with the opposing element), one or more optical amplifiers and may also include one or more OADMs. +-------------------------------------------------+ Ss | DWDM Network Elements | Rs +--+ | | | \ / | | | +--+ Tx L1--|->| \ +------+ +------+ / |--|-->Rx L1 +---+ | | | | | +------+ | | | | | +--+ +---+ | | | | | | | | | | | | +--+ Tx L2--|->| OM |-->|------|->| OADM |--|------|->| OD |--|-->Rx L2 +---+ | | | | | | | | | | | | +--+ +---+ | | | | | +------+ | | | | | +--+ Tx L3--|->| / | DWDM | | ^ | DWDM | \ |--|-->Rx L3 +---+ | | / | Link +----|--|----+ Link | \ | | +--+ +-----------+ | | +----------+ +--+ +--+ | | Rs v | Ss +-----+ +-----+ |RxLx | |TxLx | +-----+ +-----+ Ss = reference point at the DWDM network element tributary output Rs = reference point at the DWDM network element tributary input Lx = Lambda x OM = Optical Mux OD = Optical Demux OADM = Optical Add Drop Mux from Fig. 5.1/G.698.2 Figure 1: External transponder in WDM netwoks 4.1. Optical Parameters Description The link between the external transponders through a WDM network media channels are managed at the edges, i.e. at the transmitters (Tx) and receivers (Rx) attached to the S and R reference points respectively. The set of parameters that could be managed are defined by the "application code" notation The definitions of the optical parameters are provided below to increase the readability of the document, where the definition is G.Galimberti, et al. Expires April 21, 2016 [Page 5] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 ended by (R) the parameter can be retrieve with a read, when (W) it can be provisioned by a write, (R,W) can be either read or written. 4.1.1. Rs-Ss Configuration The Rs-Ss configuration table allows configuration of Central Frequency, Power and Application codes as described in [ITU.G698.2] and G.694.1 [ITU.G694.1] This parameter report the current Transceiver Output power, it can be either a setting and measured value (G, S). Central frequency (see G.694.1 Table 1) (see G.694.1 Table 1): This parameter indicates the Central frequency value that Ss and Rs will be set to work (in THz). See the details in Section 6/ G.694.1 (G, S). Single-channel application codes(see G.698.2): This parameter indicates the transceiver application code at Ss and Rs as defined in [ITU.G698.2] Chapter 5.4 - this parameter can be called Optical Interface Identifier OII as per [draft- martinelli-wson-interface-class](G). Number of Single-channel application codes Supported This parameter indicates the number of Single-channel application codes supported by this interface (G). Current Laser Output power: This parameter report the current Transceiver Output power, it can be either a setting and measured value (G, S). Current Laser Input power: This parameter report the current Transceiver Input power (G). +---------------------------------------------+---------+-----------+ | PARAMETERS | Get/Set | Reference | +---------------------------------------------+---------+-----------+ | Central frequency Value | G,S | G.694.1 | | | | S.6 | | Single-channel application codes | G | G.698.2 | | | | S.5.3 | | Number of Single-channel application codes | G | N.A. | | Supported | | | | Current Output Power | G,S | N.A. | | Current Input Power | G | N.A. | +---------------------------------------------+---------+-----------+ Table 1: Rs-Ss Configuration G.Galimberti, et al. Expires April 21, 2016 [Page 6] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 4.1.2. Table of Application Codes This table has a list of Application codes supported by this interface at point R are defined in G.698.2. Application code Identifier: The Identifier for the Application code. Application code Type: This parameter indicates the transceiver type of application code at Ss and Rs as defined in [ITU.G874.1], that is used by this interface Standard = 0, PROPRIETARY = 1 The first 6 octets of the printable string will be the OUI (organizationally unique identifier) assigned to the vendor whose implementation generated the Application Identifier Code. Application code Length: The number of octets in the Application Code. Application code: This is the application code that is defined in G.698.2 or the vendor generated code which has the OUI. 4.2. Use Cases The use cases are described in draft-kdkgall-ccamp-dwdm-if-mng-ctrl- fwk 4.3. Optical Interface for external transponder in a WDM network The ietf-ext-xponder-wdm-if is an augment to the ietf-interface. It allows the user to set the application code/vendor transceiver class/ Central frequency and the output power. The module can also be used to get the list of supported application codes/transceiver class and also the Central frequency/output power/input power of the interface. G.Galimberti, et al. Expires April 21, 2016 [Page 7] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 module: ietf-ext-xponder-wdm-if augment /if:interfaces/if:interface: +--rw optIfOChRsSs +--rw if-current-application-code | +--rw application-code-id uint8 | +--rw application-code-type uint8 | +--rw application-code-length uint8 | +--rw application-code? string +--ro if-supported-application-codes | +--ro number-application-codes-supported? uint32 | +--ro application-codes-list* [application-code-id] | +--ro application-code-id uint8 | +--rw application-code-type uint8 | +--rw application-code-length uint8 | +--ro application-code? string +--rw output-power? int32 +--ro input-power? int32 +--rw central-frequency? uint32 notifications: +---n opt-if-och-central-frequency-change | +--ro if-name? leafref | +--ro new-central-frequency | +--ro central-frequency? uint32 +---n opt-if-och-application-code-change | +--ro if-name? leafref | +--ro new-application-code | +--ro application-code-id? uint8 | +--rw application-code-type uint8 | +--rw application-code-length uint8 | +--ro application-code? string 5. Structure of the Yang Module ietf-ext-xponder-wdm-if is a top level model for the support of this feature. 6. Yang Module The ietf-ext-xponder-wdm-if is defined as an extension to ietf interfaces. file "ietf-ext-xponder-wdm-if.yang" G.Galimberti, et al. Expires April 21, 2016 [Page 8] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 module ietf-ext-xponder-wdm-if { namespace "urn:ietf:params:xml:ns:yang:ietf-ext-xponder-wdm-if"; prefix ietf-ext-xponder-wdm-if; import ietf-interfaces { prefix if; } organization "IETF NETMOD (NETCONF Data Modelling Language) Working Group"; contact "WG Web: WG List: WG Chair: Thomas Nadeau WG Chair: Juergen Schoenwaelder Editor: Dharini Hiremagalur "; description "This module contains a collection of YANG definitions for configuring Optical interfaces. Copyright (c) 2013 IETF Trust and the persons identified as authors of the code. All rights reserved. Redistribution and use in source and binary forms, with or without modification, is permitted pursuant to, and subject to the license terms contained in, the Simplified BSD License set forth in Section 4.c of the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info)."; revision "2015-06-24" { description "Revision 4.0"; reference " draft-dharini-netmod-dwdm-if-yang 3.0"; } revision "2015-02-24" { description G.Galimberti, et al. Expires April 21, 2016 [Page 9] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 "Revision 3.0"; reference " draft-dharini-netmod-dwdm-if-yang 3.0"; } revision "2014-11-10" { description "Revision 2.0"; reference " "; } revision "2014-10-14" { description "Revision 1.0"; reference " "; } revision "2014-05-10" { description "Initial revision."; reference "RFC XXXX: A YANG Data Model for Optical Management of an Interface for an external transponder in a WDM netwrok"; } grouping opt-if-och-application-code { description "Application code entity."; leaf application-code-id { type uint8 { range "1..255"; } description "Id for the Application code"; } leaf application-code-type { type uint8 { range "0..1"; } description "Type for the Application code 0 - Standard, 1 - Proprietory When the Type is Proprietory, then the first 6 octets of the application-code G.Galimberti, et al. Expires April 21, 2016 [Page 10] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 will be the OUI (organizationally unique identifier)"; } leaf application-code-length { type uint8 { range "1..255"; } description "Number of octets in the Application code"; } leaf application-code { type string { length "1..255"; } description "This parameter indicates the transceiver application code at Ss and Rs as defined in [ITU.G698.2] Chapter 5.3, that is/should be used by this interface. The optIfOChApplicationsCodeList has all the application codes supported by this interface."; } } grouping opt-if-och-application-code-list { description "List of Application codes group."; leaf number-application-codes-supported { type uint32; description "Number of Application codes supported by this interface"; } list application-code-list { key "application-code-id"; description "List of the application codes"; uses opt-if-och-application-code; } } grouping opt-if-och-power { description "Interface optical Power"; leaf output-power { type int32; units ".01dbm"; G.Galimberti, et al. Expires April 21, 2016 [Page 11] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 description "The output power for this interface in .01 dBm."; } leaf input-power { type int32; units ".01dbm"; config false; description "The current input power of this interface"; } } grouping opt-if-och-central-frequency { description "Interface Central Frequency"; leaf central-frequency { type uint32; description "This parameter indicate This parameter indicates the frequency of this interface "; } } notification opt-if-och-central-frequency-change { description "A change of Central Frequency has been detected."; leaf "if-name" { type leafref { path "/if:interfaces/if:interface/if:name"; } description "Interface name"; } container opt-if-och-central-frequency { description "The new Central Frequency of the interface"; uses opt-if-och-central-frequency; } } notification opt-if-och-application-code-change { description "A change of Application code has been detected."; leaf "if-name" { type leafref { path "/if:interfaces/if:interface/if:name"; } description "Interface name"; } G.Galimberti, et al. Expires April 21, 2016 [Page 12] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 container new-application-code { description "The new application code for the interface"; uses opt-if-och-application-code; } } augment "/if:interfaces/if:interface" { description "Parameters for an optical interface"; container optIfOChRsSs { description "RsSs path configuration for an interface"; container if-current-application-code { description "Current Application code of the interface"; uses opt-if-och-application-code; } container if-supported-application-codes { config false; description "Supported Application codes of the interface"; uses opt-if-och-application-code-list; } uses opt-if-och-power; uses opt-if-och-central-frequency; } } } 7. Security Considerations The YANG module defined in this memo is designed to be accessed via the NETCONF protocol [RFC6241]. he lowest NETCONF layer is the secure transport layer and the mandatory-to-implement secure transport is SSH [RFC6242]. The NETCONF access control model [RFC6536] provides the means to restrict access for particular NETCONF users to a pre- configured subset of all available NETCONF protocol operation and content. G.Galimberti, et al. Expires April 21, 2016 [Page 13] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 8. IANA Considerations This document registers a URI in the IETF XML registry [RFC3688]. Following the format in [RFC3688], the following registration is requested to be made: URI: urn:ietf:params:xml:ns:yang:ietf-interfaces:ietf-ext-xponder- wdm-if Registrant Contact: The IESG. XML: N/A, the requested URI is an XML namespace. This document registers a YANG module in the YANG Module Names registry [RFC6020]. This document registers a YANG module in the YANG Module Names registry [RFC6020]. prefix: ietf-ext-xponder-wdm-if reference: RFC XXXX 9. Acknowledgements Gert Grammel is partly funded by European Union Seventh Framework Programme under grant agreement 318514 CONTENT. 10. Contributors G.Galimberti, et al. Expires April 21, 2016 [Page 14] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 Dean Bogdanovic Juniper Networks Westford U.S.A. email deanb@juniper.net Bernd Zeuner Deutsche Telekom Darmstadt Germany email B.Zeuner@telekom.de Arnold Mattheus Deutsche Telekom Darmstadt Germany email a.mattheus@telekom.de Manuel Paul Deutsche Telekom Berlin Germany email Manuel.Paul@telekom.de Walid Wakim Cisco 9501 Technology Blvd ROSEMONT, ILLINOIS 60018 UNITED STATES email wwakim@cisco.com 11. References 11.1. Normative References [RFC2863] McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB", RFC 2863, DOI 10.17487/RFC2863, June 2000, . [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . G.Galimberti, et al. Expires April 21, 2016 [Page 15] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 [RFC2578] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Structure of Management Information Version 2 (SMIv2)", STD 58, RFC 2578, DOI 10.17487/RFC2578, April 1999, . [RFC2579] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Textual Conventions for SMIv2", STD 58, RFC 2579, DOI 10.17487/RFC2579, April 1999, . [RFC2580] McCloghrie, K., Ed., Perkins, D., Ed., and J. Schoenwaelder, Ed., "Conformance Statements for SMIv2", STD 58, RFC 2580, DOI 10.17487/RFC2580, April 1999, . [RFC3591] Lam, H-K., Stewart, M., and A. Huynh, "Definitions of Managed Objects for the Optical Interface Type", RFC 3591, DOI 10.17487/RFC3591, September 2003, . [RFC6205] Otani, T., Ed. and D. Li, Ed., "Generalized Labels for Lambda-Switch-Capable (LSC) Label Switching Routers", RFC 6205, DOI 10.17487/RFC6205, March 2011, . [ITU.G698.2] International Telecommunications Union, "Amplified multichannel dense wavelength division multiplexing applications with single channel optical interfaces", ITU-T Recommendation G.698.2, November 2009. [ITU.G709] International Telecommunications Union, "Interface for the Optical Transport Network (OTN)", ITU-T Recommendation G.709, March 2003. [ITU.G872] International Telecommunications Union, "Architecture of optical transport networks", ITU-T Recommendation G.872, November 2001. [ITU.G798] International Telecommunications Union, "Characteristics of optical transport network hierarchy equipment functional blocks", ITU-T Recommendation G.798, October 2010. G.Galimberti, et al. Expires April 21, 2016 [Page 16] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 [ITU.G874] International Telecommunications Union, "Management aspects of optical transport network elements", ITU-T Recommendation G.874, July 2010. [ITU.G874.1] International Telecommunications Union, "Optical transport network (OTN): Protocol-neutral management information model for the network element view", ITU-T Recommendation G.874.1, January 2002. [ITU.G959.1] International Telecommunications Union, "Optical transport network physical layer interfaces", ITU-T Recommendation G.959.1, November 2009. [ITU.G826] International Telecommunications Union, "End-to-end error performance parameters and objectives for international, constant bit-rate digital paths and connections", ITU-T Recommendation G.826, November 2009. [ITU.G8201] International Telecommunications Union, "Error performance parameters and objectives for multi-operator international paths within the Optical Transport Network (OTN)", ITU-T Recommendation G.8201, April 2011. [ITU.G694.1] International Telecommunications Union, "Spectral grids for WDM applications: DWDM frequency grid", ITU-T Recommendation G.694.1, June 2002. [ITU.G7710] International Telecommunications Union, "Common equipment management function requirements", ITU-T Recommendation G.7710, May 2008. 11.2. Informative References [RFC3410] Case, J., Mundy, R., Partain, D., and B. Stewart, "Introduction and Applicability Statements for Internet- Standard Management Framework", RFC 3410, DOI 10.17487/RFC3410, December 2002, . G.Galimberti, et al. Expires April 21, 2016 [Page 17] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 [RFC2629] Rose, M., "Writing I-Ds and RFCs using XML", RFC 2629, DOI 10.17487/RFC2629, June 1999, . [RFC4181] Heard, C., Ed., "Guidelines for Authors and Reviewers of MIB Documents", BCP 111, RFC 4181, DOI 10.17487/RFC4181, September 2005, . [I-D.kdkgall-ccamp-dwdm-if-mng-ctrl-fwk] Kunze, R., Grammel, G., Beller, D., and G. Galimberti, "A framework for Management and Control of G.698.2 optical interface parameters", draft-kdkgall-ccamp-dwdm-if-mng- ctrl-fwk-00 (work in progress), October 2015. [RFC4054] Strand, J., Ed. and A. Chiu, Ed., "Impairments and Other Constraints on Optical Layer Routing", RFC 4054, DOI 10.17487/RFC4054, May 2005, . Appendix A. Change Log This optional section should be removed before the internet draft is submitted to the IESG for publication as an RFC. Note to RFC Editor: please remove this appendix before publication as an RFC. Appendix B. Open Issues Note to RFC Editor: please remove this appendix before publication as an RFC. Authors' Addresses Gabriele Galimberti (editor) Cisco Via Santa Maria Molgora, 48 c 20871 - Vimercate Italy Phone: +390392091462 Email: ggalimbe@cisco.com G.Galimberti, et al. Expires April 21, 2016 [Page 18] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 Ruediger Kunze (editor) Deutsche Telekom Dddd, xx Berlin Germany Phone: +49xxxxxxxxxx Email: RKunze@telekom.de Kam Lam (editor) Alcatel-Lucent USA Phone: +1 732 331 3476 Email: kam.lam@alcatel-lucent.com Dharini Hiremagalur (editor) Juniper 1194 N Mathilda Avenue Sunnyvale - 94089 California USA Email: dharinih@juniper.net Gert Grammel (editor) Juniper Oskar-Schlemmer Str. 15 80807 Muenchen Germany Phone: +49 1725186386 Email: ggrammel@juniper.net Luyuan Fang (editor) Microsoft 5600 148th Ave NE Redmond, WA 98502 USA Email: lufang@microsoft.com G.Galimberti, et al. Expires April 21, 2016 [Page 19] Internet-Draft draft-dharini-netmod-dwdm-if-yang-00 October 2015 Gary Ratterree (editor) Microsoft 5600 148th Ave NE Redmond, WA 98502 USA Email: gratt@microsoft.com G.Galimberti, et al. Expires April 21, 2016 [Page 20]