Internet-Draft | OSPF Terminology | May 2023 |
Fox, et al. | Expires 26 November 2023 | [Page] |
- Workgroup:
- Link State Routing
- Internet-Draft:
- draft-ietf-lsr-ospf-terminology-09
- Updates:
- 2328 5340 4222 4811 5243 5614 5838 (if approved)
- Published:
- Intended Status:
- Standards Track
- Expires:
Update to OSPF Terminology
Abstract
This document updates some OSPF terminology to be in line with inclusive language used in the industry. The IETF has designated US National Institute of Standards and Technology (NIST) "Guidance for NIST Staff on Using Inclusive Language in Documentary Standards" for its inclusive language guidelines. It is intended that all future OSPF documents use this revised terminology even when they reference the RFCs updated by this document.¶
This document updates RFC2328, RFC5340, RFC4222, RFC4811, RFC5243, RFC5614, and RFC5838.¶
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 https://datatracker.ietf.org/drafts/current/.¶
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This Internet-Draft will expire on 26 November 2023.¶
Copyright Notice
Copyright (c) 2023 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 (https://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 Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License.¶
1. Introduction
This document updates some OSPF terminology to be in line with inclusive language used in the industry. The IETF has designated US National Institute of Standards and Technology (NIST) "Guidance for NIST Staff on Using Inclusive Language in Documentary Standards" [NISTIR8366] for its inclusive language guidelines. It is intended that all future OSPF documents use this revised terminology even when they reference the RFCs updated by this document.¶
This document updates [RFC2328], [RFC5340], [RFC4222], [RFC4811], [RFC5243], [RFC5614], and [RFC5838].¶
2. Update to RFC2328
The base OSPFv2 specification [RFC2328] defines the synchronization of databases as two routers forming a "master/slave relationship". All instances of these terms are replaced by Leader/Follower, respectively.¶
The Master (MS) bit in the database description packet is renamed the Leader (L) bit.¶
The operation of OSPFv2 is not modified. The Leader/Follower terminology and Leader (L) Bit definition changes impact the following sections: 7.2 "The Synchronization of Databases", 10 "The Neighbor Data Structures", 10.1 "Neighbor states", 10.2 "Events causing neighbor state changes", 10.3 "The Neighbor state machine", 10.6 "Receiving Database Description Packets", 10.8 "Sending Database Description Packets", 10.10 "An Example", and A.3.3 "The Database Description packet".¶
3. Update to RFC5340
The base OSPFv3 specification [RFC5340] defines the database description process between two routers as one being "designated to be the master and the other is the slave". All instances of these terms are replaced by Leader/Follower, respectively.¶
The Master/Slave (MS) bit in the database description packet is renamed the Leader (L) bit.¶
The operation of OSPFv3 is not modified. The Leader/Follower terminology and Leader (L) Bit definition changes impact section A.3.3 "The Database Description packet".¶
4. Update to RFC4222
This Best Current Practice (BCP) document describes "Prioritized Treatment of Specific OSPF Version 2 Packets and Congestion Avoidance" [RFC4222]. There is an example OSFPv2 packet sequence in Appendix C, (2), that refers to the "slave" in a database exchange. This reference will be renamed to "Follower".¶
5. Update to RFC4811
This Experimental document specifies "OSPF Out-of-Band Link State Database (LSDB) Resynchronization" [RFC4811]. Section 2.4 includes a Database Description packet (Figure 2) and a description of the attendant encoding changes for Out-of-Band Resynchronization. In the figure and the description, all instances of MS when referring to the Database Description packet bit are renamed to "L". There is also a reference to "Master" in this section that is renamed to "Leader".¶
6. Update to RFC5243
This Informational document describes an "OSPF Database Exchange Summary List Optimization" [RFC5243]. The Introduction, Section 1, references "Master or Slave". This will be replaced by "Leader or Follower". Section 3.0 includes an example of the optimized database exchange. In this example, all instances of "Master" will be renamed to "Leader" and all instances of "Slave" will be renamed to "Follower".¶
7. Update to RFC5614
This Experimental document specifies the "Mobile Ad Hoc Network (MANET) Extension of OSPF Using Connected Dominating Set (CDS) Flooding" [RFC5614]. "Changes to the Neighbor State Machine", Section 7.2 contains modifications to the neighbor state machine updated from [RFC2328]. In this transition to "2-way" state, all instances of "Master" are renamed to "Leader" and all instances of "Slave" are renamed to "Follower". Additionally, instances of "MS" in reference to the Database Description packet bit are renamed to "L". Additionally, in "Receiving Database Description Packets, Section 7.5, the parenthentical "master or slave" is replaced by "Leader or Follower".¶
8. Update to RFC5838
This Standards Track document specifies the "Support of Address Families in OSPFv3" [RFC5838]. "Database Description Maximum Transmission Unit (MTU) Specification for Non-IPv6 AFs", Section 2.7 contains a Database Description packet change figure which include the "MS" bit. In this figure, the "MS" field will be renamed to "L" field.¶
Additionally, in Section 2.4.,first paragraph, "Changes to the Hello Packet Processing", the text is updated to remove the non-inclusive terms pertaining to unreachability handling as follows:¶
When an OSPFv3 router does not support this specification and an interface is configured with the Instance ID corresponding to a IPv4 AF, packets could be routed toward this interface and dropped. This could happen due to misconfiguration or a router software downgrade. Packet reception and dropping on an interface not configured with the packet AF. For example, an IPv4 packet could be received on an interface not supporting IPv4 since a router that doesn't support this specification can still include the interface in an SPF-calculated path as long as it establishes adjacencies using the Instance ID corresponding to the IPv4 AF. Note that OSPPFv3 Router-LSAs and Network-LSAs are AF-agnostic.¶
9. Acknowledgements
Thanks to Dhruv Dhody, Adrian Farrel, Barry Leiba, and Erik Kline for review and comments.¶
10. IANA Considerations
IANA is requested to rename bit 0x01 in the "Database Description (DD) Packet Flags" registry to "Leader (L-bit)" and to add a reference to this document.¶
11. Security Considerations
This document updates the terminology used in OSPF RFCs without any modification to the specifications of the protocol. As such, the security characteristics of OSPF do not change.¶
12. References
12.1. Normative References
- [RFC2328]
- Moy, J., "OSPF Version 2", STD 54, RFC 2328, DOI 10.17487/RFC2328, , <https://www.rfc-editor.org/info/rfc2328>.
- [RFC4222]
- Choudhury, G., Ed., "Prioritized Treatment of Specific OSPF Version 2 Packets and Congestion Avoidance", BCP 112, RFC 4222, DOI 10.17487/RFC4222, , <https://www.rfc-editor.org/info/rfc4222>.
- [RFC4811]
- Nguyen, L., Roy, A., and A. Zinin, "OSPF Out-of-Band Link State Database (LSDB) Resynchronization", RFC 4811, DOI 10.17487/RFC4811, , <https://www.rfc-editor.org/info/rfc4811>.
- [RFC5243]
- Ogier, R., "OSPF Database Exchange Summary List Optimization", RFC 5243, DOI 10.17487/RFC5243, , <https://www.rfc-editor.org/info/rfc5243>.
- [RFC5340]
- Coltun, R., Ferguson, D., Moy, J., and A. Lindem, "OSPF for IPv6", RFC 5340, DOI 10.17487/RFC5340, , <https://www.rfc-editor.org/info/rfc5340>.
- [RFC5614]
- Ogier, R. and P. Spagnolo, "Mobile Ad Hoc Network (MANET) Extension of OSPF Using Connected Dominating Set (CDS) Flooding", RFC 5614, DOI 10.17487/RFC5614, , <https://www.rfc-editor.org/info/rfc5614>.
- [RFC5838]
- Lindem, A., Ed., Mirtorabi, S., Roy, A., Barnes, M., and R. Aggarwal, "Support of Address Families in OSPFv3", RFC 5838, DOI 10.17487/RFC5838, , <https://www.rfc-editor.org/info/rfc5838>.
12.2. Informative References
- [NISTIR8366]
- "Guidance for NIST Staff on Using Inclusive Language in Documentary Standards, National Institute of Standards and Technology (NIST) Interagency or Internal Report 8366", NISTIR 8366, , <https://doi.org/10.6028/NIST.IR.8366>.