Internet-Draft OSPF Terminology July 2022
Fox, et al. Expires 10 January 2023 [Page]
Workgroup:
Link State Routing
Internet-Draft:
draft-ietf-lsr-ospf-terminology-03
Updates:
2328 5340 4222 4811 5243 5614 5838 (if approved)
Published:
Intended Status:
Standards Track
Expires:
Authors:
M. Fox
IBM
A. Lindem
Cisco Systems
A. Retana
Futurewei Technologies, Inc.

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 National Institute of Standards and Technology (NIST) "Guidance for NIST Staff on Using Inclusive Language in Documentary Standards" for its inclusive language guidelines.

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/.

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 10 January 2023.

1. Introduction

This document updates some OSPF terminology to be in line with inclusive language used in the industry. The IETF has designated National Institute of Standards and Technology (NIST) "Guidance for NIST Staff on Using Inclusive Language in Documentary Standards" [NISTIR8366] for its inclusive language guidelines.

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 froming 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", 10.6 "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 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 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 rename 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". Addiitionally, 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, e.g., IPv4 is
   possible because a router that doesn't support this specification
   can still be included in the  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.
Figure 1: RFC 5838, Section 2.4 - Updated First Paragraph

9. Acknowledgements

Thanks to Dhruv Dhody and Adrian Farrel 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>.

Authors' Addresses

Mike Fox
IBM
3039 E Cornwallis Rd
Research Triangle Park, NC 27709
United States of America
Acee Lindem
Cisco Systems
301 Midenhall Way
Cary, NC 27513
United States of America
Alvaro Retana
Futurewei Technologies, Inc.
2330 Central Expressway
Santa Clara, CA 95050
United States of America