RFC 9893 - Dynamic Link Exchange Protocol (DLEP) Credit-Based Flow Control Messages and Data Items

• Status: Proposed Standard
• Published: January 2026
• Stream: IETF
• Errata: RFC Editor Errata

Abstract

This document defines DLEP messages and Data Items for credit-based flow control, including credit window initialization, association, grant, status, and request semantics.

Contents

• 1. Introduction
• 1.1. Key Words
• 2. Credit Window Flow Control
• 2.1. Data Plane Considerations
• 2.2. Credit Window Messages
• 2.2.1. Credit Control Message
• 2.2.2. Credit Control Response Message
• 2.3. Data Items for the Control of Credit Windows
• 2.3.1. Credit Window Initialization
• 2.3.2. Credit Window Association
• 2.3.3. Credit Window Grant
• 2.3.4. Credit Window Status
• 2.3.5. Credit Window Request
• 2.4. Management Considerations
• 3. Compatibility
• 4. Security Considerations
• 5. IANA Considerations
• 5.1. Message Type Values
• 5.2. Data Item Values
• 6. References
• 6.1. Normative References
• 6.2. Informative References
• Appendix A. Example DLEP Credit Flow Control and Traffic Classification Data Item Exchange
• Acknowledgments
• Authors' Addresses

Related Resources

• Official Text: RFC 9893
• Official Page: RFC 9893 DataTracker
• Errata: RFC Editor Errata