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A Lower-Effort Per-Hop Behavior (LE PHB) for Differentiated Services

Bless, Roland ORCID iD icon


This document specifies properties and characteristics of a Lower- Effort Per-Hop Behavior (LE PHB). The primary objective of this LE PHB is to protect Best-Effort (BE) traffic (packets forwarded with the default PHB) from LE traffic in congestion situations, i.e., when resources become scarce, BE traffic has precedence over LE traffic and may preempt it. Alternatively, packets forwarded by the LE PHB can be associated with a scavenger service class, i.e., they scavenge otherwise-unused resources only. There are numerous uses for this PHB, e.g., for background traffic of low precedence, such as bulk data transfers with low priority in time, non-time-critical backups, larger software updates, web search engines while gathering information from web servers and so on. This document recommends a standard Differentiated Services Code Point (DSCP) value for the LE PHB.

This specification obsoletes RFC 3662 and updates the DSCP recommended in RFCs 4594 and 8325 to use the DSCP assigned in this specification.

DOI: 10.17487/RFC8622
Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Publikationstyp Sonstiges
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 2070-1721
KITopen-ID: 1000098389
Verlag Internet Engineering Task Force (IETF)
Umfang 18 S.
Serie Request for Comments ; 8622
Vorab online veröffentlicht am 18.06.2019
Schlagwörter Lower Effort, Quality-of-Service, Differentiated Services
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