%% You should probably cite rfc6627 instead of this I-D. @techreport{ietf-pcn-encoding-comparison-09, number = {draft-ietf-pcn-encoding-comparison-09}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-pcn-encoding-comparison/09/}, author = {Georgios Karagiannis and Kwok Ho Chan and Toby Moncaster and Michael Menth and Philip Eardley and Bob Briscoe}, title = {{Overview of Pre-Congestion Notification Encoding}}, pagetotal = 20, year = 2012, month = mar, day = 8, abstract = {The objective of Pre-Congestion Notification (PCN) is to protect the quality of service (QoS) of inelastic flows within a Diffserv domain. On every link in the PCN-domain, the overall rate of PCN-traffic is metered, and PCN-packets are appropriately marked when certain configured rates are exceeded. Egress nodes provide decision points with information about the PCN-marks of PCN-packets that allows them to take decisions about whether to admit or block a new flow request, and to terminate some already admitted flows during serious \textbackslash{}\%pre-congestion. The PCN working group explored a number of approaches for encoding this pre-congestion information into the IP header. This document provides details of those approaches along with an explanation of the constraints that apply to any solution. This document is not an Internet Standards Track specification; it is published for informational purposes.}, }