Difference between revisions of "L4S-support"

From Nsnam
Jump to: navigation, search
(External modules)
Line 18: Line 18:
  
 
== External modules ==
 
== External modules ==
 +
 +
ns-3 has a framework for contributed code (extension modules maintained outside of the mainline).  The [https://apps.nsnam.org ns-3 App Store] is a site for some of these modules.
 +
 +
* [https://apps.nsnam.org/app/docsis-ns3/ DOCSIS models for Low Latency Docsis]
 +
 +
* [https://gitlab.com/tomhend/modules/l4s-evaluation L4S evaluation framework] comparable to [https://github.com/heistp/sce-l4s-bakeoff Pete Heist's testbed experiments]
 +
 +
* [https://apps.nsnam.org/app/quic/ QUIC] (does not have L4S, but is available for someone to try to add...)

Revision as of 22:08, 19 November 2020

Main Page - Current Development - Developer FAQ - Tools - Related Projects - Project Ideas - Summer Projects

Installation - Troubleshooting - User FAQ - HOWTOs - Samples - Models - Education - Contributed Code - Papers

This is a summary page for links to various code related to using ns-3 to study L4S. L4S is a proposed framework for deploying low-latency, low-loss, scalable congestion control in the Internet.

This page was last updated on November 19, 2020, in support of the IETF 109 ICCRG meeting.

L4S includes the following protocol components:

1) new ECN support in AQMs; in particular, the Dual Queue. The current RFC 3168 ECN delivers a Congestion Experience (CE) signal that has the same semantics as a packet drop. It can be thought of as a queue 'overload' signal, and endpoints are expected to react similarly to the detection of a packet drop. The new ECN support is intended to deliver more accurate ECN feedback (more granularity). The feedback is based on what is used for DCTCP (the 'ce_threshold' in Linux codel implementation can be used to generate this feedback).

2) a new ECN codepoint to differentiate L4S-aware traffic from flows using RFC 3168 ECN semantics. The IETF tsvwg decided to use the ECT(1) codepoint as an input signal for this purpose.

3) TCP Prague (a prototype congestion controller using the new feedback); the current version is based originally on DCTCP.

Support within current and future ns-3 releases

ns-3.32 (latest ns-3 release), contains support for the following:

External modules

ns-3 has a framework for contributed code (extension modules maintained outside of the mainline). The ns-3 App Store is a site for some of these modules.

  • QUIC (does not have L4S, but is available for someone to try to add...)