PW Congestion Considerations

Document Type Replaced Internet-Draft (pwe3 WG)
Last updated 2012-10-15 (latest revision 2012-07-15)
Replaced by draft-ietf-pwe3-congcons
Stream IETF
Intended RFC status (None)
Expired & archived
plain text pdf html bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-pwe3-congcons
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Pseudowires (PWs) have become a common mechanism for tunneling traffic, and may be found competing for network resources both with other PWs and with non-PW traffic, such as TCP/IP flows. It is thus worthwhile specifying under what conditions such competition is safe, i.e., the PW traffic does not significantly harm other traffic or contribute more than it should to congestion. We conclude that PWs transporting responsive traffic behave as desired without the need for additional mechanisms. For inelastic PWs (such as TDM PWs) we derive a bound under which such PWs consume no more network capacity than a TCP flow.


Yaakov Stein (
Bob Briscoe (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)