A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Tunnel Congestion Exposure
Author(s) : Lei Zhu
Huabing Zhang
Xiangyang Gong
Filename : draft-zhang-tsvwg-tunnel-congestion-exposure-00.txt
Pages : 16
Date : 2012-10-15
Abstract:
At present, tunneling technology has been widely applied in VPN,
mobile communication network, IPv6 over IPv4, Mobile IP, multi-point
delivery, and other fields. In the E2E link, there may already have
been an effective congestion control mechanism, but we SHOULD also do
traffic management in the tunnel to improve the performance of the
entire network. Because of the particularity of the scenario of the
tunnel, the existing E2E traffic management mechanism cannot be
directly be deployed (e.g. VPN, IPv6 over IPv4 etc). In these
cases, this document focuses on how to expose the congestion while
the feedback mechanism is left for later study. This document
describes the problem of identifying congestion in a tunnel segment
of an end-to-end flow. A basic tunnel congestion exposure model is
then described, followed by three example scenarios which use the
basic model to derive tunnel congestion. Finally, a general solution
that can be applied to IP-in-IP tunnels is described.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-zhang-tsvwg-tunnel-congestion-exposure
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-zhang-tsvwg-tunnel-congestion-exposure-00
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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