P2PSIP N. Zong
Internet-Draft X. Jiang
Intended status: Standards Track R. Even
Expires: November 08, 2013 Huawei Technologies
Y. Zhang
May 07, 2013
An extension to RELOAD to support Direct Response Routing
draft-ietf-p2psip-drr-06
Abstract
This document proposes an optional extension to RELOAD to support
direct response routing mode. RELOAD recommends symmetric recursive
routing for routing messages. The new optional extension provides a
shorter route for responses reducing the overhead on intermediate
peers and describes the potential cases where this extension can be
used.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 08, 2013.
Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
Zong, et al. Expires November 08, 2013 [Page 1]
Internet-Draft P2PSIP DRR May 2013
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
This document may contain material from IETF Documents or IETF
Contributions published or made publicly available before November
10, 2008. The person(s) controlling the copyright in some of this
material may not have granted the IETF Trust the right to allow
modifications of such material outside the IETF Standards Process.
Without obtaining an adequate license from the person(s) controlling
the copyright in such materials, this document may not be modified
outside the IETF Standards Process, and derivative works of it may
not be created outside the IETF Standards Process, except to format
it for publication as an RFC or to translate it into languages other
than English.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. SRR and DRR . . . . . . . . . . . . . . . . . . . . . . . 4
3.1.1. Symmetric Recursive Routing (SRR) . . . . . . . . . . 4
3.1.2. Direct Response Routing (DRR) . . . . . . . . . . . . 5
3.2. Scenarios where DRR can be used . . . . . . . . . . . . . 6
3.2.1. Managed or closed P2P systems . . . . . . . . . . . . 6
3.2.2. Wireless scenarios . . . . . . . . . . . . . . . . . 6
4. Relationship between SRR and DRR . . . . . . . . . . . . . . 7
4.1. How DRR works . . . . . . . . . . . . . . . . . . . . . . 7
4.2. How SRR and DRR work together . . . . . . . . . . . . . . 7
5. Comparison on cost of SRR and DRR . . . . . . . . . . . . . . 7
5.1. Closed or managed networks . . . . . . . . . . . . . . . 7
5.2. Open networks . . . . . . . . . . . . . . . . . . . . . . 9
6. DRR extensions to RELOAD . . . . . . . . . . . . . . . . . . 9
6.1. Basic requirements . . . . . . . . . . . . . . . . . . . 9
6.2. Modification to RELOAD message structure . . . . . . . . 9
6.2.1. State-keeping flag . . . . . . . . . . . . . . . . . 10
6.2.2. Extensive routing mode . . . . . . . . . . . . . . . 10
6.3. Creating a request . . . . . . . . . . . . . . . . . . . 11
6.3.1. Creating a request for DRR . . . . . . . . . . . . . 11
datatracker.ietf.org