MPT Network Layer Multipath Library
draft-lencse-tsvwg-mpt-02
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2018-06-11
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Network Working Group G. Lencse
Internet Draft Budapest Univ. of Tech. and Econ.
Intended status: Experimental Sz. Szilagyi
Expires: December 2018 F. Fejes
University of Debrecen
M. Georgescu
RCS&RDS
June 11, 2018
MPT Network Layer Multipath Library
draft-lencse-tsvwg-mpt-02.txt
Abstract
Although several contemporary IT devices have multiple network
interfaces, communication sessions are restricted to use only one of
them at a time due to the design of the TCP/IP protocol stack: the
communication endpoint is identified by an IP address and a TCP or
UDP port number. The simultaneous use of these multiple interfaces
for a communication session would improve user experience through
higher throughput and improved resilience to network failures.
MPT is a network layer multipath solution, which provides a tunnel
over multiple paths using the GRE-in-UDP specification, thus being
different from both MPTCP and Huawei's GRE Tunnel Bonding Protocol.
MPT can also be used as a router, routing the packets among several
networks between the tunnel endpoints, thus establishing a multipath
site-to-site connection.
The version of tunnel IP and the version of path IP are independent
from each other, therefore MPT can also be used for IPv6 transition
purposes.
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), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet-
Drafts.
Lencse et al. Expires December 11, 2018 [Page 1]
Internet-Draft MPT Network Layer Multipath Library June 2018
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This Internet-Draft will expire on December 11, 2018.
Copyright Notice
Copyright (c) 2018 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
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Table of Contents
1. Introduction ................................................. 3
1.1. Design Assumptions ...................................... 3
1.2. MPT in the Networking Stack ............................. 3
1.3. Terminology ............................................. 4
1.4. MPT Concept ............................................. 5
2. Conventions Used in this Document ............................ 6
3. Operation Overview ........................................... 6
4. MPT Control .................................................. 8
4.1. Configuration Information ............................... 8
4.1.1. General Information for the MPT Server ............. 8
4.1.2. Connection Specifications .......................... 9
4.2. MPT Configuration Commands ............................. 13
5. Possible Mappings of the Tunnel Traffic to Paths ............ 14
5.1. Per Packet Based Mapping ............................... 17
5.2. Flow Based Mapping ..................................... 18
5.3. Combined Mapping ....................................... 19
6. Packet Reordering ........................................... 19
Lencse et al. Expires December 11, 2018 [Page 2]
Internet-Draft MPT Network Layer Multipath Library June 2018
7. Why MPT is Considered Experimental? ......................... 20
7.1. Published Results ...................................... 21
7.1.1. MPT Concept and First Implementation .............. 21
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