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A New Path Failure Detection Method for Multi-homed Transport Layer Protocol

Authors:
Sinda Boussen
Nabil Tabbane
Francine Krief
Sami Tabbane

Keywords: SCTP; multi-homing; RTO; path failure detection; WLAN.

Abstract:
Through its support for multi-homing, the Stream Control Transmission Protocol (SCTP) is a suitable solution to implement and manage user’s mobility by abstracting multiple physical paths into a single end-to-end association. In order to detect the primary path failure, SCTP uses a strategy defined in the RFC2960 and mainly based on a retransmission time out (RTO). When a number of retransmission failures occur on the primary path, switchover procedure is initiated which means that a new primary path will be selected among the available secondary paths. In this paper, we investigate the current switchover mechanism implemented in SCTP and detail some of its deficiencies which affect the use of SCTP in a WLAN environment. Then we propose a new path failure detection strategy designed to perform path management more efficiently in wireless environment, by preempting path failure and avoiding service interruption. Finally, we outline the testing of this new strategy in the context of a WLAN environment and the results are compared to those obtained when using the standard SCTP strategy.

Pages: 322 to 328

Copyright: Copyright (c) IARIA, 2011

Publication date: January 23, 2011

Published in: conference

ISSN: 2308-4413

ISBN: 978-1-61208-113-7

Location: St. Maarten, The Netherlands Antilles

Dates: from January 23, 2011 to January 28, 2011