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Proceedings Paper

A cost-effective and fast recovery mechanism for multi-ring interconnection networks based on RPR
Author(s): Yichun Zhan; Meng Ji; Shaohua Yu
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Paper Abstract

Resilient Packet Ring (RPR) has been standardized in the IEEE 802.17 working group. In multi-ring networks, similarly with other ring-based technology, intra-ring traffic demand is protected against single node and span failures within 50 ms by the "steering" and "wrapping" protection. Inter-ring traffic demand, however, is susceptible to failures at nodes or links where the traffic demand transits from one ring to another. Normally, the survivability of interconnecting node or link failure has to be provided by other technologies, such as MPLS and Spanning Tree Protocol. Unfortunately, most schemes cannot provide a cost-effective solution with guaranteeing the restoration within the 50 ms timeframe. In this paper we proposed a cost-effective and fast Recovery Mechanism for Multi-ring Interconnection Networks Based on RPR. Differential from Spanning Tree Protocol (STP) and other protection technologies, this mechanism has the ability of sub-50ms protection provisioning and scalability based on the bridging function in RPR. Particular with enhanced bridging support, this mechanism can provide efficient bandwidth spatial reuse on multi-ring RPR networks. The proposed novel mechanism has been implemented on our 10Gbps network processor (NP) based multi-service provisioning platform. All experimental results presented in this paper come from actual testing on the network test bed and show that the all the inter-ring traffic are given the sub-50ms recovery guarantee as intra-ring traffic in normal case.

Paper Details

Date Published: 5 December 2005
PDF: 10 pages
Proc. SPIE 6022, Network Architectures, Management, and Applications III, 60222D (5 December 2005); doi: 10.1117/12.635951
Show Author Affiliations
Yichun Zhan, Huazhong Univ. of Science and Technologies (China)
Meng Ji, Huazhong Univ. of Science and Technologies (China)
Shaohua Yu, Wuhan Research Institute of Posts and Telecommunications (China)

Published in SPIE Proceedings Vol. 6022:
Network Architectures, Management, and Applications III
Kwok-wai Cheung; Gee-Kung Chang; Guangcheng Li; Ken-Ichi Sato, Editor(s)

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