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A Link Protection Scheme with a Backup Link Spanning Tree for Provider Backbone Bridged Networks and Implementation  

Nam, Wie-Jung (Korea Aerospace University)
Lee, Hyun-Joo (Korea Aerospace University)
Yoon, Chong-Ho (Korea Aerospace University)
Hong, Won-Taek (Korea Institute of Science and Technology Information)
Moon, Jeong-Hoon (Korea Institute of Science and Technology Information)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.1, 2010 , pp. 58-68 More about this Journal
Abstract
In this paper, we propose an efficient link protection switching scheme for provider backbone bridge systems with a spanning tree for backup links exclusively, and evaluate its performance. The proposed scheme offers guaranteed QoS flows even when a link fault occurrs in the primary link by flooding the flows over the profiled spanning tree. The flooding mechanism over the spanning tree can also provide low latency and remove the loopback flows. We also derive the efficiency of bandwidth usage for the normal flows and the number of lost frames during the link restoration. For evaluating its feasibility, we implement a prototype of PBB-TE systems based on the Linux bridge codes, which can support both link protection switching capability with CCM and MAC-in-MAC encapsulation. A related protocol analyzer is also developed. One can see that the proposed scheme and the prototype can be useful for developing carrier class Ethernet systems based on PBB-TE.
Keywords
Provider Backbone Bridge; Traffic Engineering; Link Protection; Connection Fault Management;
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  • Reference
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