NDLI: Efficient and Lossless Multicast Support in Large Routers

Content Provider	IEEE Xplore Digital Library
Author	Yufeng Li Julong Lan Han Qiu Peng Yi Fengsen Deng
Copyright Year	2006
Description	Author affiliation: Technol. Res. Center, Nat. Digital Switching Syst. Eng., Zhengzhou (Yufeng Li; Julong Lan; Han Qiu; Peng Yi)
Abstract	Today, multicast-capable routers generally handle multicast traffic by appending each cell a local multicast output label (LMOL) containing a bitmap with as many bits as output ports, so as to identify the ports to which a copy of the cell has to be transferred. However, this approach is unfeasible for the very large IP routers having 128 output ports or more, because the LMOL length would rise above 16 bytes, thus the bandwidth wasted for transmitting LMOL will be intolerable for small cells. Recently, there come forth many approaches using various lossy compression algorithms to shorten the LMOL, hence to save bandwidth and improve efficiency. In this paper, we aim to offer both lossless replication and high efficiency for multicast traffic traversing in large routers, and present a scheme characterized by dual lookups and three-stage replications to achieve the goals. Experiment results show that the scheme can support multicast replication with no loss happening for large IP routers with as many as 128 x 128 output ports, in condition that the internal bus width being a normal value of 128, meanwhile, the scheme can also provide the most efficient transmission and replication.
Starting Page	1
Ending Page	5
File Size	5426445
Page Count	5
File Format	PDF
ISBN	1424408008
DOI	10.1109/ICCT.2006.341809
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-27
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bandwidth Compression algorithms Multicast algorithms Switches Switching systems Systems engineering and theory Propagation losses Heuristic algorithms Hardware Throughput
Content Type	Text
Resource Type	Article

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