NDLI: A two phase multicast routing algorithm in self-routing multistage networks

Content Provider	IEEE Xplore Digital Library
Author	Raghavendra, C.S. Xiaoqiang Chen Kumar, V.P.
Copyright Year	1995
Description	Author affiliation: Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA (Raghavendra, C.S.)
Abstract	We present an improved multicast routing algorithm for self-routing multistage networks with circulating data. This multicast routing algorithm uses two passes through the network, and is based on the cube concept where a cube consists of a group of outlets reachable in one pass through the multistage network. A given multicast connection set, consisting of D destinations, is decomposed into a set of m cubes so that each cube can be routed in one pass through the multistage network. In the first phase of the multicast routing algorithm, data is routed from the source to m consecutive outputs. These m outlets are then used as inputs in the second phase for routing to the destination cubes. When the cubes satisfy a certain condition, we show a method used to map each of the m consecutive inputs to route data to one of the cubes of the multicast connection. When some cubes conflict and do not satisfy this condition, we can still route in two passes by expanding a few larger cubes into smaller cubes in order to satisfy this condition for routability. We evaluate the performance of this two-phase algorithms in terms of number of internal links used via extensive simulation. This multicast algorithm using the cubes performs significantly better than the simple multicast algorithm which routes to D consecutive outputs in the first phase and to final destinations in the second phase.
Starting Page	1612
Ending Page	1618
File Size	664175
Page Count	7
File Format	PDF
ISBN	0780324862
DOI	10.1109/ICC.1995.524474
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Routing Multicast algorithms Intelligent networks Switches Sorting B-ISDN Asynchronous transfer mode Costs Broadcasting Logic
Content Type	Text
Resource Type	Article

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