Unit3b - Unit 3.6 Supplementary Notes Spanning Tree...

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Unit 3.6 Supplementary Notes: Spanning Tree
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Interconnection without Backbone Not recommended for two reasons: 1. single point of failure at Computer Science hub 2. all traffic between EE and SE must go through CS segment
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Backbone Configuration Recommended !
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Loops in a Network ± Loops may be created to increase reliability. ± Problem in self learning: ² Each frame from the flooding triggers the next flood of frames, causing a broadcast storm and bringing down the network
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Spanning Tree Solution: organize bridges/switches in a spanning tree by disabling subset of interfaces Example: Disabled
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How to construct a Spanning Tree? ± Procedure: 1. The bridge with the smallest id is chosen as the root bridge of the spanning tree. 2. For each bridge (except the root bridge), the port with the least-cost path to the root bridge is chosen as the root port . In case of ties, the one with the lowest port ID is chosen. 3.
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This note was uploaded on 05/01/2011 for the course ELECTRICAL EE3015 taught by Professor Albertsun during the Spring '11 term at City University of Hong Kong.

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Unit3b - Unit 3.6 Supplementary Notes Spanning Tree...

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