Method for obtaining the best connectivity achievable within virtual local area networks
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United States of America Patent
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Jul 21, 2009
Grant Date -
Jul 7, 2005
app pub date -
Dec 20, 2003
filing date -
Dec 20, 2003
priority date (Note) -
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Abstract
A method is described herein for configuring a computer network managed by the IEEE Std 802.1s™-2002 MSTP standard or any other equivalent standard such as IEEE Std 802.1Q™-2003 in a fully- or semi-automatic manner such that: (1) if at all possible and in the case of a failure in the MSTP-based computer network affecting a Multiple Spanning Tree Instance (MSTI), MSTP reestablishes connectivity in that MSTI by preferably activating links whose activation ensures that the connectivity within a Virtual Local Area Network (VLAN) mapped onto and associated with that MSTI is not lost; and (2) a VLAN is mapped onto a MSTI whose active topology covers the topology of this VLAN, this being ensured by setting up that MSTI depending on the desired VLAN topology.
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