Facilitating topology change functionality when regional...

Details Facilitating topology change functionality when regional... Facilitating topology change functionality when regional...

2006-08-10

2009-10-27

Shah, Chirag (Department: 2419)

Multiplex communications

Network configuration determination

C370S256000, C370S401000

Reexamination Certificate

active

07609655

ABSTRACT:
A method for providing Topology Change functionality in a Local Area Network (LAN) comprises a plurality of operations. An operation is performed for determining that a Multiple Spanning Tree Instance (MSTI) Master port on a Bridge of a LAN has transitioned to Forwarding state from a corresponding Common Internal Spanning Tree Instance (CSTI) Root port state and an operation is performed for transitioning a Port Transmit state machine of the Bridge from an Idle state to a Transmit state for enabling issuance of a Topology Change (TC) BPDU message from the MSTI Master port. The operation of transitioning the Port Transmit state machine is performed in response to performing the operation of determining that the Multiple Spanning Tree Instance (MSTI) Master port has transitioned to Forwarding state.

REFERENCES:
patent: 6771610 (2004-08-01), Seaman
patent: 2001/0021177 (2001-09-01), Ishii

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