The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 2022
Filed:
Jun. 29, 2020
Lenovo Enterprise Solutions (Singapore) Pte. Ltd., New Tech Park, SG;
Corneliu-Ilie Calciu, Bucharest, RO;
Radu M. Iorga, Bucharest, RO;
George-Andrei Stanescu, Ilfov, RO;
Bogdan Chifor, Nojorid, RO;
Lenovo Enterprise Solutions (Singapore) PTE. LTD., New Tech Park, SG;
Abstract
An apparatus for optimization for Spanning Tree Protocol ('STP') data network includes an egress filter setting circuit in a first network node that sets an egress filter to discard data packets at an egress port of the first network node connected to a second network node in response to receiving an egress filter bridge protocol data unit ('BPDU') message from the second network node indicating that a link between the first network node and the second network node is a redundant link. The network nodes are layer-2 STP bridges. The apparatus includes, in the first network node, an egress filter timeout circuit that resets a timer in response to receiving the egress filter BPDU message, and a filter clear circuit that clears the egress filter to allow data packets to be sent from the egress port to the second network node in response to the timer reaching a timeout.