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:
Nov. 29, 2022
Filed:
Oct. 26, 2020
Ashkan Sobhani, Kanata, CA;
Xingjun Chu, Ottawa, CA;
Ashkan Sobhani, Kanata, CA;
Xingjun Chu, Ottawa, CA;
HUAWEI TECHNOLOGIES CO. LTD., Shenzhen, CN;
Abstract
Methods and systems for network verification are described. An input binary decision diagram (BDD) is defined to represent an input header space to query for a network property of interest. The input BDD is provided as input to a device-level BDD representing a source device in a logical topology representing connections among devices of the network. Each device in the network is represented by a respective device-level BDD in the logical topology. An output BDD is calculated, representing an output header space outputted by a destination device in the logical topology. The output BDD is calculated by sequentially applying, to the input BDD, each device-level BDD in a logical path from the source device to the destination device. The output BDD is then reported, and the reported output BDD is compared with an expected output BDD, to verify the network property of interest.