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. 21, 2023
Filed:
Mar. 13, 2020
Adtran,inc., Huntsville, AL (US);
Thomas Frederick Detwiler, Huntsville, AL (US);
Cory Z. Zywno, Huntsville, AL (US);
Darrin L. Gieger, Pell City, AL (US);
Spencer R. Gass, Madison, AL (US);
Miriam Angela Nunnally, Madison, AL (US);
ADTRAN, Inc., Huntsville, AL (US);
Abstract
A filter for performing access control list (ACL) filtering may be used in place of highly-complex and resource-intensive TCAMs for access control. In this regard, the filter may be configured to compare packet header information to action-priority pairs stored in ACL tables. Each action-priority pair indicates at least one action to be performed for implementing a desired rule and a priority for that action. An access control action from an action-priority pair matching the header information may be performed in order to implement a desired access control rule for the received packet. If multiple action-priority pairs from the same table match the header information, then the priorities of the matching action-priority pairs may be compared to resolve the conflict. The circuitry of the filter is arranged such that exact-match searching can be performed on the ACL tables to reduce the complexity and cost of the filter.