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:
Oct. 23, 2001
Filed:
Jul. 31, 1998
John H. Hughes, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
The invention provides a method and system for rapid access to one or more M-tries for responding to header information. The M-tries are stored in a plurality of memory banks, which are accessed in parallel to provide relatively greater access throughput. Parts of the M-tries that are (or are expected to be) frequently referenced are stored in multiple banks of the memory, to provide concurrent simultaneous access for those parts of the M-tries for parallel lookup of multiple routes. Regions of the multiple banks of the memory can be dynamically reallocated to provide improved access through-put to those multiple banks. The invention can be applied to routing decisions in response to destination addresses, to combinations of destination and source addresses (either for unicast or multicast routing), to access control decisions, to quality of service decisions, to accounting, and to other administrative processing in response to header information.