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:
Dec. 01, 2015
Filed:
Mar. 22, 2011
Syuuhei Yamaguchi, Tokyo, JP;
Syuuhei Yamaguchi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a method and a configuration for forming a processing rule, number of entries for packet processing, maintained by a forwarding node, may be decreased. The processing rule includes processing contents and information to become a matching key to identify a packet to be applied with the processing contents. An aggregation tree is used which has a depth corresponding to a length of information that becomes matching key in the processing rule. A plurality of nodes branched from a root of the aggregation tree and levels of nodes represent value of the matching key and mask length, respectively. The processing rule or the policy is registrable in each of the individual nodes. The policy is registered in a relevant node of the aggregation tree. For each received packet, processing contents and ad-hoc matching key to identify the packet to be applied with the processing contents are determined by having reference to the policy. Then, based on the ad-hoc matching key, the aggregation tree is traced from its root downwards to find a node beyond which along the depth of the tree there is no policy registered. The processing rule having the node as the matching key is then formed.