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:
Aug. 24, 2010
Filed:
Aug. 18, 2003
Youichi Hidaka, Tokyo, JP;
Makoto Shibutani, Tokyo, JP;
Atsushi Iwata, Tokyo, JP;
Masaki Umayabashi, Tokyo, JP;
Nobuyuki Enomoto, Tokyo, JP;
Youichi Hidaka, Tokyo, JP;
Makoto Shibutani, Tokyo, JP;
Atsushi Iwata, Tokyo, JP;
Masaki Umayabashi, Tokyo, JP;
Nobuyuki Enomoto, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A node to relay the Ethernet frame provided with means to insert, in the relay process of the frame, two or more VLAN tags into the frame at a time and to remove the inserted VLAN tags wherein a TTL area to show the frame survival time is provided in the VLAN tag to be inserted to the frame so that whether the survival time has been elapsed or not is checked by the value in the TTL area and the frame after elapse of the survival time is discarded without being relayed.