Invention Grant
- Patent Title: Bridged LAN and communication node therefor
- Patent Title (中): 桥接局域网和通信节点
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Application No.: US11780070Application Date: 2007-07-19
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Publication No.: US07710985B2Publication Date: 2010-05-04
- Inventor: Daiki Nozue , Hiroaki Miyata
- Applicant: Daiki Nozue , Hiroaki Miyata
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2006-330992 20061207
- Main IPC: H04L12/28
- IPC: H04L12/28

Abstract:
A spanning tree is formed for each of MST (Multiple Spanning Tree Protocol) instances defined by a VLAN ID and a COS value. Each terminal apparatus specifies the COS value corresponding to the TCP/UDP port number of a Ethernet frame to be transmitted, based on a conversion table indicating the correspondence of a TCP/UDP port number to a COS value and sets the specified COS value to the header of the Ethernet frame. Each of bridges in the transit network specifies the MST instance identifier of a received frame based on a conversion table indicating the correspondence of the MST instance identifier to the combination of a VLAN ID and a COS value and forwards the received frame in accordance with the spanning tree having the specified MST instance.
Public/Granted literature
- US20080137557A1 BRIDGED LAN AND COMMUNICATION NODE THEREFOR Public/Granted day:2008-06-12
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