US 2008/0165705 A1 · Node, Network, Correspondence Relationship Generation Method and Frame Transfer Program

Abstract

Provided in the EoE technique are the node, the network, the correspondence relationship generating method and the frame transfer program to avoid traffic concentration on a specific link to improve throughput of the network as a whole by realizing optimum path transfer. The frame switching unit includes the frame analysis unit for analyzing an input frame kind and the like, the table search unit for obtaining frame rewriting information and output port information, the forwarding table storage unit for managing an output port of a frame, the MAC learning unit for executing MAC address learning, the EoE-MAC learning unit for learning a relationship between a MAC address and an EoE-MAC address, the STP control unit for executing processing of a spanning tree, and the like.

Claims74

Dependent claims

A node of a network for transferring a data frame sent from a transmission source terminal to a destination terminal, wherein each node in said network

holds a correspondence relationship between an identifier of a node to which said destination terminal is connected and an identifier of a spanning tree with the node connecting with said destination terminal as a route node,
adds the identifier of the node to which said destination terminal is connected and the identifier of said spanning tree to said data frame, and
with said spanning tree as a path, determines an output port of said data frame from said correspondence relationship.

A network including a plurality of nodes for transferring a data frame between a transmission source terminal and a destination terminal connected to said nodes, wherein each node in said network

holds a correspondence relationship between an identifier of a node to which said destination terminal is connected and an identifier of a spanning tree with the node connecting with said destination terminal as a route node,
adds the identifier of the node to which said destination terminal is connected and the identifier of said spanning tree to said data frame, and
on said spanning tree, determines an output port for the node to which said destination terminal is connected from said correspondence relationship based on port information of said spanning tree to transfer said data frame.

A method of generating a correspondence relationship of transfer information in a network for transferring a data frame sent from a transmission source terminal to a destination terminal, comprising the steps of:

adding an identifier of a node to which said destination terminal is connected and an identifier of a spanning tree with the node to which said destination terminal is connected as a route node to said data frame;
and
generating a correspondence relationship for determining an output port of said data frame to be transferred to the node to which said destination terminal is connected based on port information of said spanning tree, which is a correspondence relationship between an identifier of the node to which said destination terminal is connected and an identifier of the spanning tree with the node to which said destination terminal is connected as a route node to each node in said network.

A frame transfer program executed on a computer as a node of a network for transferring a data frame between a transmission source terminal and a destination terminal, which causes said node to execute the functions of:

holding a correspondence relationship between an identifier of a node to which said destination terminal is connected and an identifier of a spanning tree with the node connecting with said destination terminal as a route node;
adding the identifier of the node to which said destination terminal is connected and the identifier of said spanning tree to said data frame;
and
on said spanning tree, determining an output port for the node to which said destination terminal is connected from said correspondence relationship based on port information of said spanning tree to transfer said data frame.

1 more element

Dependencies are inferred from the claim text.

Node, Network, Correspondence Relationship Generation Method and Frame Transfer Program

Life of this patent

Node, Network, Correspondence Relationship Generation Method and Frame Transfer Program

Life of this patent

Abstract

Claims74