Bridge apparatus with entries reduced in filtering database and network using the same
First Claim
1. A bridge apparatus comprising:
- a filtering database which stores sets of a source address of a transmission source bridge apparatus from which a frame has been transmitted and one of ports of said bridge apparatus through which said frame is received, wherein said transmission source bridge apparatus address comprises a subnet ID, a node ID and a port ID, said subnet ID is an ID allocated to a subnet to which said transmission source bridge apparatus belongs, said node ID is an ID allocated to said transmission source bridge apparatus, and said port ID is an ID allocated to each of ports of said transmission source bridge apparatus; and
a switch section which is connected with said ports of said bride apparatus and refers to said filtering database based on a destination address of a transmission frame to determine one port of said bridge apparatus as an output port from which said transmission frame is outputted, when said transmission frame is received through another of said ports of said bridge apparatus.
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Accused Products
Abstract
A bridge apparatus includes a filtering database and a switch section. The filtering database stores sets of a source address of a transmission source bridge apparatus from which a frame has been transmitted and one of ports of the bridge apparatus through which the frame is received. The transmission source bridge apparatus address comprises a subnet ID, a node ID and a port ID, the subnet ID is an ID allocated to a subnet to which the transmission source bridge apparatus belongs, and the node ID is an ID allocated to the transmission source bridge apparatus. The port ID is an ID allocated to each of ports of the transmission source bridge apparatus. The switch section is connected with the ports of the bride apparatus and refers to the filtering database based on a destination address of a transmission frame to determine one port of the bridge apparatus as an output port from which the transmission frame is outputted, when the transmission frame is received through another of the ports of the bridge apparatus.
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Citations
15 Claims
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1. A bridge apparatus comprising:
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a filtering database which stores sets of a source address of a transmission source bridge apparatus from which a frame has been transmitted and one of ports of said bridge apparatus through which said frame is received, wherein said transmission source bridge apparatus address comprises a subnet ID, a node ID and a port ID, said subnet ID is an ID allocated to a subnet to which said transmission source bridge apparatus belongs, said node ID is an ID allocated to said transmission source bridge apparatus, and said port ID is an ID allocated to each of ports of said transmission source bridge apparatus; and
a switch section which is connected with said ports of said bride apparatus and refers to said filtering database based on a destination address of a transmission frame to determine one port of said bridge apparatus as an output port from which said transmission frame is outputted, when said transmission frame is received through another of said ports of said bridge apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A network comprising a plurality of said bridge apparatuses, wherein said network is divided into a plurality of subnets, and each of said plurality of bridge apparatuses belongs to one or more of said plurality of subnets, and
wherein each of said plurality of bridge apparatuses comprises: -
a filtering database which stores sets of a source address of a transmission source bridge apparatus from which a frame has been transmitted and one of ports of said bridge apparatus through which said frame is received, wherein said transmission source bridge apparatus address comprises a subnet ID, a node ID and a port ID, said subnet ID is an ID allocated to a subnet to which said transmission source bridge apparatus belongs, said node ID is an ID allocated to said transmission source bridge apparatus, and said port ID is an ID allocated to each of ports of said transmission source bridge apparatus; and
a switch section which is connected with said ports of said bride apparatus and refers to said filtering database based on a destination address of a transmission frame to determine one port of said bridge apparatus as an output port from which said transmission frame is outputted, when said transmission frame is received through another of said ports of said bridge apparatus. - View Dependent Claims (10, 11, 13, 14, 15)
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12. A method of transferring a frame in a specific bridge apparatus of a network based on a filtering database, comprising the steps of:
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dividing a network of a plurality of bridge apparatuses into a plurality of subnets, to allocate a subnet ID to each of said plurality of subnets, each of said plurality of bridge apparatuses being allocated with a node ID and having a plurality of ports, each of which is allocated with a port ID;
in said specific bridge apparatus, checking whether a source address of a frame belongs to the subnet to which said specific bridge apparatus belongs, when said frame is received through one of said ports of said specific bridge apparatus as an output port; and
in said specific bridge apparatus, registering said subnet ID as said address and said output port on said filtering database when said source address does not belong to the subnet to which said specific bridge apparatus belongs.
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Specification