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US 2008/0186981 A1Published application
Switching hub and lan system
AssigneeHitachi Cable, Ltd.
InventorsKoichiro SETO, Akihiro SEKIGUCHI
Life of this patent
Estimating the term…
Abstract
A switching hub is provided with a control unit for setting, for a port, a VLAN-ID comprising a subgroup ID of a subgroup constituting a VLAN, and a sub-ID of a group contained in the subgroup ID, and a switching processing unit for relaying a frame, which contains the VLAN-ID, via the port, which matches the VLAN-ID
Claims9
A switching hub, comprising:
- a control unit for setting, for a port, a VLAN-ID comprising a subgroup ID of a subgroup constituting a VLAN, and a sub-ID of a group contained in the subgroup ID;
- and
- a switching processing unit for relaying a frame, which contains the VLAN-ID, via the port, which matches the VLAN-ID.
A switching hub, comprising:
- a port for transmitting/receiving a frame;
- a port processing unit comprising a receive port processing unit for selectively adding a tag to the frame based on the presence/absence of a VLAN tag of the received frame, and on a set VLAN-ID of the receive port, and a transmit port processing unit for selectively deleting a tag from the frame based on a set VLAN-ID of the transmit port;
- a filter processing unit for referencing the VLAN tag of the frame to, when a VLAN-ID contained in the VLAN tag of the frame matches the set VLAN-ID of the port, permit forwarding of the frame, and when a VLAN-ID contained in the VLAN tag of the frame does not match the set VLAN-ID of the port, discard the frame;
- a switching processing unit for referencing registered information based on retrieval from a FDB (Forwarding Data Base) to determine a relay of the frame added with the VLAN tag containing the VLAN-ID;
- and
- a control unit for setting the VLAN-ID to contain a subgroup ID of a subgroup contained in a VLAN and a sub-ID of a group contained in the subgroup ID.
3 more elements
A switching hub, comprising:
- a port for transmitting/receiving a frame, and comprising a VLAN-ID for defining a subgroup and its order in a VLAN;
- a port processing unit comprising a receive port processing unit for selectively adding a tag to the frame based on the presence/absence of a VLAN tag of the received frame, and on a set VLAN-ID of the receive port, and a transmit port processing unit for selectively deleting a tag from the frame based on a set VLAN-ID of the transmit port;
- a filter processing unit for referencing the VLAN tag of the frame to, when a VLAN-ID contained in the VLAN tag of the frame matches the set VLAN-ID of the port, permit forwarding of the frame, and when a VLAN-ID contained in the VLAN tag of the frame does not match the set VLAN-ID of the port, discard the frame;
- a switching processing unit for referencing registered information based on retrieval of a set of the VLAN-ID information contained in the frame and a source MAC (Media Access Control) address of the frame, from a FDB (Forwarding Data Base), to determine a relay of the frame added with the VLAN tag containing the VLAN-ID;
- and
- a control unit for setting the VLAN-ID to contain a subgroup ID of a subgroup contained in a VLAN and a sub-ID of a group contained in the subgroup ID.
3 more elements
A VLAN system, comprising:
- a switching hub comprising a control unit for setting, for a port, a VLAN-ID comprising a subgroup ID of a subgroup constituting a VLAN, and a sub-ID of a group contained in the subgroup ID;
- and a switching processing unit for relaying a frame, which contains the VLAN-ID, via the port, which matches the VLAN-ID,
- wherein the VLAN system receives a frame relayed to the switching hub from a transmitting source constituting the VLAN at the port set to the VLAN-ID, and relays it from the switching hub to a destination via the port set to the VLAN-ID.
Dependencies are inferred from the claim text.