Ring network
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsTaiki Shinohara, Hirohisa Kusano
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Abstract
According to one embodiment, a ring network includes a plurality of communication devices. Each of the plurality of communication devices has first and second Ethernet interfaces respectively connected to adjacent communication devices on one side and on the other side in the ring, and a host device that can transmit and receive data to and from other communication devices on the ring network using the first and second Ethernet interfaces. The plurality of communication devices includes a first communication device that transmits, in a first time period, a first frame from its second Ethernet interface in a clockwise direction and transmits a second frame from its first Ethernet interface in a counterclockwise direction.
Claims24
A ring network, comprising:
- a plurality of communication devices, each of the plurality of communication devices including:
- a first Ethernet interface connected to an adjacent communication device on one side,
- a second Ethernet interface connected to an adjacent communication device on the other side, and
- a host device that can transmit and receive data to and from other communication devices in the plurality of communication devices using the first Ethernet interface and the second Ethernet interface, wherein
- a first communication device in the plurality of communication devices is configured to transmit, in a first time period, a first frame from its second Ethernet interface in a clockwise direction and a second frame from its first Ethernet interface in a counterclockwise direction;
- and
- a second communication device of the plurality of communication devices is configured to:
- upon receiving the first frame generated by the first communication device, add a MAC address of its first Ethernet interface, a reception time stamp of the first frame, a MAC address of its second Ethernet interface, and a transmission time stamp of the first frame to a payload of the first frame, and then transmit the first frame to the adjacent communication device in the clockwise direction, and
- upon receiving the second frame generated by the first communication device, add the MAC address of its second Ethernet interface, a reception time stamp of the second frame, the MAC address of its first Ethernet interface, and a transmission time stamp of the second frame to a payload of the second frame, and then transmit the second frame to the adjacent communication device in the counterclockwise direction.
A ring network, comprising:
- a plurality of communication devices, each of the plurality of communication devices including:
- a first Ethernet interface connected to an adjacent communication device on one side,
- a second Ethernet interface connected to an adjacent communication device on the other side, and
- a host device that can transmit and receive data to and from other communication devices in the plurality of communication devices using the first Ethernet interface and the second Ethernet interface, wherein
- a first communication device in the plurality of communication devices is configured to transmit, in a first time period, a first frame from its second Ethernet interface in a clockwise direction and a second frame from its first Ethernet interface in a counterclockwise direction,
- after each of the plurality of communication devices has an opportunity to transmit a first frame addressed to its first Ethernet interface from its second Ethernet interface in the clockwise direction and to transmit a second frame addressed to its second Ethernet interface from its first Ethernet interface in the counterclockwise direction, the first communication device is configured to specify a location where a failure occurs based on a reception status of the first frame and the second frame generated by another communication device in the plurality of communication devices,
- the first communication device stores a route information table recording information regarding a frame transfer to the plurality of communication devices, except for itself, in the clockwise direction, and information regarding a frame transfer to the plurality of communication devices, except for itself, in the counterclockwise direction except for itself, and
- the host device in the first communication device updates the route information table based on the information in the payload of the first frame when received by the first Ethernet interface and the information in the payload of the second frame when received by the second Ethernet interface.
Dependencies are inferred from the claim text.