RPR network system
AssigneeFujitsu Limited
InventorMasanori Hashimoto
Life of this patent
Estimating the term…
Abstract
A bridge node converts a MAC frame addressed to a station node into a RPR MAC frame and thus transmits it, and encapsulates a MAC frame addressed a station being located the outside of a ring and connected to other bridge node into the RPR MAC frame, and transmits it. The bridge node thereby receives a RPR MAC frame into which the MAC frame is encapsulated, and the station node receives the RPR MAC frame that the MAC frame is not encapsulated.
Claims22
A resilient packet ring (RPR) network system in a RPR network where a plurality of station nodes terminating media access control (MAC) frames and a plurality of bridge nodes forwarding MAC frames are connected to one or more ringlets,
- wherein each of the station nodes, in the case of transmitting a MAC frame to other station node, transmits a RPR MAC frame in which a MAC address of the other station node is set as a destination MAC address, and transmits, in the case of transmitting a MAC frame to a station accommodated to a bridge node and located in the outside of the ringlets, a RPR MAC frame into which the MAC frame is encapsulated in such a state that the node can capture the MAC frame,
- each of the bridge nodes, in the case of receiving, from a station accommodated to the bridge node itself and located in the outside of the ringlets, the MAC frame in which a MAC address of a station accommodated to other bridge node and located in the outside of the ringlets is set as a destination address, transmits a RPR MAC frame into which the MAC frame is encapsulated in such a state that the other bridge node can capture the RPR MAC frame, and, in the case of receiving, from a station accommodated to the bridge node itself, a MAC frame in which a MAC address of a station node is set as a destination MAC address, converts the MAC frame into a RPR MAC frame and transmits the RPR MAC frame,
- each of the station nodes captures the RPR MAC frame that the MAC frame is not encapsulated, and
- each of the bridge nodes captures the RPR MAC frame into which the MAC frame is encapsulated, and transmits the MAC frame within the captured RPR MAC frame to a station accommodated to the bridge node itself and located in the outside of the ringlets.
A bridge node connected, together with a plurality of station nodes terminating media access control (MAC) frames, to one or more ringlets constructing a resilient packet ring (RPR) network,
- wherein the bridge node, in the case of receiving the MAC frame transmitted from a station being located in the outside of the ringlets and in which a MAC address of other station located in the outside of the ringlets and accommodated to other bridge node connected to the ringlets is set for a destination MAC address, transmits a RPR MAC frame into which the MAC frame is encapsulated in such a state that the other bridge node can capture the RPR MAC frame, and
- the bridge node, in the case of receiving a MAC frame in which a MAC address of a station node is set for a destination MAC address from the station, converts the MAC frame into a RPR MAC frame and transmits the RPR MAC frame.
A station node connected, together with a plurality of bridge nodes forwarding a media access control (MAC) frame, to one or more ringlets constructing a resilient packet ring (RPR) network,
- Wherein the station node, in the case of transmitting a MAC frame transmitted to other station node connected to the ringlets, transmits a RPR MAC frame in which a MAC address of the other station node is set for a destination MAC address, and
- the station node, in the case of transmitting a MAC frame to a station accommodated to a bridge node and located in the outside of the ringlets, transmits a RPR MAC frame into which the MAC frame is encapsulated in such a state that the bridge node can capture the RPR MAC frame.
A resilient packet ring (RPR) card installed into a bridge node connected, together with a plurality of station nodes terminating a media access control (MAC) frame, to one or more ringlets constructing a RPR network,
- wherein the RPR card, in the case of receiving a MAC frame transmitted from a station located in the outside of the ringlets, wherein the MAC frame has a MAC address of other station located in the outside of the ringlets and accommodated to other bridge node on the ringlets as a destination MAC address thereof, transmits a RPR MAC frame into which the MAC frame is encapsulated in such a state that the other bridge node can capture the RPR MAC frame, and
- the RPR card, in the case of receiving a MAC frame in which a MAC address of a station node is set in a destination MAC address from the station, converts the MAC frame into a RPR MAC frame and transmits the RPR MAC frame.
A media access control (MAC) frame forwarding method for a bridge node connected, together with a plurality of station nodes terminating MAC frames, to one or more ringlets constructing a resilient packet ring (RPR) network, said method comprising:
- transmitting, in the case of receiving a MAC frame from a station, which is located in the outside of the ringlets, and in which a MAC address of other station, which is located in the outside of the ringlets and is accommodated to other bridge node connected to the ringlets, is set for a destination MAC address, a RPR MAC frame into which the MAC frame is encapsulated in such a state that the other bridge node can capture the RPR MAC frame;
- and
- converting, in the case of receiving a MAC frame from the station in which a MAC address of a station node is set for a destination MAC address, the MAC frame into a RPR MAC frame and transmitting the RPR MAC frame.
A MAC frame forwarding method for a resilient packet ring (RPR) card installed into a bridge node connected, together with a plurality of station nodes terminating media access control (MAC) frames, to one or more ringlets constructing a RPR network, said method comprising:
- transmitting, in the case of receiving a MAC frame from a station, which is located in the outside of the ringlets, and in which a MAC address of other station, which is located in the outside of the ringlets and is accommodated to other bridge node connected to the ringlets, is set for a destination MAC address thereof, a RPR MAC frame into which the MAC frame is encapsulated in such a state that the other bridge node can capture the RPR MAC frame, and
- converting, in the case of receiving a MAC frame from the station in which a MAC address of a station node is set for a destination MAC address, the MAC frame into a RPR MAC frame and transmitting the RPR MAC frame.
Dependencies are inferred from the claim text.