Layer 3 router and method for routing PRP frames
AssigneeSiemens Canada Limited
InventorKien Tran
Life of this patent
Estimating the term…
Abstract
There is described a Layer 3 router and method for routing PRP frames. A first frame is received at one or more ports of the Layer 3 router. A PRP suffix of the first frame, a source MAC address of the first frame, and a Redundancy Control Trailer of the first frame are identified. The first frame is forwarded to a routing subsystem of the Layer 3 router, and a second frame including a source IP address is received from the routing subsystem. The source MAC address of the first frame is assigned to the second frame in response to associating the source IP address with the source MAC address, and the Redundancy Control Trailer is appended to the second frame. The second frame is transmitted from the port or ports of the Layer 3 router.
Claims20
A Layer 3 router for routing PRP frames comprising:
- a routing subsystem;
- at least one port configured to receive a first frame at the Layer 3 router and transmit a second frame from the Layer 3 router;
- and
- a PRP module configured to identify a PRP suffix of the first frame, a source MAC address of the first frame, and a Redundancy Control Trailer of the first frame, forward the first frame to the routing subsystem, receive a second frame including a source IP address from the routing subsystem, assign the source MAC address of the first frame to the second frame in response to associating the source IP address with the source MAC address, and append the Redundancy Control Trailer to the second frame.
A method of a Layer 3 router for routing PRP frames, the method comprising:
- receiving a first frame at one or more ports of the Layer 3 router;
- identifying a PRP suffix of the first frame, a source MAC address of the first frame, and a Redundancy Control Trailer of the first frame;
- forwarding the first frame to a routing subsystem of the Layer 3 router;
- receiving, from the routing subsystem, a second frame including a source IP address;
- assigning the source MAC address of the first frame to the second frame in response to associating the source IP address with the source MAC address and appending the Redundancy Control Trailer to the second frame;
- and
- transmitting the second frame from the one or more ports of the Layer 3 router.
A non-transitory computer readable medium including executable instructions which, when executed, causes at least one processor to route PRP frames for a Layer 3 router by:
- receiving a first frame at one or more ports of the Layer 3 router;
- identifying a PRP suffix of the first frame, a source MAC address of the first frame, and a Redundancy Control Trailer of the first frame;
- forwarding the first frame to a routing subsystem of the Layer 3 router;
- receiving, from the routing subsystem, a second frame including a source IP address;
- assigning the source MAC address of the first frame to the second frame in response to associating the source IP address with the source MAC address and appending the Redundancy Control Trailer to the second frame;
- and
- transmitting the second frame from the one or more ports of the Layer 3 router.
Dependencies are inferred from the claim text.