Traffic recovery at interworking nodes
First Claim
1. A method of performing traffic recovery at a boundary node for interworking between a first network and a second network, the boundary node comprising first equipment for interfacing with the first network, second equipment for interfacing with the second network, a first interworking interface for carrying traffic between the second equipment and the first equipment, and a second interworking interface for carrying traffic between the second equipment and the first equipment, wherein the first equipment comprises a switch fabric, and wherein each of the interworking interfaces is for interfacing with a respective traffic-carrying path of the second network, the method comprising, for traffic flow in a direction from the second network to the first network:
- determining that recovery switching is required for traffic on one of the traffic-carrying paths of the second network;
wherein the first interworking interface and the second interworking interface carry traffic in a same direction as one another between the second equipment and the first equipment, andwherein the method further comprises;
performing a recovery switch by operating the switch fabric in the first equipment to switch from use of one of the first and second interworking interfaces to use of a different one of the first and second interworking interfaces in order to achieve a recovery switch between the traffic-carrying paths of the second network,wherein the first network uses a first transport technology and the second network uses a second transport technology, and the switch fabric is arranged to switch traffic of the first transport technology, and the method further comprises;
mapping, at the interworking interfaces, traffic between a transport technology used on the first network and a transport technology used on the second network.
1 Assignment
0 Petitions
Accused Products
Abstract
A boundary node for interworking between a first network and a second network comprises first equipment for interfacing with the first network and second equipment for interfacing with the second network. The first equipment comprises a switch fabric. A first interworking interface and a second interworking interface are provided for carrying traffic between the second equipment and the first equipment. Each of the interworking interfaces is for interfacing with a respective traffic-carrying path of the second network. For traffic flow in a direction from the second network to the first network, a method comprises determining that recovery switching is required for traffic on one of the traffic-carrying paths of the second network and performs a recovery switch, using the switch fabric in the first equipment, to switch between the interworking interfaces to achieve a recovery switch between the traffic-carrying paths of the second network.
11 Citations
14 Claims
-
1. A method of performing traffic recovery at a boundary node for interworking between a first network and a second network, the boundary node comprising first equipment for interfacing with the first network, second equipment for interfacing with the second network, a first interworking interface for carrying traffic between the second equipment and the first equipment, and a second interworking interface for carrying traffic between the second equipment and the first equipment, wherein the first equipment comprises a switch fabric, and wherein each of the interworking interfaces is for interfacing with a respective traffic-carrying path of the second network, the method comprising, for traffic flow in a direction from the second network to the first network:
-
determining that recovery switching is required for traffic on one of the traffic-carrying paths of the second network; wherein the first interworking interface and the second interworking interface carry traffic in a same direction as one another between the second equipment and the first equipment, and wherein the method further comprises; performing a recovery switch by operating the switch fabric in the first equipment to switch from use of one of the first and second interworking interfaces to use of a different one of the first and second interworking interfaces in order to achieve a recovery switch between the traffic-carrying paths of the second network, wherein the first network uses a first transport technology and the second network uses a second transport technology, and the switch fabric is arranged to switch traffic of the first transport technology, and the method further comprises; mapping, at the interworking interfaces, traffic between a transport technology used on the first network and a transport technology used on the second network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus for use at a boundary node for interworking between a first network and a second network, the apparatus comprising:
-
first equipment for interfacing with the first network, the first equipment comprising a switch fabric; second equipment for interfacing with the second network; a first interworking interface and a second interworking interface for carrying traffic between the second equipment and the first equipment, wherein each of the interworking interfaces is for interfacing with a respective traffic-carrying path of the second network, and wherein the first interworking interface and the second interworking interface carry traffic in a same direction as one another between the second equipment and the first equipment; and control logic which is arranged to; determine that recovery switching is required for traffic on one of the traffic-carrying paths of the second network; and perform a recovery switch by operating the switch fabric of the first equipment to switch from use of one of the first and second interworking interfaces to use of a different one of the first and second interworking interfaces in order to achieve a recovery switch between the traffic-carrying paths of the second network, wherein the first network uses a first transport technology and the second network uses a second transport technology, and the switch fabric is arranged to switch traffic of the first transport technology. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A non-transitory machine-readable medium carrying instructions which, when executed by a processor, cause the processor to perform a method of performing traffic recovery at a boundary node for interworking between a first network and a second network, the boundary node comprising first equipment for interfacing with the first network, second equipment for interfacing with the second network, a first interworking interface for carrying traffic between the second equipment and the first equipment, and a second interworking interface for carrying traffic between the second equipment and the first equipment, wherein the first equipment comprises a switch fabric, and wherein each of the interworking interfaces is for interfacing with a respective traffic-carrying path of the second network, the method comprising, for traffic flow in a direction from the second network to the first network:
-
determining that recovery switching is required for traffic on one of the traffic-carrying paths of the second network; wherein the first interworking interface and the second interworking interface carry traffic in a same direction as one another between the second equipment and the first equipment, and wherein the method further comprises; performing a recovery switch by operating the switch fabric in the first equipment to switch from use of one of the first and second interworking interfaces to use of a different one of the first and second interworking interfaces in order to achieve a recovery switch between the traffic-carrying paths of the second network, wherein the first network uses a first transport technology and the second network uses a second transport technology, and the switch fabric is arranged to switch traffic of the first transport technology, and the method further comprises; mapping, at the interworking interfaces, traffic between a transport technology used on the first network and a transport technology used on the second network.
-
Specification