Segment routing: PCE driven dynamic setup of forwarding adjacencies and explicit path
AssigneeCisco Technology, Inc.
InventorsStefano B. Previdi, Clarence Filsfils
Life of this patent
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Abstract
An apparatus and method for path creation element driven dynamic setup of forwarding adjacencies and explicit path. In one embodiment of the method, a node receives an instruction to create a tunnel between the node and another node. The node creates or initiates the creation of the tunnel in response to receiving the instruction, wherein the tunnel comprises a plurality of nodes in data communication between the node and the other node. The node maps a first identifier (ID) to information relating to the tunnel. The node advertises the first ID to other nodes in a network of nodes.
Claims20
A method comprising:
- a node transmitting an instruction to create a tunnel between a first node and a second node via a plurality of nodes in data communication between the first node and the second node;
- the node receiving a first segment identifier (ID) from the first node in response to transmitting the instruction, wherein the first segment ID relates to the tunnel;
- the node creating a segment stack for a segment path through a network, wherein the segment stack comprises the first segment ID;
- the node transmitting the segment stack to an ingress node of the network.
An apparatus comprising:
- a node comprising a processor and a memory for storing instructions that are executable by the processor, wherein the processor is configured to implement a method in response to executing the instructions, the method comprising:
- transmitting an instruction to create a tunnel between a first node and a second node via a plurality of nodes in data communication between the first node and the second node;
- receiving a first segment identifier (ID) from the first node in response to transmitting the instruction, wherein the first segment ID relates to the tunnel;
- creating a segment stack for a segment path through a network, wherein the segment stack comprises the first segment ID;
- transmitting the segment stack to an ingress node of the network.
A non-transitory computer readable medium comprising instructions that implements a method when executed on processor of a node, the method comprising:
- transmitting an instruction to create a tunnel between a first node and a second node via a plurality of nodes in data communication between the first node and the second node;
- receiving a first segment identifier (ID) from the first node in response to transmitting the instruction, wherein the first segment ID relates to the tunnel;
- creating a segment stack for a segment path through a network, wherein the segment stack comprises the first segment ID;
- transmitting the segment stack to an ingress node of the network.
Dependencies are inferred from the claim text.