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US 11,057,292 B1Granted
Border node traffic convergence
AssigneeCisco Technology, Inc.
InventorsPrakash Jain, Sanjay K. Hooda, Victor Moreno
Life of this patent
Estimating the term…
Abstract
Techniques for network routing border convergence are described. Backup paths for external connections for a network are established and provide for a temporary path for network traffic during network routing convergence, preventing traffic loss at network border nodes.
Claims20
A method, comprising:
- transmitting, from a first border node in a network, a registration message for a first external traffic connection to a mapping function in the network, wherein the mapping function is an independent function, and wherein the mapping function maintains multiple extranet policies for the network;
- receiving, from the mapping function, a first map notification indicating a second border node in the network is registered for a second external traffic connection;
- establishing a first backup path from the first border node to the second border node for the first external traffic connection;
- detecting, at the first border node, a change in the first external traffic connection;
- routing, at the first border node, network traffic for the first external traffic connection via the first backup path;
- and
- transmitting a deregistration message for the first external traffic connection to the mapping function in the network.
4 more elements
A system, comprising:
- a processor;
- and
- a memory comprising instructions which, when executed on the processor, performs an operation, the operation comprising:
- transmitting, from a first border node in a network, a registration message for a first external traffic connection to a mapping function in the network, wherein the mapping function is an independent function, and wherein the mapping function maintains multiple extranet policies for the network;
- receiving, from the mapping function, a first map notification indicating a second border node in the network is registered for a second external traffic connection;
- establishing a first backup path from the first border node to the second border node for the first external traffic connection;
- detecting, at the first border node, a change in the first external traffic connection;
- routing, at the first border node, network traffic for the first external traffic connection via the first backup path;
- and
- transmitting a deregistration message for the first external traffic connection to the mapping function in the network.
7 more elements
A computer program product comprising a non-transitory computer-readable medium program having program instructions embodied therewith, the program instructions executable by a processor to perform an operation comprising:
- transmitting, from a first border node in a network, a registration message for a first external traffic connection to a mapping function in the network, wherein the mapping function is an independent function, and wherein the mapping function maintains multiple extranet policies for the network;
- receiving, from the mapping function, a first map notification indicating a second border node in the network is registered for a second external traffic connection;
- establishing a first backup path from the first border node to the second border node for the first external traffic connection;
- detecting, at the first border node, a change in the first external traffic connection;
- routing, at the first border node, network traffic for the first external traffic connection via the first backup path;
- and
- transmitting a deregistration message for the first external traffic connection to the mapping function in the network.
4 more elements
Dependencies are inferred from the claim text.