Cisco Technology, Inc.

Arjun Sreekantiah

Keyur Patel

David Delano Ward

Clarence Filsfils

Stefano Benedetto Previdi

Muthurajah Sivabalan

Patrice Brissette

Robert Raszuk

Neeraj Malhotra

Burjiz F Pithawala

Serpil Bayraktar

Ruchi D Kapoor

Manish Bhardwaj

Suresh Doddagaddavalli Basavarajappa

Kalpesh Kirtikant Zinjuwadia

Aspects of the embodiments are directed to methods, systems, and computer program products for stitching route targets between disparate virtual private network domains. Embodiments are directed to a datacenter interconnect (DCI) network element that is configured to receive from a first network node of a first domain a routing prefix comprising a first route target value; determine that the first route target value is associated with a first route target set, the first route target set associated with the first domain; determine a corresponding second route target set associated with a second domain; create a second routing prefix that includes one or more route target values from the second route target set; and transmit the second routing prefix to a network node in the second domain.

DCI stitching for data center overlays

Embodiments of the present disclosure provide a set of extensions to enable BGP to setup and maintain flexible Segment Routed Traffic Engineered (SR-TE) policies. Embodiments of the present disclosure further propose a new approach for steering traffic onto SR-TE paths on a per-prefix basis without deploying the existing complex mechanisms.

Creating and maintaining segment routed traffic engineering policies via border gateway protocol

A network includes a route reflector peered with client routers. From a perspective of the route reflector, a best path to the destination address is selected by applying to candidate paths ordered comparison tests that progress from policy tests through one or more additional tests until the best path is selected. A determination is made as to whether the best path was selected based on the policy tests exclusively. If the best path was selected based on the policy tests exclusively, the best path is assigned to each of the client routers. If the best path was not selected based on the policy tests exclusively, from a perspective of each client router, a respective best path is selected by applying to the candidate paths the one or more additional tests, and the respective best paths are assigned to the respective client routers.

Optimal route reflection using efficient border gate protocol best path selection

A method is disclosed for providing prioritized routing table convergence in Border Gateway Protocol (BGP) hosts, as part of a BGP process that is executed by a route processor in a network, wherein the processor hosts a plurality of BGP routing tables each associated with a specified sub-address family (SAFI). A convergence priority order value is created and stored in association with each routing table. As part of performing a convergence phase of BGP processing, the convergence priority order value of each routing table is obtained. The convergence phase is then performed for the routing tables only according to an order that is represented by the convergence priority order values. Therefore, convergence proceeds more quickly and values needed by other routing processes become available earlier.

Method and apparatus providing prioritized convergence in border gateway protocol

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San Jose, CA, United States of America

Arjun Sreekantiah