Cisco Technology, Inc.

Johnson Leong

Sanjay Kumar Hooda

Vrushali Ashtaputre

Sudhir Kumar Jain

Shree N Murthy

Vina Ermagan

Marc Portoles Comeras

Jesus Arango

Victor Manuel Moreno

Satish Kumar Kondalam

Reshad Rahman

Alberto Rodriguez Natal

Daniel A Alvarez

Lev Shvarts

Srinivas Subramanian

Rituparna Agrawal

Abiose Gbolahan Ibigbami

Rohan Grover

A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases managed by control plane of the fabric network to update routing locator entries associated with L2-VNID and L3-VNID in one or more databases when a client moves from behind a first switch to behind a second switch. In some embodiments, the control plane finds the L3-VNID from the L2-VNID. The L3-VNID is used to search for all IP addresses corresponding to a client-MAC. At least new routing locator value that is used in the routing locator entries is provided to the first switch, the second switch, and border nodes associated with the fabric network.

System and method of fast roaming in an enterprise fabric network

A method and a router device for managing memory for network overlay routes with fallback route support prioritization may be provided. A network overlay route as a candidate network overlay route may be obtained at a router for storage in a memory. The memory may store a plurality of network overlay routes for forwarding user plane traffic in a network. An assessment for storage of the candidate network overlay route based on a priority level indicator of the candidate network overlay route may be performed. The priority level indicator may be indicative of a fallback route support level of the candidate network overlay route in the router. Based on the assessment, at least one of the following may be performed: adding the candidate network overlay route to the memory and refraining from adding the candidate network overlay route to the memory.

Router methods and apparatus for managing memory for network overlay routes with fallback route support prioritization

A Location/Identifier Separation Protocol (LISP) mapping server, including: a network interface for communicating with a LISP-enabled network; a mapping database; a subscription database; and an overlapping subscription publication engine (OSPE) to: receive a first mapping of a first subnetwork to a first routing locator (RLOC); add the first mapping to the mapping database; receive from a first ingress tunnel router (ITR) a subscription request for an endpoint identifier (EID) within the first subnetwork; add to a first subscription entry for the first subnetwork in the subscription database a subscription for the first ITR; receive a second mapping of a second subnetwork to a second RLOC, wherein the second subnetwork overlaps the first subnetwork; add the second mapping to the mapping database; and copy at least part of the first subscription entry to a second subscription entry for the second subnetwork.

Stateful LISP subscription for overlapping subnetworks

System and method of fast roaming in enterprise fabric networks

The present technology provides a system, method, and computer-readable medium directed to dynamic implementation and management of multi-provider internet access featuring multiple access points across a multi-site overlay network fabric. An aspect of the technology is directed to the implementation of a common fabric-wide Virtual Network (VN) with a unique Internet Instance Identifier (Internet IID) that is dedicated to internet access traffic. Default access routes from multiple service providers (SP) are leaked into the VN with the Internet IID at exit points of the fabric using local Extranet policies. Internet-bound traffic generated from any point within the overlay fabric network is then redirected into the Internet IID, using remote Extranet policies. Internet-bound traffic, once in the Internet IID, follows the SP default access route(s) towards the exit points where SP specific access policies may be applied to the traffic which is then forwarded to the corresponding SP network.

Distributed internet access in an overlay fabric using combined local and remote extranet policies

A method for establishing a partitioned fabric network is described. The method includes establishing a fabric network including a plurality of border nodes to couple the fabric network to one or more external data networks and a plurality of edge nodes to couple to the fabric network to one or more hosts. The method further includes defining a plurality of partitions of the fabric network. The method further includes registering each of the plurality of partitions with a corresponding one of the plurality of border nodes and with each of the plurality of edge nodes.

Horizontal scaling of fabric networks

A system and method for fast roaming in one or more enterprise fabric network. The fast roaming involves correlation operations performed in one or more databases to update routing values associated with L2-VNID and L3-VNID in the one or more databases when a client moves from a first network device to a second network device. In some embodiments, the control plane finds the L3-VNID from the L2-VNID.

According to one example embodiment, an EID-NOTIFY packet is defined for use with the Location/Identifier Separation Protocol (LISP). A first-hop network element may send EID-NOTIFY responsive to decoding a data packet from a previously undetected host on its subnetwork. A site network element may receive EID-NOTIFY, and send a MAP-REGISTER message to a mapping system. EID-NOTIFY may have substantially the same format as MAP-NOTIFY. This may enable the site network element to be removed more than one hop from the subnetwork.

Growing community of inventors

Sunnyvale, CA, United States of America

Johnson Leong