公开(公告)号：US10652047B2

公开(公告)日：2020-05-12

申请号：US16010444

申请日：2018-06-16

Applicant: Cisco Technology, Inc.

Inventor： Prakash Chand Jain ,  Sanjay Kumar Hooda ,  Victor M. Moreno ,  Satish Kumar Kondalam

IPC: H04L12/46 ,  H04L12/741

Abstract: In one embodiment, a method is performed at a first node. The method may include receiving, at a first node, a request from a source host associated with a network to communicate with a destination host. The first node may determine whether the destination host is associated with the network. If the destination host is not associated with the network, the first node may determine an instance identifier (IID) and a proxy egress tunnel router (PETR) locator address used to communicate with the destination host. The first node may send an indicator to an ingress tunnel router (ITR) to encapsulate a packet with the IID and the PETR locator address before sending the packet from the source host to the destination host.

公开(公告)号：US20210135984A1

公开(公告)日：2021-05-06

申请号：US17098633

申请日：2020-11-16

Applicant: Cisco Technology, Inc.

Inventor： Prakash Chand Jain ,  Sanjay Kumar Hooda ,  Victor M. Moreno ,  Satish Kumar Kondalam

IPC: H04L12/725 ,  H04L12/713 ,  H04L12/927 ,  H04L12/715

Abstract: In one embodiment, a method is performed at a node in a multi-site enterprise fabric. The method includes obtaining map entries from a fabric control plane of the multi-site enterprise fabric, where the map entries are associated with identifiers of endpoints in external networks, site and virtual network identifiers of sites in the multi-site enterprise fabric, location identifiers of border nodes, and characteristics of the border nodes. The method further includes receiving a request from a source to connect to an external endpoint. After deriving an external endpoint identifier and source parameters, the method additionally includes establishing at least one connection between the source and the external endpoint via border node(s) that are selected from the map entries based at least in part on the source parameters, the external endpoint identifier, and characteristics of the border node(s) with their site and virtual network identifier(s) along the at least one connection.

公开(公告)号：US10791004B2

公开(公告)日：2020-09-29

申请号：US16173487

申请日：2018-10-29

Applicant: Cisco Technology, Inc.

Inventor： Prakash Chand Jain ,  Sanjay Kumar Hooda ,  Victor M. Moreno ,  Satish Kumar Kondalam

IPC: G06F15/177 ,  H04L12/46 ,  H04L12/741 ,  H04L12/713 ,  H04L12/715

Abstract: In one example, a router is configured to process communications according to a tunneling protocol to provide network overlay tunnels to facilitate virtual private networks (VPNs) for hosts, and to process communications associated with an external network with use of a provider virtualization routing and forwarding (VRF) instance. With use of a subscription function, the router receives an initial set of extranet VPN prefixes associated with the network overlays for storage in association with the provider VRF, as well as regularly receive publications of updates to extranet VPN prefixes associated with the network overlays. With use of a route obtaining function, the router, in response to receiving a communication associated with one of the stored extranet VPN prefixes at the provider VRF, sends to a communications management server a message indicating request for a host-to-router mapping and receive from the communications management server a reply including the host-to-router mapping.

公开(公告)号：US11546254B2

公开(公告)日：2023-01-03

申请号：US17098633

申请日：2020-11-16

Applicant: Cisco Technology, Inc.

Inventor： Prakash Chand Jain ,  Sanjay Kumar Hooda ,  Victor M. Moreno ,  Satish Kumar Kondalam

IPC: H04L45/302 ,  H04L45/586 ,  H04L45/64 ,  H04L47/80 ,  H04L49/25

Abstract: In one embodiment, a method is performed at a node in a multi-site enterprise fabric. The method includes obtaining map entries from a fabric control plane of the multi-site enterprise fabric, where the map entries are associated with identifiers of endpoints in external networks, site and virtual network identifiers of sites in the multi-site enterprise fabric, location identifiers of border nodes, and characteristics of the border nodes. The method further includes receiving a request from a source to connect to an external endpoint. After deriving an external endpoint identifier and source parameters, the method additionally includes establishing at least one connection between the source and the external endpoint via border node(s) that are selected from the map entries based at least in part on the source parameters, the external endpoint identifier, and characteristics of the border node(s) with their site and virtual network identifier(s) along the at least one connection.

公开(公告)号：US10749799B2

公开(公告)日：2020-08-18

申请号：US15968205

申请日：2018-05-01

Applicant: Cisco Technology, Inc.

Inventor： Prakash Chand Jain ,  Sanjay Kumar Hooda ,  Victor M. Moreno

IPC: H04L12/28 ,  H04L12/747 ,  H04L29/12

Abstract: In accordance with various embodiments, a method is performed including receiving, at a first node associated with a first instance identifier, a packet from a first host addressed to a second host. The method includes sending, from the first node to the second node, the packet. The method includes receiving, from the second node, a solicit map-request for the second host including the first instance identifier of the first node and the second instance identifier of the second node for the second host. The method includes sending, in response to receiving the solicit map-request for the second host, a map-request for the second host. The method includes receiving, in response to sending the map-request for the second host, a map-reply indicating a third node associated with the second instance identifier. The method includes sending, from the first node to the third node, the packet.