公开(公告)号：US20180367627A1

公开(公告)日：2018-12-20

申请号：US15834341

申请日：2017-12-07

Applicant: Cisco Technology, Inc.

Inventor： Sanjay K. HOODA ,  Prakash JAIN ,  Marc P. COMERAS ,  Victor M. MORENO ,  Atri INDIRESAN

IPC: H04L29/08 ,  H04L29/12

CPC classification number: H04L67/26 ,  H04L61/103 ,  H04L61/1511 ,  H04L61/2015 ,  H04L61/6022

Abstract: The embodiments herein push notifications to network devices used by a shared service to which a roaming host in a network fabric is subscribed. For example, a network fabric controller can access a VN policy table which stores the relationships between the virtual networks in the network fabric. Using this table, the controller can identify what shared service VNs (i.e., extranets) can communicate with the host's VN. The controller can push out notifications to the network devices used by the shared service VNs to store the new location of the host. That is, the network devices that locally store a location of the host can update their routing caches to point to the new location of the host. In this manner, the network fabric can reduce the time needed to reconverge on the new location of the host by updating the network devices used by the shared service VNs.

公开(公告)号：US20200136862A1

公开(公告)日：2020-04-30

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: H04L12/46 ,  H04L12/715 ,  H04L12/713 ,  H04L12/741

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：US20190215381A1

公开(公告)日：2019-07-11

申请号：US15867273

申请日：2018-01-10

Applicant: Cisco Technology, Inc.

Inventor： Laxmi MUKUND ,  Victor M. MORENO

IPC: H04L29/08 ,  H04L29/12 ,  H04L12/26

Abstract: Techniques are disclosed for maintaining reachability of an application moving between a central cloud network and a fog network using duplicate endpoint identifiers. Network characteristics of a cloud environment are monitored. The cloud environment includes a central cloud network and a fog network. A server in the central cloud network hosts an application that serves a client device. The application is assigned an endpoint identifier that is mapped to a locator identifier associated with the central cloud network. It is determined that a condition for moving the application to the fog network is satisfied based on the monitored network characteristics. An instance of the application is installed on a server in the fog network. The endpoint identifier is assigned to the application instance and mapped to a locator identifier associated with the fog network.