Managing host routes for local computer networks with a plurality of field area routers

Patent metadata

Field	Value
Publication number	US-9130863-B2
Application number	US-201414311537-A
Country	US
Kind code	B2
Filing date	Jun 23, 2014
Priority date	Jul 5, 2011
Publication date	Sep 8, 2015
Grant date	Sep 8, 2015

Abstract

In one embodiment, a particular field area router (FAR), in a local computer network (e.g., a mesh network) having a plurality of FARs, advertises a common subnet prefix assigned to the local computer network into a global computer network. Each of the plurality of FARs of the local computer network is configured to accept any traffic destined to the local computer network, and a tunnel overlay is built among the plurality of FARs. Upon receiving a packet at the particular FAR destined to a particular device in the local computer network, and in response to the particular FAR not having a host route to the particular device, it forwards the packet on the tunnel overlay to another of the plurality of FARs of the local computer network.

First claim

What is claimed is:

1. A method, comprising:
advertising, into a global computer network, from a particular field area router (FAR) in a local computer network having a plurality of FARs, a common subnet prefix assigned to the local computer network, wherein each of the plurality of FARs of the local computer network is configured to accept any traffic destined to the local computer network;
building a tunnel overlay among the plurality of FARs of the local computer network;
r…

Assignees

• Cisco Tech Inc

Inventors

• Vasseur Jean-Philippe
• Hui Jonathan W
• Previdi Stefano
• Shaffer Shmuel

Classifications

• H04L45/64 Primary

  Electricity · mapped topic

• H04L45/22 Primary

  Electricity · mapped topic