The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 2009
Filed:
Feb. 17, 2005
James N. Guichard, Groton, MA (US);
W. Scott Wainner, Potomac Falls, VA (US);
Brian E. Weis, San Jose, CA (US);
David A. Mcgrew, Poolesville, MD (US);
James N. Guichard, Groton, MA (US);
W. Scott Wainner, Potomac Falls, VA (US);
Brian E. Weis, San Jose, CA (US);
David A. McGrew, Poolesville, MD (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method and apparatus for providing routing protocol support for distributing encryption information is presented. Subnet prefixes reachable on a first customer site in an encrypted manner are identified, as are security groups the subnet prefixes belong to. An advertisement is received at a first Customer Edge (CE) device in the first customer site, the advertisement originating from a Customer (C) device in the first customer site. The advertisement indicates links, subnets to be encrypted, and security group identifiers. The prefixes and the security group identifiers are then propagated across a service provider network to a second CE device located in a second customer site. In such a manner, encryption and authentication is expanded further into a customer site, as customer devices are able to indicate to a service provider network infrastructure and other customer devices in other customer sites which local destinations require encryption/authentication.