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:
Sep. 22, 2009
Filed:
Jun. 02, 2006
Alok Verma, Fremont, CA (US);
Alok Verma, Fremont, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Discovering a network service topology of a virtual private network (VPN) that uses multiprotocol label switching (MPLS) comprises receiving route target values from a virtual private network (VPN) route forwarding table (VRF table) of a networking device; determining and storing in a table one or more link pairs based on the route target values, wherein each of the link pairs indicates a connection between a first site and a second site within the VPN; creating a set of VPN objects based on an association between a first VPN object and the one or more link pairs stored in the table, wherein each of the VPN objects includes information indicating connectivity between a subset of sites from a plurality of sites within the VPN; and determining the topology for the first VPN object based on applying one or more topology rules to the subset of sites within the first VPN object.