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:
May. 05, 2009
Filed:
Apr. 30, 2003
Daniel Tappan, Boxborough, MA (US);
Daniel Tappan, Boxborough, MA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method for supporting a GMPLS hierarchy through multiple routing instances in a network having multiple regions is disclosed. Each region has associated therewith a separate routing instance. The method includes initiating creating a link between two regions at an edge device of a first region and selecting a path between the two regions. A message is forwarded from the edge device to a network device coupled to a second region and a response is received from the network device at the edge device. A new LSP linking the two regions is inserted into a routing database for a routing instance associated with the second region.