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. 07, 2017
Filed:
Oct. 19, 2010
Srikanth Keesara, Tewksbury, MA (US);
Sakthivadivu Saravanaraj, Nashua, NH (US);
Liming Sun, Westford, MA (US);
Xiaolan Zhou, Carlisle, MA (US);
Srikanth Keesara, Tewksbury, MA (US);
Sakthivadivu Saravanaraj, Nashua, NH (US);
Liming Sun, Westford, MA (US);
Xiaolan Zhou, Carlisle, MA (US);
Extreme Networks, Inc., San Jose, CA (US);
Abstract
A transport network employs dual homing to an access network to provide connectivity from multiple network switches. Dual homing is a mechanism by which an access network employs pair of switches in the transport network as if it were connecting to a single device. Conventional arrangements for defining multiple paths from a transport network to an access network suffer from the shortcomings of potential routing loops, increased hops to the access network, and inability or inconsistency with forwarding to different types of access networks, and may involve redirecting traffic absent faults in the access network. The dual homed network switches identify the type of access network and perform switching logic corresponding to the access network type to provide comprehensive dual-homed support to the access network independently of the type of transport employed in the access network, and employ redirection only if there is a fault in the access network.