Dual-homing layer 2 switch

USRE45454E1 · kind E1 · reissue

Assignee

• GARRETTCOM, INC. · US

Inventors

• Dileep Sivasankaran · Fremont, US
• Frank S. Madren · Los Gatos, US

Key dates

• Filing date: Oct 11, 2011
• Grant date: Apr 7, 2015
• Expiry date: Oct 11, 2031

Classification

• Technology area (CPC —): General

Abstract

One embodiment relates to a method of providing dual-homing in a layer 2 switch. A determination is made as to whether a link is available to an upstream network on for a currently active port. If the link is unavailable, then the layer 2 switch a) performs a switchover such that the currently active port becomes a newly passive port, and a currently passive port becomes a newly active port, b) clears entries in an address table of the layer 2 switch, and c) spoofs MAC addresses out of the newly active link. Other embodiments are also disclosed.