Patent ID: 7889638
Filing Date: 2011-02-15
Classification: H04L

Abstract:
1. A method for conducting a point-to-point (PPP) session comprising: establishing a PPP session involving at least a local node and a remote node, wherein the local node comprises a data plane for handling transfer of data for the PPP session at the local node, and wherein the local node comprises a first control plane for controlling operations of the data plane; replicating a portion of PPP session information accessed by the first control plane to a second control plane of the local node, the second control plane comprising first components that operate concurrently with the first control plane and at least one second component that begins operation following a switch over from the first control plane to the second control plane, switching from the first control plane to the second control plane, wherein the first components of the second control plane direct operation of the data plane in accordance with the portion of information prior to operation of the at least one second component; detecting a possible disconnection of the PPP session during switching from the first control plane to the second control plane; and terminating the PPP session in response to detecting the possible disconnection, and wherein the data plane maintains a transfer of data for the PPP session during switching from the first control plane to the second control plane.