Benjamin G Robinson

US Patent:

6954794, Oct 11, 2005

Filed:

Oct 21, 2002

Appl. No.:

10/274744

Inventors:

Joseph Michael Rudd - Cary NC, US
Benjamin Crawford Robinson - Raleigh NC, US
Jeffrey Lynn Ellis - Holly Springs NC, US
David F. Knierim - Cary NC, US

Assignee:

Tekelec - Calabasas CA

International Classification:

G06F015/16
H04L012/18

US Classification:

709230, 709238, 370351, 370432

Abstract:

Methods and systems for exchanging reachability information and for switching between redundant interfaces in a network cluster are disclosed. Nodes in the network cluster are connected via redundant links and exchange reachability messages at periodic intervals. Each node includes a kernel routing table used to route messages and a reachability application routing table for storing reachability information used to update entries in the kernel routing table. Each node executes a predetermined algorithm for selecting entries in the reachability application routing table to be written to the kernel routing table.

US Patent:

20080285436, Nov 20, 2008

Filed:

May 15, 2007

Appl. No.:

11/803681

Inventors:

Benjamin C. Robinson - Raleigh NC, US

International Classification:

H04J 3/14
H04L 12/66

US Classification:

370217, 370401, 714 2

Abstract:

Methods, systems, and computer program products for providing an enriched messaging service in a communications network is described. In one embodiment, the system includes a first host operating in an active state at a first site in a communications network and a second host operating in a standby state at a second site in the communications network. The system also includes a first proxy located at the second site, wherein the first proxy is adapted to receive an original message addressed to a virtual Internet protocol (VIP) address associated with the first and second hosts to identify the first host as being in the active state, and, in response, to encapsulate the original message in at least one Internet protocol (IP) packet to form a tunneled message that includes the VIP address. The first proxy is also responsible for forwarding the tunneled message to the first site.