WILLIAM RICHARDS SEARS
Pilots at Emerson Gdn Rd, Lexington, MA

6681248, Jan 20, 2004

Apr 12, 2000

09/547944

William Sears - Lexington MA
Joseph Zahavi - Westford MA
Naimish Patel - North Andover MA

Sycamore Networks, Inc. - Chelmsford MA

G06F 15173

709223, 370254

In a network having a trace capability, a method to track the connectivity of the network uses the trace messages. A network manager creates a list of ports in the network and uses that list to track the connectivity. For each port, the manager first checks whether there is a current connection and if it finds one, records the connection. For the unconnected ports, the manager enables the transmission of a trace message that identifies the transmitting port. When a trace detected message is received from a port, the network manager updates the list of ports with the connection just reported and disables the trace message that was detected. A port sending a trace message that is not detected is marked as not connected in the list. The method is useful in high bandwidth circuit-based networks, such as optical networks, composed of links of many types and utilizing differing protocols.

8489670, Jul 16, 2013

Dec 26, 2007

11/964140

Gregory Fletcher - Cambridge MA, US
Kevin Harmon - Cambridge MA, US
Brandon Williams - Revere MA, US
William Sears - Lexington MA, US

Akamai Technologies, Inc. - Cambridge MA

G06F 15/16, G06F 15/173

709203, 709227, 709228, 709229, 709235, 709238

Applications that run on an overlay network-based managed service achieve high performance gains using a set of TCP optimizations. In a first optimization, a typical single TCP connection between a client and an origin server is broken into preferably three (3) separate TCP connections. These connections are: an edge-to-client connection, an edge-to-edge connection, and edge-to-origin connection. A second optimization replicates TCP state along the connection to increase fault tolerance. In this approach, preferably a given TCP connection is maintained on two servers. When a packet is received by one server, called the primary, its state is updated and then passed to a second server, called the backup. Only when the backup sends an acknowledgement back to the primary can it then send a TCP acknowledgement back to the host that originally sent the packet. Another optimization reduces connection establishment latency.

2013030, Nov 14, 2013

Jul 15, 2013

13/941962

Kevin Harmon - Cambridge MA, US
Brandon Williams - Revere MA, US
William Sears - Lexington MA, US

H04L 29/06

709203

Applications that run on an overlay network-based managed service achieve high performance gains using a set of TCP optimizations. In a first optimization, a typical single TCP connection between a client and an origin server is broken into preferably three (3) separate TCP connections. These connections are: an edge-to-client connection, an edge-to-edge connection, and edge-to-origin connection. A second optimization replicates TCP state along the connection to increase fault tolerance. In this approach, preferably a given TCP connection is maintained on two servers. When a packet is received by one server, called the primary, its state is updated and then passed to a second server, called the backup. Only when the backup sends an acknowledgement back to the primary can it then send a TCP acknowledgement back to the host that originally sent the packet. Another optimization reduces connection establishment latency.