Nortel Networks Corporation

Kerry M Hannigan

James A Philippou

Shawn Mamros

Daniel Boudreau

John J O'Hara

J Martin Borden

Bernard Farrell

Gary W Hoglund

The present invention is a method and apparatus to balance load in a cluster of switches in a network. The switches include a local switch and one or more remote switches. Messages containing load information of the switches are exchanged among the switches. One of the switches is selected to respond to a connection request to the local switch based on a metric.

Network switch load balancing

Methods for initializing an uninitialized box in a data communications network. In one embodiment, the Internet protocol (IP) address, subnet mask and default gateway of a network switch or box is remotely initialized over a data communications network from a configuration utility on a host computer. In one embodiment, the configuration utility broadcasts a service announcement over the network indicating that it is available to initialize uninitialized boxes. An uninitialized box on the network replies to the service announcement. In one embodiment, the reply from the uninitialized box includes the serial number of the uninitialized box. In one embodiment, after the configuration utility receives the reply from the uninitialized box, the configuration utility prompts a network administrator to enter an IP address, subnet mask and default gateway to assign to the uninitialized box. In one embodiment, the configuration utility broadcasts an initialization message over network including the serial number of the uninitialized box and the entered IP address, subnet mask and default gateway. In one embodiment, after the uninitialized box receives the initialization message, the uninitialized box acknowledges their receipt indicating that the uninitialized box has been initialized using the entered IP address, subnet mask and default gateway. In one embodiment, the configuration utility then accesses a configuration Web page of the formerly uninitialized box over the network utilizing the assigned IP address to further configure the formerly uninitialized box.

Method for initializing a box on a data communications network

A method and apparatus for determining the reachability of a remote computer from a local computer through a secured communications link through the Internet. In one embodiment, the secured ISAKMP/Oakley communications link is established between a remote computer and a local computer through the Internet. A protected keepalive message is transmitted by the local computer to the remote computer in the event that the communications link has been idle for a period of time. The protected keepalive message is not a re-key request by the local computer to renegotiate the policy/key(s) of the secured communications link to the Internet. In one embodiment, the protected keepalive message is a protected ISAKMP/Oakley command to which a protected acknowledgement must be supplied. If a protected acknowledgement is received from the remote box by the local box in response to the protected keepalive message, then it is assumed that the remote box is still reachable. However, if the protected acknowledgement is not received from the remote box in response to the protected keepalive message, then it is assumed that their remote box is no longer reachable. In this case, the secured communications link between the remote box and the local box is terminated by the local box.

Protected keepalive message through the internet

Growing community of inventors

Boston, MA, United States of America

Kerry M Hannigan