The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2007
Filed:
Jun. 11, 2003
Ruppert Koch, Santa Barbara, CA (US);
Sanjay Hortikar, Goleta, CA (US);
Louise E. Moser, Santa Barbara, CA (US);
Peter M. Melliar-smith, Santa Barbara, CA (US);
Ruppert Koch, Santa Barbara, CA (US);
Sanjay Hortikar, Goleta, CA (US);
Louise E. Moser, Santa Barbara, CA (US);
Peter M. Melliar-Smith, Santa Barbara, CA (US);
Availigent, Inc., San Jose, CA (US);
Abstract
Methods of transparent connection failover allowing a remote computer (i.e., a client), to continue to use a network connection to communicate with one of at least two or more other computers (i.e., the backup servers) over a network, when one of the other computers (i.e., the primary server) fails. With the mechanisms of this invention, there is no need for the client to establish a new connection to a backup server when the primary server fails. The failover is preferably executed within a bridge layer between the TCP layer and the IP layer of the server's TCP/IP stack. No modifications are required to the network infrastructure, the client's TCP/IP stack, the client application or the server application. The methods support active or semi-active replication of the server application, and do not require rollback of the application during failover. The invention also provides mechanisms for bringing up new backup servers.