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. 12, 2011
Filed:
Apr. 16, 2002
Sumandra Majee, San Jose, CA (US);
Sumandra Majee, San Jose, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A standby content switch module maintains a connection after failure of the active CSM by maintaining a replicate connection state of the connection state of the active CSM. The active CSM transmits a replicate TCP SYN segment to the standby CSM to replicate a connection state on the standby CSM. The replicate SYN is constructed to appear to originate from the client originating the connection to the active CSM. The replicate SYN further includes encoded information enabling the standby CSM to distinguish the replicate SYN from an actual SYN. The replicate SYN frame contains information needed to create a connection state on the standby CSM that is a replica of the connection state on the active CSM.