Load balancing approach for scaling secure sockets layer...

Details Load balancing approach for scaling secure sockets layer... Load balancing approach for scaling secure sockets layer...

2006-09-19

2006-09-19

Barrón, Jr., Gilberto (Department: 2132)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

C709S227000, C709S235000, C709S237000

Reexamination Certificate

active

07111162

ABSTRACT:
A load-balancing approach for scaling Secure Sockets Layer (SSL) performance is disclosed. During a handshake phase of establishing a SSL connection among a client and server, a processor card identifier value, processor identifier value, and session index value are encoded in a session identifier value that is sent to a client. When the client subsequently resumes the SSL session, it provides the session identifier value, and the encoded values are used for routing the session to an SSL processor that has the negotiated security parameters for the session. In one embodiment, a load balancer distributes the SSL sessions across multiple SSL termination engines that actually carry out SSL processing, based on the card identifier value and the processor identifier. If one of the SSL termination engine cards fails, the load balancer card routes all sessions destined for the failed card to other cards that are operating. The SSL processor that receives such session data determines that it does not have a session table entry matching the session identifier, creates a new session identifier and gives the new session identifier to the client.

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Freier et al., “The SSL Protocol, Version 3.0,” <draft-freier-ssl-version3-02.txt>, Internet Engineering Task Force Transport Layer Security Working Group, Nov. 18, 1996.
Cisco Systems, Inc., Cisco CTE 1400 Series Hardware Installation Guide, 2001.
Cisco Systems, Inc., Cisco Content Transformation Engine 1400 Configuration Note, 2001, pp. 1-28.

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