Electrical computers and digital processing systems: multicomput – Computer-to-computer protocol implementing – Computer-to-computer data transfer regulating
Reexamination Certificate
2005-02-15
2005-02-15
Luu, Le Hien (Department: 2141)
Electrical computers and digital processing systems: multicomput
Computer-to-computer protocol implementing
Computer-to-computer data transfer regulating
C709S224000, C709S234000
Reexamination Certificate
active
06857025
ABSTRACT:
A highly scalable system and method for supporting (mim,max) based Service Level Agreements (SLA) on outbound bandwidth usage for a plurality of customers whose applications (e.g.,Web sites) are hosted by a server farm that consists of a very large number of servers. The system employs a feedback system that enforces the outbound link bandwidth SLAs by regulating the inbound traffic to a server or server farm. Inbound traffic is admitted to servers using a rate denoted as Rt(i,j), which is the amount of the ithcustomer's jthtype of traffic that can be admitted within a service cycle time to servers which support the ithcustomer. A centralized device computes Rt(i,j) based on the history of admitted inbound traffic to servers, the history of generated outbound traffic from servers, and the SLAs of various customers. The Rt(i,j) value is then relayed to one or more inbound traffic limiters that regulate the inbound traffic using the rates Rt(i,j) in a given service cycle time. The process of computing and deploying Rt(i,j) values is repeated periodically. In this manner, the system provides a method by which differentiated services can be provided to various types of traffic, the generation of output from a server or a server farm is avoided if that output cannot be delivered to end users, and revenue can be maximized when allocating bandwidth beyond the minimums.
REFERENCES:
patent: 6006264 (1999-12-01), Colby et al.
patent: 6119235 (2000-09-01), Vaid et al.
patent: 6502131 (2002-12-01), Vaid et al.
Appleby-Hougham Karen
Goldszmidt German
Lorrain Jean
Maruyama Kiyoshi
Cheung Wan Yee
Hartman Domenica N. S.
Hartman Gary M.
International Business Machines - Corporation
Luu Le Hien
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