International Business Machines Corporation

Cisco Technology, Inc.

Christina Hien Tran

Tram Thi Nguyen

Thao Bich Bui

Thomas James Edsall

Silvano Gai

Yichou Lin

Daniel R Ullum

Yan-ming Chen

A network traffic shaper provides high-speed, multi-level shaping. The traffic shaper is in communicating relationship with a forwarding engine, and includes a queue controller having a plurality of queues for storing messages, a scheduler for computing release times, at least one time-searchable memory and a corresponding memory controller. Each queue is preferably associated with a corresponding traffic specifier, and a release time is computed for each queue and stored in the time-searchable memory. When a stored release time expires, the message at the head of the corresponding queue is retrieved and is either moved into a different queue or forwarded by the network device. By moving messages through two or more queues, each having its own release time computed in response to a different traffic specifier, the traffic shaper can perform multi-level shaping on network messages.

Method and apparatus for performing high-speed traffic shaping

A device adapter maintains a device polling table in memory that can be dynamically changed in response to disk drive device failures and is updated with each poll so that failed devices can be quickly deleted from the table and alternate device polling mapping can be achieved. A system reconfiguration is not necessary to implement the modifications to the system processing. The device adapter is capable of a greater variety of processing tasks than is conventional, including determining cylinder head position and copying data that otherwise would be performed by a control unit.

Method and apparatus for polling and selecting any paired device in any

Growing community of inventors

San Jose, CA, United States of America

Christina Hien Tran