Dan H Li

US Patent:

7257628, Aug 14, 2007

Filed:

Jun 23, 2003

Appl. No.:

10/602971

Inventors:

Barbara Liskov - Waltham MA, US
Dmitry Stavisky - Wayland MA, US
Stephen Jeffrey Morris - Harvard MA, US
Dan Li - Sunnyvale CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 15/173
G06F 15/16

US Classification:

709223, 709227, 709238

Abstract:

Mechanisms and techniques provide a system that operates in a computerized device(s) to establish a data distribution path for content within a content distribution network by receiving a network topology definition defining at least one hierarchical interconnection of network groups. Each network group comprises at least one content engine. The system also receives a channel definition comprising a selection of a plurality of content engines that are to distribute content within the content distribution network. The plurality of content engines in the channel definition is selected from content engines within the network groups defined within the network topology definition. The system determines an assignment of at least one root content engine within the channel definition and applies a content distribution path determination technique to the network topology definition in relation to the channel definition to determine a set of content distribution paths in the content distribution network to be used for distribution of content from the root content engine(s) to the content engines defined in the channel definition.

US Patent:

7373394, May 13, 2008

Filed:

Jun 30, 2003

Appl. No.:

10/610173

Inventors:

Dan Li - Sunnyvale CA, US
Arun Desai - Fremont CA, US
Zheng Yang - Fremont CA, US
Kenneth Mueller, II - Santa Barbara CA, US
Stephen Morris - Harvard MA, US
Dmitry Stavisky - Wayland MA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 15/16
H04L 12/56

US Classification:

709219, 709227, 709230, 370389

Abstract:

An apparatus and method for defining content distribution paths in a content distribution network integrate unicast and multicast connections. Content engines in the content distributed network are organized into channels with a master content engine maintaining specific content. The content distribution network is further organized into a distribution hierarchy based on network topology and channel definitions, first by establishing unicast paths through the content distributed network and then by integrating multicast paths into the unicast hierarchy. The further organization of the content distribution network establishes distribution trees from the channel masters to the network edges.

US Patent:

7385978, Jun 10, 2008

Filed:

Feb 19, 2004

Appl. No.:

10/782649

Inventors:

Zheng Yang - Fremont CA, US
Dan Li - Sunnyvale CA, US
Shanchi Zhan - Sunnyvale CA, US
Kenneth Mueller, II - Santa Barbara CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/28

US Classification:

370390, 370473

Abstract:

A system for reliable multicast distribution includes a primary content engine and a backup content engine sender. The primary content engine sender sends out a multicast message of content to selected content engine receivers. The sender waits for negative acknowledgments from the selected content engine receivers declaring that content was not received. If a negative acknowledgment is received, the sender resends the multicast message a predetermined number of times. If the content is still not received after the number of multicast passes is exhausted, the sender sends out unicast messages to those receivers still requesting content. If the primary sender does not respond to a negative acknowledgment, the receiver sends a second negative acknowledgment to the backup multicast sender. The backup responds with the data requested in the negative acknowledgment and so is able to begin data distribution at the point where the primary sender left off without maintaining synchronicity with the primary sender.

US Patent:

7725435, May 25, 2010

Filed:

Dec 15, 2003

Appl. No.:

10/736436

Inventors:

Dan Li - Sunnyvale CA, US
Ivy K. Lui - San Carlos CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 7/00

US Classification:

707626, 707637

Abstract:

A system for providing a dynamic portal page in a content distributed network responds to a client request by generating the dynamic portal page at a content engine. The content engine has a portal template with at least one dynamic portion. The content engine writes into the at least one dynamic portion of the portal template links to content cached at the content engine. The content engine also writes into the at least one dynamic portion of the portal template information about availability of content not yet cached at the content engine.

US Patent:

7814284, Oct 12, 2010

Filed:

Jan 18, 2007

Appl. No.:

11/624352

Inventors:

Gideon Glass - Toronto, CA
Maxim Martynov - Los Gatos CA, US
Qiwen Zhang - San Jose CA, US
Etai Lev Ran - Sunnyvale CA, US
Dan Li - Sunnyvale CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 12/00

US Classification:

711154, 711158, 704278, 704258, 704504, 704269

Abstract:

A data redundancy elimination system. In particular implementations, a method includes storing in a memory one or more aggregation trees, each aggregation tree comprising one or more base chunk nodes and one or more super chunk nodes, wherein each base chunk node comprises a chunk signature and corresponding raw data, and wherein super chunk nodes correspond to child base chunk nodes and include a chunk signature; receiving a data block; dividing the data block into a plurality of base chunks, each base chunk having a degree value characterizing the occurrence probability of the base chunk; computing chunk signatures for the plurality of base chunks; applying a super chunk rule to contiguous sequences of base chunks of the plurality of base chunks to create one or more aggregation trees, wherein the super chunk rule aggregates base chunks based on the respective occurrence probabilities of the base chunks; identifying one or more nodes in the one or more created aggregation trees that match corresponding nodes of the aggregation trees in the memory; compressing the received data block based on the identified nodes; and conditionally adding the one or more created aggregation trees to the memory.

US Patent:

20130047149, Feb 21, 2013

Filed:

Aug 19, 2011

Appl. No.:

13/213365

Inventors:

Yongyong Xu - Sunnyvale CA, US
Dan Li - Sunnyvale CA, US

International Classification:

G06F 9/445

US Classification:

717175

Abstract:

A system and method for a new type of software repository and remote execution solution where any native application can be run from within a web page is disclosed. Users now has a much easier way to launch, run or execute any software directly from within a server or server cloud without the need of manually download and installation. The system further allows software run inside an isolated environment to protect user's local environment.

US Patent:

20140025841, Jan 23, 2014

Filed:

Jul 19, 2012

Appl. No.:

13/552696

Inventors:

Dan Li - Sunnyvale CA, US
Dipak Punnoran Koroth - Fremont CA, US
Ming Tan - San Jose CA, US
Martin Ostrowski - Sunnyvale CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

G06F 15/16

US Classification:

709232

Abstract:

In one embodiment, redundancy elimination for web caching may be provided. Upon receiving a request for a content object, a determination of whether the content object is cached may be made. In response to determining that the content object is not cached, the requested content object may be retrieved and, if the content object is associated with an aggregate popularity exceeding a caching threshold, the content object may be cached before providing the requested content object.

US Patent:

20140044127, Feb 13, 2014

Filed:

Aug 10, 2012

Appl. No.:

13/571786

Inventors:

Dan Li - Sunnyvale CA, US
Dipak Punnoran Koroth - Fremont CA, US
Ming Tan - San Jose CA, US
Martin Ostrowski - Sunnyvale CA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04L 12/56

US Classification:

370389

Abstract:

In some embodiments, a request for a content object may be received as a data packet. Upon determining that the content object is not cached, an element of the data packet may be modified and the modified data packet may be forwarded toward a content provider of the content object.