Badrinath O Kollu

US Patent:

8599864, Dec 3, 2013

Filed:

Oct 8, 2009

Appl. No.:

12/575610

Inventors:

Daniel Ji Yong Park Chung - San Jose CA, US
Badrinath Kollu - San Jose CA, US
Sathish Kumar Gnanasekaran - Sunnyvale CA, US

Assignee:

Brocade Communications Systems, Inc. - San Jose CA

International Classification:

H04W 4/00
H04L 12/28

US Classification:

370401, 370328, 3703951

Abstract:

A Layer 2 network switch is partitionable into a plurality of switch fabrics. The single-chassis switch is partitionable into a plurality of logical switches, each associated with one of the virtual fabrics. The logical switches behave as complete and self-contained switches. A logical switch fabric can span multiple single-chassis switch chassis. Logical switches are connected by inter-switch links that can be either dedicated single-chassis links or logical links. An extended inter-switch link can be used to transport traffic for one or more logical inter-switch links. Physical ports of the chassis are assigned to logical switches and are managed by the logical switch. Legacy switches that are not partitionable into logical switches can serve as transit switches between two logical switches.

US Patent:

20110085557, Apr 14, 2011

Filed:

Oct 8, 2009

Appl. No.:

12/575603

Inventors:

Sathish Kumar Gnanasekaran - Sunnyvale CA, US
Badrinath Kollu - San Jose CA, US
Richard L. Hammons - Hollister CA, US
Ramkumar Vadivelu - San Jose CA, US
Dan Norbert Retter - Cupertino CA, US
Jianqiang Zhou - Milpitas CA, US
Ponpandiaraj Rajarathinam - Sunnyvale CA, US
Daniel Ji Yong Park Chung - San Jose CA, US

Assignee:

BROCADE COMMUNICATIONS SYSTEMS, INC. - San Jose CA

International Classification:

H04L 12/56

US Classification:

370401

Abstract:

A Layer network switch is partitionable into a plurality of switch fabrics. The single-chassis switch is partitionable into a plurality of logical switches, each associated with one of the virtual fabrics. The logical switches behave as complete and self-contained switches. A logical switch fabric can span multiple single-chassis switch chassis. Logical switches are connected by inter-switch links that can be either dedicated single-chassis links or logical links. An extended inter-switch link can be used to transport traffic for one or more logical inter-switch links. Physical ports of the chassis are assigned to logical switches and are managed by the logical switch. Legacy switches that are not partitionable into logical switches can serve as transit switches between two logical switches.

US Patent:

20110085558, Apr 14, 2011

Filed:

Oct 8, 2009

Appl. No.:

12/575608

Inventors:

Sathish Kumar Gnanasekaran - Sunnyvale CA, US
Chao Zhang - Sunnyvale CA, US
Daniel Ji Yong Park Chung - San Jose CA, US
Subramanian Lakshmanan - San Jose CA, US
Badrinath Kollu - San Jose CA, US

Assignee:

BROCADE COMMUNICATIONS SYSTEMS, INC. - San Jose CA

International Classification:

H04L 12/56

US Classification:

370401

Abstract:

A Layer network switch is partitionable into a plurality of switch fabrics. The single-chassis switch is partitionable into a plurality of logical switches, each associated with one of the virtual fabrics. The logical switches behave as complete and self-contained switches. A logical switch fabric can span multiple single-chassis switch chassis. Logical switches are connected by inter-switch links that can be either dedicated single-chassis links or logical links. An extended inter-switch link can be used to transport traffic for one or more logical inter-switch links. Physical ports of the chassis are assigned to logical switches and are managed by the logical switch. Legacy switches that are not partitionable into logical switches can serve as transit switches between two logical switches.

US Patent:

20110085569, Apr 14, 2011

Filed:

Oct 8, 2009

Appl. No.:

12/575611

Inventors:

Sathish Kumar Gnanasekaran - Sunnyvale CA, US
Subramanian Lakshmanan - San Jose CA, US
Tarun Bhatia - San Jose CA, US
Badrinath Kollu - San Jose CA, US
Xupei Liang - San Jose CA, US
Leifang Hu - Milpitas CA, US
Bei Wang - Palo Alto CA, US

Assignee:

BROCADE COMMUNICATIONS SYSTEMS, INC. - San Jose CA

International Classification:

H04L 12/56

US Classification:

370419

Abstract:

A Layer network switch is partitionable into a plurality of switch fabrics. The single-chassis switch is partitionable into a plurality of logical switches, each associated with one of the virtual fabrics. The logical switches behave as complete and self-contained switches. A logical switch fabric can span multiple single-chassis switch chassis. Logical switches are connected by inter-switch links that can be either dedicated single-chassis links or logical links. An extended inter-switch link can be used to transport traffic for one or more logical inter-switch links. Physical ports of the chassis are assigned to logical switches and are managed by the logical switch. Legacy switches that are not partitionable into logical switches can serve as transit switches between two logical switches.

US Patent:

20110110232, May 12, 2011

Filed:

Nov 6, 2009

Appl. No.:

12/614286

Inventors:

Vineet Abraham - Sunnyvale CA, US
Sathish Gnanasekaran - Sunnyvale CA, US
Rishi Sinha - San Jose CA, US
Badrinath Kollu - San Jose CA, US

Assignee:

Brocade Communications Systems, Inc. - San Jose CA

International Classification:

H04L 12/56

US Classification:

370235

Abstract:

Back pressure is mapped within a network, and primary bottlenecks are distinguished from dependent bottlenecks. Further, the presently disclosed technology is capable of performing network healing operations designed to reduce the data load on primary bottlenecks while ignoring dependent bottlenecks. Still further, the presently disclosed technology teaches identifying and/or suggesting a switch port for adding a node to the network. More specifically, various implementations analyze traffic load and back pressure in a network, identify primary and dependent bottlenecks, resolve the primary bottlenecks, collect new node parameters, and/or select a switch port for the new node. Further, a command can be sent to a selected switch to activate an indicator on the selected port. New node parameters may include new node type, maximum load, minimum load, time of maximum load, time of minimum load and type of data associated with the new node.

US Patent:

20120051738, Mar 1, 2012

Filed:

Mar 14, 2011

Appl. No.:

13/047513

Inventors:

David Aaron Skirmont - Los Gatos CA, US
Saumitra Buragohain - San Jose CA, US
Balakrishna Wusirika - Pleasanton CA, US
Badrinath Kollu - San Jose CA, US
Kyuh Kim - San Jose CA, US

Assignee:

BROCADE COMMUNICATIONS SYSTEMS, INC. - San Jose CA

International Classification:

H04B 10/08

US Classification:

398 25

Abstract:

A diagnostic testing utility is used to perform single link diagnostics tests including an electrical loopback test, an optical loopback test, a link traffic test, and a link distance measurement test. To perform the diagnostic tests, two ports at each end of a link are identified and then statically configured by a user. The ports will be configured as D_Ports and as such will be isolated from the fabric with no data traffic flowing through them. The ports will then be used to send test frames to perform the diagnostic tests.

US Patent:

20120218990, Aug 30, 2012

Filed:

Feb 21, 2012

Appl. No.:

13/401287

Inventors:

Srikara Subramanyan - San Jose CA, US
Badrinath Kollu - San Jose CA, US
Ganesh Kumar Murugesan - Medavakkan, IN
Nhan Trong Pham - Fremont CA, US
Sathish Kumar Gnanasekaran - Sunnyvale CA, US
Nadeem Kattangere - San Jose CA, US
Vinodh Ravindran - San Jose CA, US
Vidya Renganarayanan Vineet - Sunnyvale CA, US
Vidya Sagar Ravipati - San Jose CA, US
Blayne Rawsky - Boulder CO, US

Assignee:

BROCADE COMMUNICATIONS SYSTEMS, INC. - San Jose CA

International Classification:

H04L 12/50

US Classification:

370357

Abstract:

A network switch allows defining a virtual port worldwide name (VPWWN) and associating the VPWWN with an F_port of the network switch, for use by a host bus adaptor (HBA) connecting to the network switch. Both a default and a user VPWWN may be defined, with the user VPWWN typically taking precedence over the default VPWWN. A database of VPWWN associations may be used to ensure uniqueness of the user VPWWN. Where the HBA allows dynamic assignment of WWNs, the VPWWN may be pushed to the HBA. The VPWWNs may be deleted, and moved to another port as desired.

US Patent:

20140010092, Jan 9, 2014

Filed:

Mar 8, 2013

Appl. No.:

13/791367

Inventors:

Sathish Kumar Gnanasekaran - Sunnyvale CA, US
Badrinath Kollu - San Jose CA, US

International Classification:

H04L 12/26

US Classification:

370244

Abstract:

Specially configured host bus adaptors (HBAs) are located in the switches in the fabric or added to a management server. The HBAs are programmed to perform higher level protocol analysis, such as monitoring exchanges, LUNs, and VM/LUN/LBA ranges and developing SCSI statistics on the flows. The HBA can detect protocol exceptions. When located in the switches, mirroring of the desired frames is simplified as all routing is handled internally to the switch, with the HBA/switch combination providing data over the management Ethernet port to a management server. To maintain performance, preferably only the protocol relevant frames are mirrored to the HBAs. With the data provided from the HBAs, in conjunction with the normal diagnostic and statistics data available from the switch itself, the management server can correlate events end-to-end, correlate I/O error statistics collected from the fabric with server statistics, and correlate performance statistics collected from the fabric with server statistics.