Vishnu Kant Varma

age ~50

from Milpitas, CA

Get Report

Also known as:

Connected to:

Vishnu Varma Phones & Addresses

view source

Ethernet Performance Monitoring
view source
US Patent:

7957295, Jun 7, 2011
Filed:

Nov 2, 2007
Appl. No.:

11/934576
Inventors:

Vishnu Kant Varma - Santa Clara CA, US
Wenwei Weng - Milpitas CA, US
Samer Salam - Vancouver, CA
Lio Cheng - Fremont CA, US
Assignee:

Cisco Technology, Inc. - San Jose CA
International Classification:

H04L 12/26
G06F 11/00
G06F 15/16
H04J 3/06
US Classification:

370241, 370231, 370508, 709233
Abstract:

One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.

Ethernet Performance Monitoring
view source
US Patent:

8400929, Mar 19, 2013
Filed:

May 26, 2011
Appl. No.:

13/116607
Inventors:

Vishnu Kant Varma - Santa Clara CA, US
Wenwei Weng - Milpitas CA, US
Samer Salam - Vancouver, CA
Lio Cheng - Fremont CA, US
Assignee:

Cisco Technology, Inc. - San Jose CA
International Classification:

G06F 11/00
H04J 3/14
H04J 3/06
H04L 12/28
US Classification:

370241, 370236, 370516, 370394
Abstract:

One embodiment is a source router that monitors the performance of an Ethernet network. The source router generates an Ethernet connectivity check request frame that includes a transmission timestamp, and transmits the Ethernet connectivity check request frame to a destination router. The source router receives a reply from the destination router that is transmitted in response to receiving the Ethernet connectivity check request frame and determines a round trip time between the source router and the destination router based on a time of receipt of the reply and the transmission timestamp.

Auto Probing Endpoints For Performance And Fault Management
view source
US Patent:

8451745, May 28, 2013
Filed:

Nov 19, 2010
Appl. No.:

12/950916
Inventors:

Wenwei Weng - Milpitas CA, US
Minghui Zhu - San Jose CA, US
Vishnu Kant Varma - Santa Clara CA, US
Assignee:

Cisco Technology, Inc. - San Jose CA
International Classification:

H04L 12/58
US Classification:

370252, 370389, 370402, 370404, 709223, 709224, 709225
Abstract:

In one embodiment, a method for automatically probing endpoint in a network for performance and fault management is provided. The method may comprise receiving instructions to auto probe endpoints, the instructions comprising probe characteristics and endpoint indicators. The method may further comprise querying an information base to identify endpoints and to obtain information on the identified endpoints that conform to the endpoint indicators. Based on the instructions and the information obtained for the identified endpoints, one or more probe packets may be generating to be transmitted to the identified endpoints. The generated probe packets may further be scheduled for transmission to the identified endpoints. New endpoints may continue to get discovered based on a notification mechanism which exists. Likewise, endpoints leaving the discovery domain may be identified.

Method And Apparatus To Schedule Multiple Probes For Active Or Passive Monitoring Of Networks
view source
US Patent:

8547855, Oct 1, 2013
Filed:

Mar 21, 2006
Appl. No.:

11/277058
Inventors:

Tom Zingale - Santa Cruz CA, US
Vishnu Kant Varma - Santa Clara CA, US
Emmanuel Tychon - Fexhe-le-Haut-Clocher, BE
Wenwei Weng - Pleasanton CA, US
Assignee:

Cisco Technology, Inc. - San Jose CA
International Classification:

H04L 12/24
G06F 15/173
H04W 24/00
H04W 24/02
H04W 24/04
H04W 24/06
H04W 24/08
H04W 24/10
US Classification:

370252, 370241, 3702411, 709223, 709224
Abstract:

An apparatus and method for scheduling multiple probes for monitoring of a network is disclosed. The method comprises identifying a group of multiple probes to be deployed over an IP network, each of the multiple probes measuring different performance metrics in the network. A schedule period is also identified, in which to schedule the deployment of the multiple probes in the group. An even or random mode of scheduling may be specified. In response the even mode of scheduling, the apparatus may schedule the deployment of the multiple probes in the defined group periodically in the schedule period and/or schedules the group of probes periodically. Alternatively, in response to the random mode of scheduling, the scheduling apparatus may schedule the deployment of each of the multiple probes in the defined group at random intervals and/or schedules the group of probes randomly.

Method And Apparatus To Schedule Multiple Probes For Active Or Passive Monitoring Of Networks
view source
US Patent:

20140022928, Jan 23, 2014
Filed:

Sep 19, 2013
Appl. No.:

14/031180
Inventors:

Vishnu Kant Varma - Santa Clara CA, US
Emmanuel Tychon - Fexhe-le-Haut-Clocher, BE
Wenwei Weng - Milpitas CA, US
Assignee:

Cisco Technology, Inc. - San Jose CA
International Classification:

H04L 12/26
US Classification:

370252
Abstract:

An apparatus and method for scheduling multiple probes for monitoring of a network is disclosed. The method comprises identifying a group of multiple probes to be deployed over an IP network, each of the multiple probes measuring different performance metrics in the network. A schedule period is also identified, in which to schedule the deployment of the multiple probes in the group. An even or random mode of scheduling may be specified. In response the even mode of scheduling, the apparatus may schedule the deployment of the multiple probes in the defined group periodically in the schedule period and/or schedules the group of probes periodically. Alternatively, in response to the random mode of scheduling, the scheduling apparatus may schedule the deployment of each of the multiple probes in the defined group at random intervals and/or schedules the group of probes randomly.

Auto Probing Endpoints For Performance And Fault Management
view source
US Patent:

7848337, Dec 7, 2010
Filed:

Nov 14, 2006
Appl. No.:

11/559579
Inventors:

Wenwei Weng - Milpitas CA, US
Minghui Zhu - San Jose CA, US
Vishnu Kant Varma - Santa Clara CA, US
Assignee:

Cisco Technology, Inc. - San Jose CA
International Classification:

H04L 12/58
US Classification:

370401, 370402, 370404, 370389, 709223, 709224, 709225
Abstract:

In one embodiment, a method for automatically probing endpoint in a network for performance and fault management is provided. The method may comprise receiving instructions to auto probe endpoints, the instructions comprising probe characteristics and endpoint indicators. The method may further comprise querying an information base to identify endpoints and to obtain information on the identified endpoints that conform to the endpoint indicators. Based on the instructions and the information obtained for the identified endpoints, one or more probe packets may be generating to be transmitted to the identified endpoints. The generated probe packets may further be scheduled for transmission to the identified endpoints. New endpoints may continue to get discovered based on a notification mechanism which exists. Likewise, endpoints leaving the discovery domain may be identified.