Rangaswamy Jagannathan

8199641, Jun 12, 2012

Jul 25, 2008

12/179703

Rangaswamy Jagannathan - Sunnyvale CA, US
Rosanna Lee - Palo Alto CA, US
Derek Sanders - Saratoga CA, US
Xiaohong Pan - Fremont CA, US
Kishor Kakatkar - Santa Clara CA, US

Xangati, Inc. - Cupertino CA

H04L 12/26
G06F 15/173

370229, 709224

A network monitoring system includes devices receiving network traffic information, and generating at least partial results relating to network symptoms. Those partial results are forwarded to devices processing those partial results and generating information relating to problems in response to those symptoms. Problems are reported to users or sent as notifications. In one embodiment, information relating to network traffic is monitored both by a first set of devices associated with source addresses for that network traffic and a second set of devices associated with destination addresses for that network traffic. Information received by that first set of devices includes information relating to both the source address and destination address of network traffic. That first set of devices processes information relating to the source address of network traffic and forwards information relating to the destination address of network traffic to that second set of devices.

8451731, May 28, 2013

Jul 25, 2008

12/180193

Rosanna Lee - Palo Alto CA, US
Hong Zhu - Diamond Bar CA, US
Rangaswamy Jagannathan - Sunnyvale CA, US
Xiaohong Pan - San Ramon CA, US
Derek Sanders - Saratoga CA, US
Kishor Kakatkar - Pune, IN
Jing Liu - Cupertino CA, US

Xangati, Inc. - Cupertino CA

H04J 1/16
H04J 3/14
G06F 15/173

370235, 370253, 709224

A network monitoring device includes a flow processing element, disposed to receive flow information relating to network flows, and to generate a set of virtual packets, each representing a portion of a network flow. The virtual packets are maintained in a time-sequential order, and read by elements of the network monitoring device to generate information relating to network traffic, such as symptoms affecting the communication network, problems affecting the communication network, and otherwise. The network monitoring device randomly samples virtual packets, with at least one of two effects: (1) flow information from traffic reporting devices that are themselves sampling at differing rates can be equalized, with the effect of standardizing information from all of them; (2) the network monitoring device itself can restrict its attention to a fraction of all virtual packets, with the effect of keeping up with a relatively large number of virtual packets.

8639797, Jan 28, 2014

Jul 25, 2008

12/180243

Xiaohong Pan - Fremont CA, US
Kishor Kakatkar - Santa Clara CA, US
Derek Sanders - Saratoga CA, US
Rangaswamy Jagannathan - Sunnyvale CA, US
Jing Liu - Cupertino CA, US
Rosanna Lee - Palo Alto CA, US

Xangati, Inc. - Cupertino CA

G06F 15/173

709224, 709223, 709225, 709226

A network monitoring system maintains both information regarding historical activity of a network, and information regarding emergent activity of the network. Comparison of historical activity of the network with emergent activity of the network allows the system to determine whether network activity is changing over time. The network monitoring system maintains data structures representing a p. d. f. for observable values of network parameters. Recent activity of the network can be compared with both the p. d. f. for historical activity and for emergent activity to aid in determining whether that recent activity is within the realm of normal, and whether network activity is changing over time. The network monitoring system adjusts that information regarding historical activity of a network in response to emergent activity of that network. The network monitoring device determines information regarding time-dependent activity of that network in response to spectral analysis regarding historical activity of that network.

8645527, Feb 4, 2014

Jul 25, 2008

12/180333

Rosanna Lee - Palo Alto CA, US
Xiaohong Pan - Fremont CA, US
Rangaswamy Jagannathan - Sunnyvale CA, US
Derek Sanders - Saratoga CA, US
Kishor Kakatkar - Kothrud, IN

Xangati, Inc. - Cupertino CA

G06F 15/16
G06F 15/173
G06F 3/00

709224, 709201, 709205, 709245, 709246, 710 29

A network monitoring device includes a data structure for maintaining information about endpoints involved in network flows. Each endpoint, either a source or a destination for a network flow, has information maintained in a modified binary trie, having a branch for each bit of the source or destination address, but with interior nodes having only a single child node elided. A pruning thread is given a limited amount of time for operation, with the effect that the data structure is maintained available for use except for only that limited amount of time. In the event that the pruning thread is unable to prune the entire data structure, it maintains a marker indicating where last it left off, and returns to that location in the data structure at a later pruning operation.

20030115470, Jun 19, 2003

Dec 14, 2001

10/014486

Steve Cousins - Cupertino CA, US
Jeff Breidenbach - Mountain View CA, US
Rangaswamy Jagannathan - Sunnyvale CA, US

G06K009/00

713/179000, 382/137000

Apparatus, methods, and articles of manufacture consistent with the present invention provide a check validation scheme wherein a payor's signature is digitized, encrypted and embedded on the front of the check using glyphs. When the payor seeks to convert a blank check into a negotiable instrument, the user fills out the check and signs it. When the check is presented to a bank for payment, a teller using a decoding device, decodes and decrypts the digitized signature such that a human-readable image of the digitized signature can be seen on a screen for comparison with the payor's scripted signature. If the two signatures are identical, the check is honored.

20220294688, Sep 15, 2022

Jun 1, 2022

17/805022

- Palo Alto CA, US
Rangaswamy Jagannathan - Sunnyvale CA, US
Michael Bello - Mountain View CA, US
Ricardo A. Negrete - Scotts Valley CA, US
Elizaveta Tavastcherna - San Jose CA, US
Vitoo Suwannakinthorn - San Jose CA, US

Virtual Instruments Worldwide, Inc. - Palo Alto CA

H04L 41/0803
H04L 67/10
H04L 9/40
H04L 41/14

A method comprising discovering workload attributes and identify dependencies, receiving utilization performance measurements including memory utilization measurements of at least a subset of workloads, grouping workloads based on the workload attributes, the dependencies, and the utilization performance measurements into affinity groups, determining at least one representative synthetic workload for each affinity group, each representative synthetic workload including a time slice of a predetermined period of time when there are maximum performance values for any number of utilization performance measurements among virtual machines of that particular affinity group, determining at least one cloud service provider (CSP)'s cloud services based on performance of the representative synthetic workloads, and generating a report for at least one of the representative synthetic workloads, the report identifying the at least one of the representative synthetic workloads and the at least one CSP's cloud services including cloud workload cost.

20210400110, Dec 23, 2021

Aug 15, 2021

17/402573

- San Jose CA, US
Rangaswamy Jagannathan - San Jose CA, US
Michael Bello - Mountain View CA, US
Ricardo A. Negrete - Scotts Valley CA, US
Elizaveta Tavastcherna - San Jose CA, US
Vitoo Suwannakinthorn - San Jose CA, US

Virtual Instruments Worldwide, Inc. - San Jose CA

H04L 29/08
H04L 12/26

A method comprising discovering workload attributes and identify dependencies, receiving utilization performance measurements including memory utilization measurements of at least a subset of workloads, grouping workloads based on the workload attributes, the dependencies, and the utilization performance measurements into affinity groups, determining at least one representative synthetic workload for each affinity group, each representative synthetic workload including a time slice of a predetermined period of time when there are maximum performance values for any number of utilization performance measurements among virtual machines of that particular affinity group, determining at least one cloud service provider (CSP)'s cloud services based on performance of the representative synthetic workloads, and generating a report for at least one of the representative synthetic workloads, the report identifying the at least one of the representative synthetic workloads and the at least one CSP's cloud services including cloud workload cost.

20210067426, Mar 4, 2021

Jun 1, 2010

12/791704

Kishor Kakatkar - Kothrud, IN
Roy Nakashima - San Jose CA, US
Rosanna Lee - Palo Alto CA, US
Jing Liu - Cupertino CA, US
Derek Sanders - Saratoga CA, US
Rangaswamy Jagannathan - Sunnyvale CA, US
David Messina - Los Gatos CA, US

XANGATI, INC. - Cupertino CA

H04L 12/26
H04L 12/24
G06F 3/048

Network monitoring views can be recorded, replayed and shared. A monitoring system receives monitoring data, in response to which a monitoring view can be constructed. The monitoring data is maintained in memory or mass storage. One or more monitoring views can later be constructed in response to user preferences, even if those users would not have known to select those particular preferences or construct those particular monitoring views at the time. The monitoring views constructed in response to that monitoring data can be presented to users in a simulation of the problem, as if it were occurring at that time. Users can send particular monitoring views to others, with both the effects that the monitoring view can be preserved as part of a trouble report, and the persons receiving the monitoring view can have useful insight into what problem the user has pointed to.