Ramesh K Mishra

US Patent:

20130034104, Feb 7, 2013

Filed:

Aug 2, 2011

Appl. No.:

13/196717

Inventors:

Kiran Yedavalli - San Jose CA, US
Ramesh Mishra - San Jose CA, US

Assignee:

Telefonaktiebolaget L M Ericsson (publ) - Stockholm

International Classification:

H04L 12/56
H04L 12/28

US Classification:

370400

Abstract:

A method and system is implemented in a network node that functions as a controller for a domain in a split architecture network. The domain comprises a plurality of flow switches, where the plurality of flow switches implement a data plane for the split architecture network and the controller implements a control plane for the split architecture network that is remote from the data plane. The method and system configure the plurality of flow switches to efficiently handle each type of broadcast packet in the domain of the split architecture network without flooding the domain with the broadcast packets to thereby reduce a number of broadcast packets forwarded within the domain.

US Patent:

20130125124, May 16, 2013

Filed:

Jan 25, 2013

Appl. No.:

13/750325

Inventors:

TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) - Stockholm, SE
Ramesh Mishra - San Jose CA, US

Assignee:

TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) - Stockholm

International Classification:

G06F 9/455
G06F 17/30

US Classification:

718 1, 707609

Abstract:

A tenant database is used to add tenant ID information to the cloud network manager (CNM) address mapping table to isolate tenant specific data to a tenant ID to the CNM. The CNM maintains a mapping among a plurality of items in a plurality of databases or tables. The plurality of databases or tables include a tenant database (DB), a tenant identifier to tenant label (TITL) table, a top of rack server label to virtual switch link label (TLVLL) table, a label mapping table (SMVL), and a CNM address mapping table. The CNM uses the plurality of databases to generate tenant specific labels that are added to packets sent between tenant virtual machines (VMs).

US Patent:

20130163426, Jun 27, 2013

Filed:

Dec 22, 2011

Appl. No.:

13/335902

Inventors:

LUDOVIC BELIVEAU - SAN JOSE CA, US
ERIC DYKE - Ville Saint-Laurent, CA
RAMESH MISHRA - SAN JOSE CA, US
RITUN PATNEY - SAN JOSE CA, US

International Classification:

H04L 12/26

US Classification:

370235

Abstract:

A network device acting as a forwarding element within a software-defined network receives a representation of configurable flow table definitions and configurable logic for selecting between flow tables. The network device creates a flow table based on each of the configurable flow table definitions and installs the configurable logic for selecting between flow tables. The network device receives data to populate configurable key columns and action columns of the flow tables and populates the flow tables using that data. The network device then selects from forwarding decisions for packets according to the configurable logic for selecting between flow tables, the flow tables, and each packet's values in relevant header fields required by the configurable logic.

US Patent:

20130163427, Jun 27, 2013

Filed:

Dec 22, 2011

Appl. No.:

13/335903

Inventors:

LUDOVIC BELIVEAU - SAN JOSE CA, US
ERIC DYKE - VILLE SAINT-LAURENT, CA
RAMESH MISHRA - SAN JOSE CA, US
RITUN PATNEY - SAN JOSE CA, US

International Classification:

H04L 12/26

US Classification:

370235

Abstract:

A system for flexible and extensible flow processing includes a first network device to act as a controller within a software-defined network. The first network device receives a processing definition, translates the processing definition to create a parser configuration package and transmit the parser configuration package to a plurality of forwarding elements, and transmit data to populate flow tables within the plurality of forwarding elements. The system also includes a second and third network device, each acting as a flow switching enabled forwarding element and able to receive a parser configuration package from the first network device. The second network device compiles the parser configuration package into machine code, which is executed on a processor to perform packet processing. The third network device includes a co-processor to execute the parser configuration package to perform packet processing. The parser configuration package includes representations of header, table definition, and stack instructions.

US Patent:

20130163475, Jun 27, 2013

Filed:

Dec 22, 2011

Appl. No.:

13/335900

Inventors:

LUDOVIC BELIVEAU - SAN JOSE CA, US
ERIC DYKE - Ville Saint-Laurent, CA
RAMESH MISHRA - SAN JOSE CA, US
RITUN PATNEY - SAN JOSE CA, US

International Classification:

H04L 12/28

US Classification:

370257

Abstract:

A network device acts as a controller within a software-defined network. The network device receives a processing definition, which includes a representation of configurable definitions of protocols, configurable flow table definitions, and configurable logic for selecting between flow tables defined by the configurable flow table definitions. The network device translates the processing definition to create a parser configuration package, which is distributed to a plurality of forwarding elements. This distribution causes each forwarding element to create a flow table based on each of the configurable flow table definitions. The flow tables include one or more configurable key columns and a set of one or more action columns to store forwarding decisions. The network device transmits data to populate the configurable key columns and action columns of the flow tables created within each of the plurality of forwarding elements.

US Patent:

20130176850, Jul 11, 2013

Filed:

Jan 9, 2012

Appl. No.:

13/346073

Inventors:

Ramesh Mishra - San Jose CA, US
Ludovic Beliveau - San Jose CA, US

Assignee:

Telefonaktiebolaget L M Ericcson (publ) - Stockholm

International Classification:

H04L 12/26

US Classification:

370235

Abstract:

A method enables a switch in a split-architecture network to provide high speed packet processing and enhanced network functionalities that are not supported by the OpenFlow. The switch receives a packet from a network through an input port of the switch, and matches header fields in the packet against table entries in flow tables to identify an action to be taken. The flow tables are part of an OpenFlow pipeline. The identified action is to direct the packet to a designated processing unit in the switch. The OpenFlow pipeline forwards the packet to the designated processing unit via a communication channel in the switch. The designated processing unit processes the packet with the enhanced network functionalities, and injects the packet back to one of the flow tables before transmission of the packet to the network through an egress port of the switch.

US Patent:

20170149610, May 25, 2017

Filed:

Feb 3, 2017

Appl. No.:

15/424717

Inventors:

- Stockholm, SE
Ramesh Mishra - San Jose CA, US

International Classification:

H04L 12/24
H04L 12/931
H04L 29/12
H04L 12/721

Abstract:

A method and system is implemented in a network node that functions as a controller for a domain in a split architecture network. The domain comprises a plurality of flow switches, where the plurality of flow switches implement a data plane for the split architecture network and the controller implements a control plane for the split architecture network that is remote from the data plane. The method and system configure the plurality of flow switches to efficiently handle each type of broadcast packet in the domain of the split architecture network without flooding the domain with the broadcast packets to thereby reduce a number of broadcast packets forwarded within the domain.

US Patent:

20150139245, May 21, 2015

Filed:

Jan 23, 2015

Appl. No.:

14/603777

Inventors:

- Stockholm, SE
Ramesh Mishra - San Jose CA, US

International Classification:

H04L 12/947
H04L 12/931
H04L 12/46
H04L 12/933

US Classification:

370401

Abstract:

A method and system is implemented in a network node that functions as a controller for a domain in a split architecture network. The domain comprises a plurality of flow switches, where the plurality of flow switches implement a data plane for the split architecture network and the controller implements a control plane for the split architecture network that is remote from the data plane. The method and system configure the plurality of flow switches to efficiently handle each type of broadcast packet in the domain of the split architecture network without flooding the domain with the broadcast packets to thereby reduce a number of broadcast packets forwarded within the domain.