Srikrishnan S Venkataraman from Cupertino, CA, age 51

Us Patents

Fast Upstream Source Failure Detection
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US Patent:

20110063973, Mar 17, 2011
Filed:

Jan 8, 2010
Appl. No.:

12/654909
Inventors:

Srikrishnan VenkataRaman - Santa Clara CA, US
Sandeep Bishnoi - San Jose CA, US
Pradeep G. Jain - Sunnyvale CA, US
Kanwar D. Singh - Mountain View CA, US
International Classification:

G06F 11/00
H04L 12/26
US Classification:

370228, 370242
Abstract:

One example embodiment of the method includes receiving first control packets, by a first node, from a source node. The first control packets indicate the status of the source node. Whether the source node is operational and if a connection path between the first node and the source node is operational is determined based on the received first control packets. The method further includes sending a second control packet to a downstream node if the source node is non-operational, or the connection is non-operational. The second control packet includes at least one value indicating the source node is unreliable.

Method And Apparatus For Rapid Switchover From Primary To Standby Multicast Trees
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US Patent:

20120026866, Feb 2, 2012
Filed:

Jul 30, 2010
Appl. No.:

12/847250
Inventors:

Srikrishnan Venkataraman - Santa Clara CA, US
Sivaramakrishna Kuditipudi - Milpitas CA, US
Prashanth Ishwar - Santa Clara CA, US
Pradeep G. Jain - Sunnyvale CA, US
Jeremy Fine - Mountain View CA, US
Will Lockhart - Cambridge, GB
International Classification:

G06F 11/00
US Classification:

370225
Abstract:

A capability is provided for switching between primary and standby multicast trees on a network egress node of a multicast network. The network egress node includes a first MPLS LABEL Record including a first tree identifier of the first multicast tree, a second MPLS LABEL Record including a second tree identifier of the second multicast tree, and a MULTICAST Record including a plurality of primary tree identifiers and a plurality of standby tree identifiers. The MPLS LABEL Records include parameters, respectively, where the values of the parameters are indicative of respective packet processing rules to be applied for determining whether to accept or discard packets. When the parameter of an MPLS LABEL Record is set to a first value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record only to primary tree identifiers of the MULTICAST Record. When the parameter of an MPLS LABEL Record is set to a second value, a determination as to whether to accept or discard a packet received via the associated multicast tree is performed by comparing the tree identifier of the MPLS LABEL Record to primary tree identifiers of the MULTICAST Record or standby tree identifiers of the MULTICAST Record.

Method And Apparatus For Performing Multicast Traces In Mpls Networks
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US Patent:

20120033667, Feb 9, 2012
Filed:

Aug 5, 2010
Appl. No.:

12/850788
Inventors:

Srikrishnan Venkataraman - Santa Clara CA, US
Kanwar Singh - Mountain View CA, US
Pradeep G. Jain - Sunnyvale CA, US
International Classification:

H04L 12/56
US Classification:

370390
Abstract:

A multicast path trace capability is provided for tracing a multicast path from a root node to a leaf node where the trace originates at the leaf node. The leaf node sends a multicast trace request to the root node. The root node receives the multicast trace request and initiates a path trace request for collecting path information associated with the multicast path. The root node receives at least one path trace response, in response to the path trace request, which includes path information associated with the multicast path. The root node sends a multicast trace response, including the collected path information, to the leaf node. The leaf node receives the multicast trace response including the path information. The leaf node derives end-to-end path information for the multicast path using the path information received in the multicast trace response. The multicast path trace capability may be used for tracing an MPLS multicast path (e.g., a P2MP LSP) from a root node to a leaf node of the MPLS multicast tree. The multicast path trace capability may be used for tracing multicast paths in other types of multicast networks.

System And Method For Inter-Domain Rsvp-Te Lsp Load Balancing
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US Patent:

20130322253, Dec 5, 2013
Filed:

Mar 15, 2013
Appl. No.:

13/837531
Inventors:

PRADEEP G JAIN - MOUNTAIN VIEW CA, US
KANWAR D SINGH - MOUNTAIN VIEW CA, US
JAISHAL SHAH - MOUNTAIN VIEW CA, US
SRIKRISHNAN VENKATARAMAN - MOUNTAIN VIEW CA, US
International Classification:

H04L 12/56
US Classification:

370236
Abstract:

A system, method and apparatus for causing network routers such as Area Border Routers (ABRs) to use a preferred tie-breaking mechanism to select one path in the event of an ERO expansion operation resulting in multiple equal cost paths.

System And Method For Managing Mpls-Te Overload
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US Patent:

20130322254, Dec 5, 2013
Filed:

Mar 15, 2013
Appl. No.:

13/838673
Inventors:

PRADEEP G. JAIN - MOUNTAIN VIEW CA, US
KANWAR D. SINGH - MOUNTAIN VIEW CA, US
JAISHAL SHAH - MOUNTAIN VIEW CA, US
SRIKRISHNAN VENKATARAMAN - MOUNTAIN VIEW CA, US
International Classification:

H04L 12/56
US Classification:

370236
Abstract:

A system, method and apparatus for detecting MPLS-TE overload conditions and informing a IGP routing protocol, wherein the IGP routing protocol communicates the overload condition to the nodes in the MPLS TE routing domain by inserting new flag or bit value in an OSPF Router Information Capability TLV or an IS-IS Router Capability TLV.

System And Method For Efficient Mvpn Source Redundancy With S-Pmsi
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US Patent:

20130322291, Dec 5, 2013
Filed:

Sep 20, 2012
Appl. No.:

13/623172
Inventors:

SRIKRISHNAN VENKATARAMAN - SUNNYVALE CA, US
PRADEEP G. JAIN - SUNNYVALE CA, US
KANWAR D. SINGH - MOUNTAIN VIEW CA, US
JAISHAL SHAH - MOUNTAIN VIEW CA, US
International Classification:

H04L 12/56
US Classification:

370254
Abstract:

A system, method and apparatus for source redundant MVPN in which a number of Interface Indices is reduced by leaf node Incoming Label Maps (ILM) including one or more Interface Indices common to multiple tunnels.

System, Method And Apparatus For Signaling And Responding To Ero Expansion Failure In Inter-Domain Te Lsp
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US Patent:

20140029414, Jan 30, 2014
Filed:

Dec 20, 2012
Appl. No.:

13/722642
Inventors:

PRADEEP G. JAIN - SUNNYVALE CA, US
KANWAR D. SINGH - MOUNTAIN VIEW CA, US
NISHA DESAI - MOUNTAIN VIEW CA, US
SRIKRISHNAN VENKATARAMAN - MOUNTAIN VIEW CA, US
International Classification:

H04L 12/24
US Classification:

370221
Abstract:

A system, method and apparatus for performing a constraint base shortest path computation (CSPF) in a manner excluding those nodes indicated as having failed an ERO expansion, the indication being provided via an error code within an RSVP path message associated with setup of an alternate LSP.

System And Method Of Signaling Protection Path Bindings
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US Patent:

20160315854, Oct 27, 2016
Filed:

Apr 27, 2015
Appl. No.:

14/697033
Inventors:

- Murray Hill NJ, US
Srikrishnan Venkataraman - Santa Clara CA, US
Assignee:

ALCATEL-LUCENT USA INC. - Murray Hill NJ
International Classification:

H04L 12/723
H04L 12/703
H04L 12/913
Abstract:

A system, method and apparatus for signaling path binding information between end nodes of a Generalized Label Switched Path working path to provide controlled and rapid switching by both end nodes from a failed or failing working path to a protected path.