Balaji Rajagopalan, 461420 W Pelican Ct, Chandler, AZ 85286

7693046, Apr 6, 2010

Jun 5, 2006

11/447693

Balaji Rajagopalan - Sunnyvale CA, US
Man-Tung T. Hsiao - Cupertino CA, US
Vivek Venkatraman - Santa Clara CA, US
Ravindra Sunkad - Pleasanton CA, US
Ramkumar Krishnamoorthy - Cupertino CA, US

Tellabs San Jose, Inc. - Naperville IL

H04L 12/26
H04L 12/28

370216, 370241, 370401

A method or corresponding apparatus in an exemplary embodiment of the present invention monitors an operational status of network links and retrieves or receives the operational status. The operational status is stored (e. g. , within 50 msec) on an ongoing basis. The operational status corresponds to an operational LSP from among a primary LSP and secondary LSP(s) used to service traffic via the network links to maintain network connectivity via the LSPs. The secondary LSP(s) may be either a bypass LSP or a backup LSP, where each LSP is Fast Re-route (FRR) enabled. Further, correspondence between the primary LSP, secondary LSP(s), and the network links may be tracked. In order to deliver network traffic via the operational LSP known to service traffic between the source and destination, a link identifier may be used. The link identifier is determined from the source and destination information within the network traffic.

7856024, Dec 21, 2010

Dec 12, 2008

12/333609

Anuradha Karuppiah - San Jose CA, US
Samer Isam Nubani - Santa Clara CA, US
Balaji Rajagopalan - Sunnyvale CA, US

Tellabs San Jose, Inc. - Naperville IL

H04L 12/28

370401, 709224

An apparatus and method for routing data packets between a routed network and a local bridged network using integrated routing and bridging (“IRB”) functions are disclosed. In one embodiment a bridge interface between a host in the local bridge network and a bridging engine is IRB enabled. An unnumbered Internet Protocol (“IP”) interface is then added between the host and a routing engine in accordance with the IRB enabled bridge interface. Subsequently packets received from the routed network are forwarded directly by the routing engine to the host in the local bridge network via the unnumbered IP interface, thereby bypassing the bridging engine. Through use of an embodiment of the present invention, packet processing delay in each network device is reduced (because of bypassing the bridging engine), thereby decreasing packet latency in an ever growing network.

7990852, Aug 2, 2011

Apr 10, 2009

12/421847

Sasha Cirkovic - Mountain View CA, US
Chirayu A. Shah - Fremont CA, US
Balaji Rajagopalan - Sunnyvale CA, US
Anuradha Karuppiah - San Jose CA, US

Tellabs San Jose, Inc. - Naperville IL

G01R 31/08
G06F 11/00

370228, 370242, 714 2, 714 25, 714 47

An apparatus and method of a network system between a host and a group of routers using virtual router redundancy protocol (“VRRP”) messages and bidirectional forwarding detection (“BFD”) sessions are disclosed. The network system is capable of facilitating a first communication between a host and a master router of multiple VRRP routers and establishing a BFD session between the host and the master router. When the BFD session fails, the priority of the master router is subsequently lowered and a backup router is activated. In one embodiment, the backup router capable of performing functions of the master router becomes a new master until the BFD session resumes.

2007013, Jun 14, 2007

Nov 22, 2006

11/603932

Vivek Venkatraman - Santa Clara CA, US
Ajay Virginkar - Fremont CA, US
Sanjay Khanna - Fremont CA, US
Balaji Rajagopalan - Sunnyvale CA, US
David Curry - San Jose CA, US

H04L 12/56
H04L 12/28

370390000, 370432000

A method or corresponding apparatus in an exemplary embodiment of the present invention determines how many copies of a multicast packet are to be sent, as copies, to multiple destinations based on information in the multicast packet and a group (e.g., bridge node) with which the packet is associated. The copies of the multicast packets are then generated. After generating the copies, an action to take for each copy is determined. This determination is made using the information in the multicast packet and based on the group with which the packet is associated. After the action is determined for each copy, the action is performed on each copy. Through use of an embodiment of the present invention, memory space is conserved, allowing for continued use of a device in a multicast environment of an ever growing network, such as the Internet.

2007028, Dec 6, 2007

Nov 29, 2006

11/605829

Balaji Rajagopalan - Sunnyvale CA, US
Samer I. Nubani - Santa Clara CA, US
Charles C. Park - Santa Clara CA, US
Sirisha Paturi - Sunnyvale CA, US

H04L 12/56

3703953

A network node or corresponding method of performing link aggregation reduces a number of Content Addressable Memory (CAM) entries required to make a forwarding decision for a given ingress flow, reducing cost, size, and power consumption of the CAM and accompanying static RAM. In one embodiment, an ingress flow is mapped to an egress flow identifier. Subsequently, the egress flow identifier is mapped to a member of an aggregated group associated with an egress interface based on information available in a given ingress flow. Finally, the given ingress flow is forwarded to the member of the aggregated group associated with the egress interface. A hashing technique or two lookups may be used alone or in combination in mapping the ingress flow to the egress flow identifier to reduce CAM memory usage.

2011024, Oct 6, 2011

Jun 13, 2011

13/159286

Sasha Cirkovic - Mountain View CA, US
Chirayu A. Shah - Fremont CA, US
Balaji Rajagopalan - Sunnyvale CA, US
Anuradha Karuppiah - San Jose CA, US

Tellabs San Jose, Inc - Naperville IL

G06F 11/00

370221, 370225

An apparatus and method of a network system between a host and a group of routers using virtual router redundancy protocol (“VRRP”) messages and bidirectional forwarding detection (“BFD”) sessions are disclosed. The network system is capable of facilitating a first communication between a host and a master router of multiple VRRP routers and establishing a BFD session between the host and the master router. When the BFD session fails, the priority of the master router is subsequently lowered and a backup router is activated. In one embodiment, the backup router capable of performing functions of the master router becomes a new master until the BFD session resumes.

2022034, Oct 27, 2022

Jul 8, 2022

17/860270

- Round Rock TX, US
Pawan Kumar Singal - Milpitas CA, US
Balaji Rajagopalan - Sunnyvale CA, US
Ning Zhuang - San Jose CA, US
Joseph LaSalle White - San Jose CA, US
Sudhir Vittal Shetty - Cedar Park TX, US
Babu Krishna Chandrasekhar - Round Rock TX, US
Zoheb Khan - Austin TX, US

G06F 13/10
G06F 13/12

An expander I/O module discovery/management system includes a secondary system chassis housing an expander I/O module coupled to a server device. The server device identifies the secondary system chassis and an expander I/O module port utilized by that server device, and then generates and transmits an expander I/O module reporting communication identifying the secondary system chassis and the expander I/O module port. A primary system chassis houses a switching I/O module coupled to the expander I/O module. The switching I/O module receives the expander I/O module reporting communication and determines that the secondary system chassis identified in the expander I/O module reporting communication is different than the primary system chassis. In response, the switching I/O module assigns a virtual slot to the expander I/O module, and assigns a virtual port associated with the virtual slot to the expander I/O module port identified in the expander I/O module reporting communication.

2022020, Jun 23, 2022

Dec 18, 2020

17/126325

- Round Rock TX, US
Balaji Rajagopalan - Sunnyvale CA, US
Sudhir Vittal Shetty - Cedar Park TX, US
Zoheb Khan - Austin TX, US

H04L 12/24

An automated networking device replacement system includes a chassis housing in which management module and a fabric services subsystem are provided. The fabric services subsystem identifies that a first networking device has been provided in the chassis, and determines that the first networking device is a replacement for a second networking device. In response, the fabric services subsystem automatically identifies at least one fabric-services-based configuration that was performed on the second networking device, and automatically performs the at least one fabric-services-based configuration on the first networking device. The fabric services subsystem then transmits a management-module-based configuration instruction to the management module that causes the management module to automatically perform at least one management-module-based configuration on the first networking device that was performed on the second networking device.