Puneet Agarwal

6553005, Apr 22, 2003

Jul 26, 2000

09/625747

David Skirmont - Redwood City CA
Puneet Agarwal - San Francisco CA
Russ Tuck - San Jose CA

Pluris, Inc. - Cupertino CA

H04B 330

370285, 370389

A method for routing a packet received in a packet router is taught, the method comprising the steps of selecting a logical interface having multiple physical ports as a destination for the packet, processing any one or more addresses or labels of the packet and other packets received by a common function, producing thereby results unique to the packets in which the addresses and labels processed differ, (c) mapping the physical ports at the destination to the unique results produced by processing the addresses or labels of packets, and (d) routing the data packet according to the mapping. Weighting is applied to physical ports in the mapping, the weighting reflecting different transmission capacities of the ports. Apparatus for practicing the invention is taught as well.

6738378, May 18, 2004

Aug 22, 2001

09/935433

Puneet Agarwal - San Francisco CA

Pluris, Inc. - Cupertino CA

H04L 1228

370392, 370401, 370412, 709105

In a network node having one or more packet processors and at least one CPU required to process specific types of packets, a system for managing the specific types of packets for CPU processing has one or more packet processors enabled to sort the specific types of packets into two or more categories of different priority for processing; and a queue set for queuing the sorted packets according to priority ahead of the CPU. The system is characterized in that the CPU processes the queued packets according to priority. In a special case the queues are a part of network access controller (NAC). Also in some cases a software component is provided for configuring the hardware.

6760777, Jul 6, 2004

Sep 15, 2000

09/663868

Puneet Agarwal - San Francisco CA
Vivek Menezes - Burlingame CA
Erol Basturk - Cupertino CA

Pluris, Inc. - Cupertino CA

G06F 15173

709238, 709239, 709240, 709242, 709243

An inter-network method for distributing a path-vector routing protocol within a multi-processor router has steps of running an instance of a router-distributed Border Gateway Protocol (rdBGP) on each of a plurality of processors of the multi-processor router, establishing routing sessions between individual instances of rdBGP running on separate processors of the multi-processor router, and between individual ones of the instances of rdBGP and external protocol peers, exchanging routing information between instances of rdBGP and the external protocol peers, wherein the instances of rdBGP learn, from the external protocol peers, routes for a plurality of destinations, calculating independently, by each instance of rdBGP, a set of routes, including a best route, from each of the plurality of destinations learned from the external protocol peers, and sharing route information determined with the other instances of rdBGP running on separate processors in the multi-processor router, and updating route information according to information received from the other instances of rdBGP. Routing information is further shared with the external protocol peers, and fault tolerance is provided in some embodiments by establishing redundant communication sessions with external protocol peers.

6762999, Jul 13, 2004

Aug 14, 2002

10/219565

Bora Akyol - San Jose CA
Puneet Agarwal - San Francisco CA
Les Ginsberg - Cupertino CA

Pluris, Inc. - Cupertino CA

H04L 1226

370250, 370238, 370396, 370401, 709239, 709243

A distributed Link-State Routing Protocol (LSRP) system in a packet switch having external communication ports has a first card executing Update process of the LSRP, making database updates, a second card executing Decision process(Shortest Path First (SPF)) of the LSRP, and a communication fabric coupling the cards with each other and the external ports. The LSRP may be an ISâIS system. In some embodiments there are additional cards involved, and the distribution of Link-State functions is over a set of multiple cards. Also in some embodiments there is a Location Service (LS) controller monitoring and configuring cards in the system.

6763394, Jul 13, 2004

Aug 22, 2001

09/935444

Puneet Agarwal - San Francisco CA

Pluris, Inc. - Cupertino CA

G06F 1300

709238, 370392, 370389

In a network packet router having one or more ingress and egress ports, a method is implemented at an ingress port for egress pass/drop determination for packets, comprising the steps of (a) noting header combinations and values, and egress port destination for incoming packets; (b) comparing the header combinations and values with rule sets associated with the header combinations and values including egress port identities, and (c) returning a determination of pass or drop for the packet.

6870844, Mar 22, 2005

May 10, 2001

09/854234

Russ Tuck - San Jose CA, US
David Skirmont - Redwood City CA, US
Puneet Agarwal - San Francisco CA, US

Pluris, Inc. - Cupertino CA

H04L012/28

370390, 370392

A multicast engine is provided in plurality within a router for replicating and/or modifying packets identified as multicast packets. In preferred embodiments the engine is integrated with one or more ports of a router, particularly with one or more ports of fabric cards. In one implementation the multicast engine is associated with a table having instructions for replicating or modifying multicast packets received, and forwarding the packets accordingly.

6947963, Sep 20, 2005

Jun 28, 2000

09/606377

Puneet Agarwal - San Francisco CA, US
Bora Aydin Akyol - San Jose CA, US
Erol Basturk - Cupertino CA, US
Mike Mussoline - Sunnyvale CA, US

Pluris, Inc - Cupertino CA

G06F015/16

709201, 709239, 709240, 709242, 709243, 709248

A method of and apparatus for distributing data for a database between a plurality of processors in a distributed processor system involves running a database management system on a first plurality of processors in conjunction with a plurality of protocols that generate or amend data for the database. Data is distributed from servers to clients registered in a server-client relationship. Server-client relationships may also be registered between a second, and a third plurality of processors that do not run protocols generating or amending data for the database. Fault tolerant redundancy is provided by clients registering with two or more servers, one as a primary and another as a secondary, and activating the secondary if the primary fails. The method is particularly applicable to scalable data packet routers having a plurality of processors operating on different line and control cards.

7058009, Jun 6, 2006

Sep 15, 2000

09/663869

David Skirmont - Redwood City CA, US
Puneet Agarwal - San Francisco CA, US

Pluris, Inc. - Cupertino CA

H04L 12/26

370217, 370221, 370229, 370242

In a data packet router, a method for redirecting packets destined for a port comprises steps of monitoring port status on a continuing or periodic basis, updating a port-status table, listing port status as active or failed and an alternative destination for each port, checking the table by circuitry along a packet route for a packet en route, and sending the received packet to the predestined port if the port is listed in the table as active, and sending the received packet to the alternative destination if the port is listed in the table as failed. The method can be implemented essentially anywhere along a routing path where circuitry may support a table look-up and re-tagging packets for alternative destinations. In one embodiment the automatic protection switching is performed in a fabric card, and in another on a line card.