Sudheer D Dharanikota

US Patent:

7801123, Sep 21, 2010

Filed:

Feb 22, 2005

Appl. No.:

11/063699

Inventors:

Sudheer Dharanikota - Cary NC, US
Luc Absillis - Raleigh NC, US

Assignee:

Alcatel Lucent - Paris

International Classification:

H04L 12/28
H04L 12/56

US Classification:

370389, 370401

Abstract:

A method for configuring an access node to provide residential routing functionality comprising populating a fixed match forwarding table with host entries learned during authentication of a residential router instance or during IP address assignment for the residential router instance, associating the residential router instance exclusively with a respective virtual local area network (VLAN) identifier, forwarding upstream traffic dependent upon the respective VLAN identifier and forwarding downstream traffic dependent upon a host entry designated by the downstream traffic being determined. The host entry is accessed from within the fixed match forwarding table. At least one logical interface associated with the residential router instance is provided. The IP packet received on a VLAN corresponding to the VLAN identifier is limited to being forwarded to one of the logical interfaces. Forwarding the upstream traffic includes ignoring a designated destination IP address of an IP packet and forwarding the IP packet toward a default gateway dependent upon the host entry.

US Patent:

8069475, Nov 29, 2011

Filed:

Sep 1, 2005

Appl. No.:

11/217827

Inventors:

Sudheer Dharanikota - Cary NC, US
Luc Absillis - Raleigh NC, US
Gopal Surya - Raleigh NC, US

Assignee:

Alcatel Lucent - Paris

International Classification:

H04L 29/08

US Classification:

726 7, 398 72, 713168, 709225

Abstract:

A Passive Optical Network (PON) includes an Optical Network Terminal (ONT) and an Optical Line Terminal (OLT). The ONT is configured for providing controlled port operations of authenticator Port Access Entity (PAE) functionality and the OLT is configured for providing entity authentication operations of the authenticator PAE functionality. The controlled port operations of authenticator PAE functionality includes inhibiting transmission of non-authentication messages from the ONT, transmitting a supplicant authentication request to the OLT and enabling transmission of non-authentication messages from the ONT in response to receiving supplicant authentication confirmation. The entity authentication operations of the authenticator PAE functionality include facilitating authentication of an identity of the supplicant and facilitating transmission of supplicant authentication confirmation for reception by the ONT in response to the identity being authenticated.

US Patent:

20020107908, Aug 8, 2002

Filed:

Dec 28, 2000

Appl. No.:

09/750601

Inventors:

Sudheer Dharanikota - Pleasanton CA, US

Assignee:

ALCATEL USA SOURCING, L.P.

International Classification:

G06F015/16

US Classification:

709/203000, 709/230000

Abstract:

A QoS monitoring system and method for a DiffServ-capable network element operable in a trusted domain network such as an ISP network. The network element is organized as a plurality of terminating line cards interconnected via a switch fabric capable of supporting virtual ingress/egress pipes (VIEPs). Buffer queues on the ingress and egress sides of the network element, which are established for supporting traffic flows on individual VIEPs, are monitored for determining QoS parametric information such as throughput, loss, delay, jitter and available bandwidth. A policing structure is operably coupled with a buffer acceptance and flow control module for monitoring traffic behavior on the ingress side. Another buffer acceptance/flow control module and aggregate-level monitoring module are disposed on the egress side of the network element that cooperates with a scheduler which shapes outgoing traffic. The monitoring for the PIPE traffic reflects the conformance of the service provider to their customers, whereas the monitoring for the HOSE traffic reflects the level of over- or under-provisioning for a given COS. Feedback flow control is provided between the ingress and egress sides for throttling buffer acceptance.

US Patent:

20060062210, Mar 23, 2006

Filed:

Sep 1, 2005

Appl. No.:

11/217953

Inventors:

Sudheer Dharanikota - Cary NC, US

International Classification:

H04L 12/66

US Classification:

370356000

Abstract:

Fiber to the user (“FTTU’), fiber to the curb (“FTTC”), fiber to the node (“FTTN”), and fiber to the premise (“FTTP”) platforms (referred to herein as “FTTx”), require plain old telephony service (“POTS”) emulation using voice over IP (“VoIP”) signaling and bearer channels. Such a POTS emulation service requires emulation of existing fault isolation mechanisms in POTS and also must be extended to the topologies in the VoIP environment. The present invention is adapted to provide POTS emulation using existing fault isolation mechanisms in POTS and also provides POTS emulation for topologies in VoIP environments in the scope of FTTx.

US Patent:

20080279105, Nov 13, 2008

Filed:

May 7, 2007

Appl. No.:

11/745001

Inventors:

Luc Absillis - Raleigh NC, US
Sudheer Dharanikota - Cary NC, US
Gopal Surya - Raleigh NC, US

International Classification:

H04L 12/56

US Classification:

3702362

Abstract:

Operations, administration and management (OAM) functions in a passive optical network (PON) can be performed by providing a system of flow points (i.e., software entities), such as those along the lines of the Maintenance End Points (MEPs) and Maintenance Intermediate Points (MIPs) described in the IEEE 801.1ag specification, which communicate connectivity fault test messages with each other. The flow points can be provided in the Optical Line Terminal (OLT) and Optical Network Terminator (ONT). Alternatively or in addition, flow points can be provided in a subscriber gateway coupled to the ONT. The flow points issue test messages, to which other flow points can respond with information regarding the state of network connectivity.