Kompella, CA
Kireeti Kompella Kompella, Los Altos, CA US
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20140160981 | TRANSPORT NETWORKS SUPPORTING VIRTUAL PRIVATE NETWORKS, AND CONFIGURING SUCH NETWORKS - A layer 2 transport network, and components thereof, supporting virtual network functionality among customer edge devices. Virtual private network configuration can be accomplished with merely local intervention by preprovisioning extra channel (or circuit) identifiers at each customer edge device and by advertising label base and range information corresponding to a list of channel (or circuit) identifiers. | 06-12-2014 |
Murthy Kompella, Costa Mesa, CA US
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20090168654 | SNOOPING IN SAS EXPANDER NETWORKS - Snooping in SAS expander networks is disclosed. Ports in a SAS expander may include snoop circuitry and a snoop tap which allows snoop data to be diverted for snooping prior to any significant transformation of the traffic by the regular port logic. Furthermore, the snoop circuitry can receive OOB signaling and convert it to K characters for transmission through the SAS network and subsequent analysis by a protocol analyzer. The ports and cascades in the expander network can be configured to create snoop paths to enable snoop data to be passed through the network to locations where a protocol analyzer can be easily attached. With SAS snoop ports, there is no disruption to the system. Because only a copy of the data is routed to the analyzer, there is no change to the original signal path and latency is identical with or without the analyzer. | 07-02-2009 |
20090282175 | System and Method for Enabling Multiple Processors to Share Multiple SAS Wide Ports - Embodiments of the present invention provide for an IOC that does not limit each CPU to a particular port. Instead, the IOC may allow each CPU to communicate with all ports. Thus, the IOC can process CPU communications to determine which port to send them to, and send them to the correct port as well as process incoming communications from the ports to determine which CPU to send them to and send these communications to the correct CPU. This may significantly increase the flexibility and efficiency of a storage network. | 11-12-2009 |
20100232049 | System and Method for Sector Remapping - Disclosed herein is an improved sector remapping method that maps logical sectors into physical sectors in storage disks such as SATA (Serial ATA) drives without reducing either storage capacity or I/O performance efficiency. Under this sector remapping method, logical sectors of data can be written into the physical sectors of a storage device through control frames having padded data or information associated with the padded data, as well as data frames having real data to be stored. With the padded data to be added to the real data, the frames provide multiple physical sectors to be transmitted into the storage device in a single write operation. The sector remapping method can be implemented in a storage bridge coupled to a storage device such as SATA drives. | 09-16-2010 |
20100235678 | System and Method for Data Protection Against Power Failure During Sector Remapping - Disclosed herein is a technique to protect sector remapped boundary data from corruption due to catastrophic errors such as loss of power in storage disks including SATA (Serial ATA) drives. Specially, one method is provided for protecting the boundary sector data from power failure through a data recovery mechanism, namely, a boundary sector table in which the boundary sectors are pre-stored in case any power failure or loss occurs during the sector remapped write operations. In connection with the boundary sector table stored in a reserved region of the storage disk, a boundary sector information index is provided in a bridge coupled to the disk, which serves as a key to identify and retrieve the needed boundary sector data from the table for corrupted data recovery. | 09-16-2010 |
20110107002 | SAS Expander-Based SAS/SATA Bridging - Described herein is an improved mechanism for bridging between SAS and SATA drives based upon existing SAS expanders in a SAS domain. In particular, a bridge capable of translating between SAS and SATA protocols is embedded in or coupled to an expander. When a SAS initiator request is received at the expander, the expander can route the request, based on a routing table, either directly to a destination SAS device or to the bridge for necessary translation before it is transmitted to a destination SATA drive. The routing table includes corresponding relationships between all SAS addresses and Phys through which those SAS and SATA devices are attached to the expander. SATA devices can be virtualized in the expander through a few assigned addresses in the routing table in a SAS discovery process. | 05-05-2011 |
Murthy Kompella, Roseville, CA US
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20100064104 | Integrated-circuit implementation of a storage-shelf router and a path controller card for combined use in high-availability mass-storage-device shelves and that support virtual disk formatting - An integrated circuit implementing a storage-shelf router used alone, or in combination with other storage-shelf routers, and in combination with path controller cards, to interconnect the disks within a storage shelf or disk array to a high-bandwidth communications medium through which data is exchanged between the individual disk drives of the storage shelf and a disk-array controller. In various embodiments, the present invention provides virtual disk formatting by a storage shelf router and the storage shelf in which the storage-shelf is included, to external computing entities, such as disk-array controllers and host computers. By providing virtual disk formatting, a storage-shelf router can provide to a disk-array controller, and other external computing entities, the disk-formatting convention expected by the disk-array controller, even though disk drives and other storage systems that do not conform to the expected formatting conventions may be included in the storage shelf and interconnected to a disk-array controller and other external processing entities via an interface provided by a storage-shelf router. Virtual disk formatting, in addition, allows a storage-shelf router to format a disk drive differently from the disk formatting expected by external computing entities, so that the storage-shelf router can transparently include additional information into disk sectors, such as additional error detection and error-correction information. | 03-11-2010 |
Ramana Kompella, Santa Clara, CA US
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20150085665 | SYSTEM AND METHOD FOR IMPROVING TCP PERFORMANCE IN VIRTUALIZED ENVIRONMENTS - Example embodiments described herein provide systems and methods for transmitting data packets between a protocol sender and a protocol receiver in a cloud environment, having either the protocol sender or the protocol receiver residing within a virtualized host. A protocol acceleration module may observe the data packets transmitted along the data path between the protocol sender and the protocol receiver using protocol stack configuration information of the protocol sender. The protocol acceleration module may override the protocol stack configuration information with policy-based protocol stack configuration information such that data packets transmitted from the protocol acceleration module to the protocol receiver use the policy-based protocol stack configuration information. For various embodiments, the protocol stack configuration information of the protocol sender is not modified. | 03-26-2015 |
20150089500 | SYSTEM AND METHOD FOR IMPROVING TCP PERFORMANCE IN VIRTUALIZED ENVIRONMENTS - A method and system of improving TCP performance by offloading TCP processing to a protocol acceleration module is provided. For example, one or more in-sequence data packets being transmitted between a protocol sender and a protocol receiver is observed, and either the protocol sender or receiver resides within a virtualized host. A determination is made whether the protocol packet buffer within the protocol acceleration module is full. In further examples, one or more in-sequence packets are processed in an accelerated mode, where the processing includes copying the in-sequence data packets into the protocol packet buffer. | 03-26-2015 |
Vach Kompella, Cupertino, CA US
Patent application number | Description | Published |
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20090116396 | OAM echo messaging to verify a service-based network distribution path - Echo messaging for operation, administration, and management of a service-based distribution path and associated services are disclosed. Service-based distribution paths or transport tunnels include services mapped or bound to a path associated with the transport tunnel. Echo messaging provides OAM capabilities to monitor the operational state of a service-based distribution path, including determining configuration, connectivity, and other characteristics of the path and associated services that transport data. OAM functions provided by echo messaging enable OAM functions despite service volume along a core network, path or set of paths. | 05-07-2009 |
20100228842 | Injecting addresses to enable OAM functions - Inserting an address used for performing such OAM functions in an efficient way that is transparent to a customer or service using the network path is disclosed. An indication is received that a source address reserved for OAM use should be inserted into a forwarding database associated with a provider network node, such as a provider edge device, that receives the indication. The address is inserted into a forwarding database as an address that is owned by the provider network node and reserved for OAM use. One or more other nodes associated with a service with which the OAM address is associated may be notified that the OAM address is associated with the provider network node that owns the OAM address. | 09-09-2010 |
Vachaspathi Peter Kompella, Cupertino, CA US
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20110320608 | METHOD AND APPARATUS FOR ALLOCATING BUNDLES OF SESSIONS IN A NETWORK ELEMENT - A session bundle allocation capability is disclosed. The session bundle allocation capability enables dynamic allocation of bundles of sessions being handled by a network element to modules of the network element (e.g., modules such as processing modules configured to perform one or more of traffic processing, traffic switching, and like functions). A bundle of sessions may be allocated by associating a plurality of sessions to form thereby a bundle of sessions, and assigning the bundle of sessions to a processing module group including one or more processing modules configured for processing traffic for the sessions of the bundle of sessions. A bundle of sessions may have a bundle identifier associated therewith, and a bundle of sessions may be migrated from a first processing module group to a second processing module group by changing a mapping of the bundle identifier from being associated with the first processing module group to being associated with the second processing module group. | 12-29-2011 |
20140071985 | METHOD AND APPARATUS FOR OPTIMIZING USAGE OF TERNARY CONTENT ADDRESSABLE MEMORY (TCAN) - Various embodiments provide a method and apparatus for processing incoming packets in an efficient manner. A service ID bitmap indicating available services associated with the user is established. The available services are grouped into service set. Common service set having common set of rules is determined. A user associated with common service set and incoming traffic is identified. The incoming traffic is processed according to the common set of rules indicated by the service ID bitmap. The efficient use of Ternary Content Addressable Memory (TCAM) results in faster search result, lower power consumption and chip footprint among others. | 03-13-2014 |
20140355536 | SYSTEM AND METHOD PROVIDING FIXED MOBILE CONVERGENCE VIA BONDED SERVICES - Method, system and apparatus for identifying and binding together in one session multiple data bearing paths through various access technologies between a Packet Gateway (PGW) and Customer Premises Equipment (CPE) to form thereby a bonded service combining wireless and wireline bearers. | 12-04-2014 |
Vachaspati P. Kompella, Cupertino, CA US
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20120236708 | SYSTEM AND METHOD FOR SESSION RESILIANCY AT GEO-REDUNDANT GATEWAYS - A method, system and apparatus for managing a backup service gateway (SGW) associated with a primary SGW, the backup SGW periodically receiving from the primary SGW at least a portion of corresponding UE session state information and in response to a failure of the primary SGW, assuming management of IP addresses and paths associated with the primary SGW, and in response to receiving control or data plane traffic associated with a UE, generating a Downlink Data Notification (DDN) message adapted to inform an MME that the UE is in a live state. | 09-20-2012 |
20120236823 | SYSTEM AND METHOD FOR FAILOVER HANDLING AT GEO-REDUNDANT GATEWAYS - A method, system and apparatus for reversion of UE sessions from a backup SGW or protect node to an operationally restored primary SGW or working node. | 09-20-2012 |
20120239966 | SYSTEM AND METHOD FOR SESSION RESTORATION AT GEO-REDUNDANT GATEWAYS - A method and system for managing a backup service gateway (SGW) associated with a primary SGW, comprising periodically receiving from the primary SGW at least a portion of corresponding UE session state information, the received portion of session state information being sufficient to enable the secondary SGW to indicate to an inquiring management entity that all user sessions associated with a group of mobile devices supported by the primary SGW are in a live state; and in response to a failure of the primary SGW, assuming management of IP addresses and paths associated with the primary SGW and causing each UE supported by the failed primary SGW to reauthorize itself to the network. | 09-20-2012 |
Vach P. Kompella, Cupertino, CA US
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20120236860 | METHOD AND APPARATUS FOR RAPID REROUTING OF LDP PACKETS - A u-turn fast rerouting capability is depicted and described herein. A packet that is intended for a destination node is propagated from a first node toward a second node. The first node propagates the packet toward the second node based on selection of a first routing path for routing the packet from the first node toward the destination node. The second node, upon receiving the packet, determines that the packet cannot be delivered to the destination node via the first routing path. The second node inserts a u-turn label into the packet and returns the packet to the first node. The u-turn label indicates to the first node that the packet is being returned to the first node by the second node due to a condition preventing propagation of the packet toward the destination node using the first routing path. The first node, upon receiving the packet including the u-turn label, then selects a second routing path for routing the packet toward the destination node and propagates the packet toward the destination node based on the second routing path. The u-turn fast rerouting capability enables fast rerouting of packets in a manner preventing dropping of packets and preventing formation of forwarding loops. | 09-20-2012 |