N+1 POWER SUPPLY SYSTEM UPGRADE USING DUAL OUTPUT POWER SUPPLIES
Granted: August 28, 2014
Application Number:
20140245035
A system may include a power module that includes a group of power supplies, particular ones of the group of power supplies being operable at a group of voltages ranging from a first voltage to a second voltage. The system may further include a controller coupled to the particular ones of the group of power supplies, the controller being to ramp up an output voltage, associated with the group of power supplies, from the first voltage to the second voltage in a group of discrete steps;…
SCALABLE SECURITY SERVICES FOR MULTICAST IN A ROUTER HAVING INTEGRATED ZONE-BASED FIREWALL
Granted: August 21, 2014
Application Number:
20140237541
A multicast-capable firewall allows firewall security policies to be applied to multicast traffic. The multicast-capable firewall may be integrated within a routing device, thus allowing a single device to provide both routing functionality, including multicast support, as well as firewall services. The routing device provides a user interface by which a user specifies one or more zones to be recognized by the integrated firewall when applying stateful firewall services to multicast…
MANAGING TCP ANYCAST REQUESTS
Granted: August 21, 2014
Application Number:
20140237031
Managing TCP anycast requests at content delivery network nodes is disclosed. In some embodiments, serving a request includes receiving a request at a node of a plurality of nodes comprising a content delivery network, wherein each of the plurality of nodes share a same anycast IP address to which the request is directed and servicing the request at the node.
DYNAMICALLY GENERATING APPLICATION-LAYER TRAFFIC OPTIMIZATION PROTOCOL MAPS
Granted: August 14, 2014
Application Number:
20140229581
In general, techniques are described for using routing information obtained by operation of network routing protocols to dynamically generate network and cost maps for an application-layer traffic optimization (ALTO) service. For example, an ALTO server of an autonomous system (AS) receives routing information from routers of the AS by listening for routing protocol updates outputted by the routers and uses the received topology information to dynamically generate a network map of PIDs…
AGGREGATION NETWORK WITH CENTRALIZED CONTROL
Granted: July 31, 2014
Application Number:
20140211615
An access network is described in which a centralized controller provides seamless end-to-end service from a core-facing edge of a service provider network through aggregation and access infrastructure out to access nodes located proximate the subscriber devices. The controller operates to provide a central configuration point for configuring aggregation nodes (AGs) of a network of the service provider so as to provide transport services to transport traffic between access nodes (AXs)…
ROUTING A PACKET BY A DEVICE
Granted: July 31, 2014
Application Number:
20140215600
Methods and apparatus for transferring packets in a packet switched communication system. A system is provided that includes an L2 device including a controller determining for each packet received whether the received packet is to be inspected, an inspection device operable to inspect and filter packets identified by the controller including using a zone specific policy and an L2 controller for transferring inspected packets in accordance with L2 header information using L2 protocols.
NETWORK SECURITY DEVICE
Granted: July 31, 2014
Application Number:
20140215598
Methods and apparatus, including computer program products, implementing and using techniques for processing a data packet. An input port receives a data packet, a switching board classifies the data packet, determines whether the data packet should be accepted, and switches the data packet to a management board if the data packet is a first data packet in a session, and to a processing board if the data packet is not a first data packet in a session. A management board receives a data…
APPLICATION-LAYER TRAFFIC OPTIMIZATION SERVICE SPANNING MULTIPLE NETWORKS
Granted: July 31, 2014
Application Number:
20140215079
Using the ALTO Service, networking applications can request through the ALTO protocol information about the underlying network topology from the ISP or Content Provider. The ALTO Service provides information such as preferences of network resources with the goal of modifying network resource consumption patterns while maintaining or improving application performance. This document describes, in one example, an ALTO server that intersects network and cost maps for a first network with…
OPTICAL ACCESS NETWORK HAVING EMITTER-FREE CUSTOMER PREMISE EQUIPMENT AND ADAPTIVE COMMUNICATION SCHEDULING
Granted: July 31, 2014
Application Number:
20140212138
An access network includes an access device having an optical interface module that outputs a plurality of pairs of optical communication signals, each of the pairs of optical communication signals comprising a modulated optical transmit signal and an unmodulated optical receive signal, each of the pairs of optical communication signals having a different wavelength. A customer premise equipment (CPE) comprises an optical interface module to receive the modulated optical transmit signal…
MANAGING MULTICAST DISTRIBUTION USING MULTICAST TREES
Granted: July 31, 2014
Application Number:
20140211797
A method includes receiving multicast traffic intended for host devices; identifying a flow associated with the multicast traffic; retrieving information associated with a group of multicast trees, where the group of multicast trees includes information associated with a group of I/O units, associated with a network node; identifying a particular tree that corresponds to the identified flow, where the particular tree includes information associated with a set of I/O units; and…
RATE CONTROLLED FIRST IN FIRST OUT (FIFO) QUEUES FOR CLOCK DOMAIN CROSSING
Granted: July 17, 2014
Application Number:
20140201398
First in, first out (FIFO) queues may be used to transfer data between a producer clock domain and a number of consumer clock domains. In one implementation, a control component for the FIFO queues may include a number of counters, corresponding to each of the consumer clock domains, each of the counters maintaining a count value relating to an amount of data read by the corresponding consumer clock domain. The control component may additionally include a credit deduction component…
DYNAMIC NETWORK DEVICE PROCESSING USING EXTERNAL COMPONENTS
Granted: July 3, 2014
Application Number:
20140189050
A network device may receive information regarding a service set identifying service to apply to a data flow received via a particular interface of the network device; receive the data flow via the particular interface; identify a service to provide to the data flow based on the information regarding the service set; identify a processing device to process the data flow; and provide the data flow to the processing device. The processing device may be different than the network device and…
AUTOMATED PARALLEL SOFTWARE CODE IMPACT ANALYSIS
Granted: June 26, 2014
Application Number:
20140181796
A server device is configured to receive a request to identify a manner in which changed code propagates within an application; generate a group of blocks that correspond to code associated with a parent function corresponding to the application and which includes the changed code; perform an intra-procedural analysis on the group of blocks to identify a block that is affected by the changed code included within an epicenter block; perform an inter-procedural analysis on functions…
INTEGRATED CIRCUIT OPTIMIZATION
Granted: June 26, 2014
Application Number:
20140181778
A device may identify signal channels for connecting circuit blocks, where each circuit block is associated with a block implementation area corresponding to a substrate. The device may assign a channel priority to each of the signal channels based on at least one channel criteria. The device may allocate a channel implementation area, corresponding to the substrate, for each of a plurality of signal channels, based on the channel priority assigned to the signal channel and based on the…
SEPARATION OF DATA AND CONTROL IN A SWITCHING DEVICE
Granted: June 26, 2014
Application Number:
20140181235
A method and apparatus for switching a data packet between a source and destination in a network. The data packet includes a header portion and a data portion. The header portion includes routing information for the data packet. The method includes defining a data path in the router comprising a path through the router along which the data portion of the data packet travels and defining a control path comprising a path through the router along which routing information from the header…
VIRTUAL NETWORK PROTOTYPING ENVIRONMENT
Granted: June 26, 2014
Application Number:
20140177471
A system includes a storage device to store information associated with virtual nodes that correspond to network nodes. The system also includes a server to install a virtual node that corresponds to one of the network nodes, based on the information associated with the virtual node, where installing the virtual node includes creating a logical interface via which traffic is to be sent to, or received from, other virtual nodes; start the virtual node to create an operating virtual node…
DEQUEUING AND CONGESTION CONTROL SYSTEMS AND METHODS FOR SINGLE STREAM MULTICAST
Granted: June 26, 2014
Application Number:
20140177440
A system that processes single stream multicast data includes multiple queues, a dequeue engine, and/or a queue control engine. The queues temporarily store data. At least one of the queues stores single stream multicast data. A multicast count is associated with the single stream multicast data and corresponds to a number of destinations to which the single stream multicast data is to be sent. The dequeue engine dequeues data from the queues. If the data corresponds to the single stream…
DECOUPLING FUNCTIONALITY RELATED TO PROVIDING A TRANSPARENT LOCAL AREA NETWORK SEGMENT SERVICE
Granted: June 19, 2014
Application Number:
20140169220
A transport LAN segment service is provided over a transport network. Responsibilities for configuring, provisioning and forwarding over a transport LAN segment are divided between layer 2 and 3 service provider edge devices, where the layer 3 edge device handles discovery and tunneling responsibilities, the layer 2 edge device handles learning and flooding responsibilities, and information can be exchanged between the layer 2 and 3 edge devices. Configuration is simplified by…
SYSTEMS AND METHODS FOR DROPPING DATA USING A DROP PROFILE
Granted: June 12, 2014
Application Number:
20140160933
A system selectively drops data from queues. The system includes a drop table that stores drop probabilities. The system selects one of the queues to examine and generates an index into the drop table to identify one of the drop probabilities for the examined queue. The system then determines whether to drop data from the examined queue based on the identified drop probability.
TRANSPORT NETWORKS SUPPORTING VIRTUAL PRIVATE NETWORKS, AND CONFIGURING SUCH NETWORKS
Granted: June 12, 2014
Application Number:
20140160981
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.
