MULTICASTING WITHIN A DISTRIBUTED CONTROL PLANE OF A SWITCH
Granted: March 22, 2012
Application Number:
20120069842
In some embodiments, a non-transitory processor-readable medium stores code representing instructions configured to cause a processor to receive, from an access switch, a first signal including forwarding state information associated with a first peripheral processing device from a set of peripheral processing devices. The code can further represent instructions configured to cause the processor to receive, from the first peripheral processing device, a second signal including a data…
HYBRID WEIGHTED ROUND ROBIN (WRR) TRAFFIC SCHEDULING
Granted: March 15, 2012
Application Number:
20120063313
A network device receives traffic associated with a network of intermediate network devices and user devices, classifies the received traffic, and allocates the classified traffic to traffic queues. The network device also schedules particular queued traffic, provided in the traffic queues and bound for particular intermediate network devices, using a hybrid weighted round robin (WRR) scheduler where the hybrid WRR scheduler schedules the particular queued traffic according to one of a…
DEQUEUING AND CONGESTION CONTROL SYSTEMS AND METHODS FOR SINGLE STREAM MULTICAST
Granted: March 15, 2012
Application Number:
20120063318
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…
HIERARCHICAL PACKET SCHEDULING
Granted: March 15, 2012
Application Number:
20120063467
A packet scheduler may include logic configured to receive packet information. The packet scheduler may include logic to receive an operating parameter associated with a downstream device that operates with cell-based traffic. The packet scheduler may include logic perform a packet to cell transformation to produce an output based on the operating parameter. The packet scheduler may include logic to use the output to compensate for the downstream device.
EARLY LOAD DETECTION SYSTEM AND METHODS FOR GGSN PROCESSOR
Granted: March 8, 2012
Application Number:
20120057458
A device may store a first and second queue of packets, calculate an average queue size based on the number of packets in the first and second queues and discard a packet when the packet is a session creation packet and the calculated average queue size is greater than a threshold value.
IN-LINE PACKET PROCESSING
Granted: March 8, 2012
Application Number:
20120057597
A method and apparatus for in-line processing a data packet while routing the packet through a router in a system transmitting data packets between a source and a destination over a network including the router. The method includes receiving the data packet and pre-processing layer header data for the data packet as the data packet is received and prior to transferring any portion of the data packet to packet memory. The data packet is thereafter stored in the packet memory. A routing…
ACCURATE MEASUREMENT OF PACKET SIZE IN CUT-THROUGH MODE
Granted: March 8, 2012
Application Number:
20120057601
A network device operating in a cut-through mode receives a current packet of an unknown length and determines if there is a known length value of a previous packet in a processing cycle associated with the current packet. When there is no known length value of the previous packet, the network device applies, to the current packet, an estimated length value for the current packet. When there is a known length value of the previous packet, the network device applies, to the current…
ATM CELL CONVERSION CIRCUIT AND ATM CELL CONVERSION METHOD
Granted: March 1, 2012
Application Number:
20120051367
Sending priority of plural stages is statically assigned according to a quality class and an output connection, and the sending priority is dynamically changed according to a state of sending request stacking every sending priority and a state of ATM cell conversion processing of a frame, and ATM cell conversion request means for issuing an ATM cell conversion request is provided every output route, and the cell conversion processing of the frame is selected and performed in the order of…
FLOODING-BASED ROUTING PROTOCOL HAVING AVERAGE-RATE AND BURST-RATE CONTROL
Granted: February 23, 2012
Application Number:
20120044940
An enhanced, flooding-based routing protocol is described that provides burst-rate and average-rate flow control. A routing device comprises a network interfaces configured to send and receive packets over a layer-two (L2) communication medium. A flooding-based link state routing protocol executes on a processor of the routing device to maintain network topology information for a network and establish an adjacency with a peer router over the layer-two (L2) communication medium. A…
FLOODING-BASED ROUTING PROTOCOL HAVING DATABASE PRUNING AND RATE-CONTROLLED STATE REFRESH
Granted: February 23, 2012
Application Number:
20120044947
An enhanced, flooding-based link state routing protocol is described that provides pruning of link state data and, when needed, rate-controlled refresh of the pruned link state data from other routers of the flooding domain. A routing device comprises a network interface to send and receive packets over a layer-two (L2) communication medium. The routing device includes a control unit coupled to the network interface, and a flooding-based link state routing protocol executing on a…
MULTI-CHASSIS ROUTER WITH MULTIPLEXED OPTICAL INTERCONNECTS
Granted: February 23, 2012
Application Number:
20120045206
A multi-chassis network device includes a plurality of nodes that operate as a single device within the network and a switch fabric that forwards data plane packets between the plurality of nodes. The switch fabric includes a set of multiplexed optical interconnects coupling the nodes. For example, a multi-chassis router includes a plurality of routing nodes that operate as a single router within a network and a switch fabric that forwards packets between the plurality of routing nodes.…
HIGH-AVAILABILITY REMOTE-AUTHENTICATION DIAL-IN USER SERVICE
Granted: February 16, 2012
Application Number:
20120042029
A method may include receiving, in a first server from a second server, a request for a service of a network by a device; sending, from the first server to the second server, a response to the request for the service to permit access to the service; and sending state information about the response to a third server for storage in a database.
VIRTUAL LOCAL AREA NETWORK (VLAN)-BASED MEMBERSHIP FOR MULTICAST VLAN REGISTRATION
Granted: February 16, 2012
Application Number:
20120039334
A network node that includes a memory to store a multicast forwarding table that contains entries that govern how multicast traffic is to be forwarded from a multicast virtual local area network (MVLAN) associated with the network node, to receiver VLANs associated with the network node, where each entry includes a multicast group, that is associated with a group of ports on the multicast VLAN via which the multicast traffic is received, and information associated with the receiver VLANs…
DISTRIBUTED IP-PBX SIGNAL PROCESSING
Granted: February 9, 2012
Application Number:
20120033661
Techniques are described by which an IP telephone system leverages the digital signal processing functions of end-user IP telephones by distributing signal processing tasks typically carried out by a centralized IP-PBX. The end-user IP telephones publicize their signal processing capabilities and availabilities to an IP-PBX, which maintains a resource capability mapping of the IP telephones. When the IP-PBX receive a bitstream for a communication session involving IP telephones and/or…
MAINTAINING PACKET ORDER USING HASH-BASED LINKED-LIST QUEUES
Granted: February 2, 2012
Application Number:
20120027019
Ordering logic ensures that data items being processed by a number of parallel processing units are unloaded from the processing units in the original per-flow order that the data items were loaded into the parallel processing units. The ordering logic includes a pointer memory, a tail vector, and a head vector. Through these three elements, the ordering logic keeps track of a number of “virtual queues” corresponding to the data flows. A round robin arbiter unloads data items from…
DOMAIN-BASED SECURITY POLICIES
Granted: January 26, 2012
Application Number:
20120023546
An example network system includes a plurality of endpoint computing resources, a business policy graph of a network that includes a set of the plurality of endpoint computing resources configured as a security domain, a set of policy enforcement points (“PEPs”) configured to enforce network policies, and a network management module (“NMM”). The NMM is configured to receive an indication of a set of network policies to apply to the security domain, automatically determine a…
SELF-SECURING POWER CORD
Granted: January 19, 2012
Application Number:
20120015541
An alternating current (AC) power cord retainer is configured to be incorporated into or connected to a power cord, instead of the electronic device to which the cord may be connected. The power cord retainer is configured to be received within and engage the same receptacle within which the plug of the power cord is received.
VPN NETWORK CLIENT FOR MOBILE DEVICE HAVING DYNAMICALLY TRANSLATED USER HOME PAGE
Granted: January 5, 2012
Application Number:
20120005745
A virtual private network (VPN) client for cellular mobile devices is described. The VPN network client processes network packets for securely tunneling the network packets between the cellular mobile device and the remote VPN security device. Upon establishing the VPN connection, the VPN network client receives a web-based home page from the secure VPN device via a secure response, dynamically parses bookmark links from the secure response and renders a bookmark window using input…
MULTI-SERVICE VPN NETWORK CLIENT FOR MOBILE DEVICE HAVING DYNAMIC FAILOVER
Granted: January 5, 2012
Application Number:
20120005477
An integrated, multi-service network client for cellular mobile devices is described. The multi-service network client can be deployed as a single software package on cellular mobile network devices to provide integrated services including secure enterprise virtual private network (VPN) connectivity, acceleration, security management including monitored and enforced endpoint compliance, and collaboration services. Once installed on the cellular mobile device, the multi-service client…
MULTI-SERVICE VPN NETWORK CLIENT FOR MOBILE DEVICE
Granted: January 5, 2012
Application Number:
20120002813
An integrated, multi-service network client for cellular mobile devices is described. The multi-service network client can be deployed as a single software package on cellular mobile network devices to provide integrated services including secure enterprise virtual private network (VPN) connectivity, acceleration, security management including monitored and enforced endpoint compliance, and collaboration services. Once installed on the cellular mobile device, the multi-service client…
