ADVERTISING TRAFFIC ENGINEERING INFORMATION WITH THE BORDER GATEWAY PROTOCOL
Granted: September 6, 2012
Application Number:
20120224506
In general, techniques are described for distributing traffic engineering (TE) link information across network routing protocol domain boundaries using a routing protocol. In one example, a network device logically located within a first routing protocol domain includes a routing protocol module executing on a control unit to execute an exterior gateway routing protocol. The routing protocol module of the network device receives an exterior gateway routing protocol advertisement from a…
HEADER CONVERSION TECHNIQUE
Granted: September 6, 2012
Application Number:
20120224473
A header conversion device allowing reduced amount of hardware and memory and high-speed line switching is disclosed. In an ATM switching device having redundant incoming line systems, a header conversion table stores a set of header conversion information for one of the redundant incoming line systems. A header converter converts the header of an ATM cell received from each of the redundant incoming line systems by referring the same set of header conversion information.
DETECTION OF ACTIVE NODES, SAFE NODE REMOVAL CONDITIONS, AND CROSS-CABLING CONDITIONS FOR MAINTENANCE OPERATIONS WITHIN A MULTI-CHASSIS ROUTING MATRIX
Granted: August 30, 2012
Application Number:
20120218996
A system includes a first device connected to a second device The first device includes a second node connected to a first node and the second device via a link, and includes a backup second node connected to the first node and the second device via another link. The first node is configured to receive, via the link or the other link, a group of packets (i.e., “packets”), from the second device; display a first notification that the second node can be removed when the packets are…
SEPARATION OF DATA AND CONTROL IN A SWITCHING DEVICE
Granted: August 30, 2012
Application Number:
20120219001
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…
PIPELINE SCHEDULER WITH FAIRNESS AND MINIMUM BANDWIDTH GUARANTEE
Granted: August 23, 2012
Application Number:
20120213230
A pipeline scheduler provides a minimum bandwidth guarantee by transporting cells from an input port to an output port in a two-phased approach. Cells that conform to a minimum cell rate (MCR) are selected from queues at the input port and arranged into supercells for transport to the output port, followed by nonconforming cells, to guarantee fairness by using scheduling modules to build the supercells first for conforming cells, and then for nonconforming cells. Reservation vectors are…
SECURE DELIVERY OF FLASH CONTENT OVER NETWORKS
Granted: August 23, 2012
Application Number:
20120215887
A method for securing delivery of flash content over a network includes rewriting flash content action code capable of making a network request for flash content to redirect network communication associated with the flash content to a network device.
ROUTING VOIP CALLS THROUGH MULTIPLE SECURITY ZONES
Granted: August 23, 2012
Application Number:
20120216272
Call setup signaling is performed across at least a first security zone, a second security zone, and a third security zone to set up a call. At least one gate is then established between the first security zone and the third security zone to enable traffic flow for the call between the first security zone and the third security zone.
LOAD BALANCING NETWORK TRAFFIC ON A LABEL SWITCHED PATH USING RESOURCE RESERVATION PROTOCOL WITH TRAFFIC ENGINEERING
Granted: August 16, 2012
Application Number:
20120207012
Techniques are describe for establishing an overall label switched path (LSP) for load balancing network traffic being sent across a network using the a resource reservation protocol such as Resource Reservation Protocol with Traffic Engineering (RSVP-TE). The techniques include extensions to the RSVP-TE protocol that enable a router to send Path messages for establishing a tunnel that includes a plurality of sub-paths for the overall LSP. The tunnel may comprise a single RSVP-TE Label…
METHODS AND APPARATUS FOR FLOW CONTROL ASSOCIATED WITH MULTI-STAGED QUEUES
Granted: August 2, 2012
Application Number:
20120195203
In one embodiment, a method, comprising receiving at a receive side of a physical link a request to suspend transmission of data from a queue within a transmit side of a first stage of queues and to suspend transmission via a path including the physical link, a portion of the first stage of queues, and a portion of a second stage of queues. The method includes sending, in response to the request, a flow control signal to a flow control module configured to schedule transmission of the…
AUTO MED ID ASSIGNMENT WITHIN CFM MAINTENANCE ASSOCIATION
Granted: July 26, 2012
Application Number:
20120189020
A device may include a maintenance association endpoint configured to select a maintenance association endpoint identifier, transmit the maintenance association endpoint identifier to one or more other maintenance association endpoints, and automatically assign the maintenance association endpoint identifier to the maintenance association endpoint if it is determined that the maintenance association endpoint identifier is available based on a conflict message received from one of the one…
DYNAMIC DISK THROTTLING IN A WIDE AREA NETWORK OPTIMIZATION DEVICE
Granted: July 26, 2012
Application Number:
20120191909
A network device may operate to increase application performance over a wide area network. In one particular implementation, the network device may monitor accesses to a disk drive from entities and determine whether an entity is accessing the disk drive in a manner that causes a disproportionate amount of performance degradation. If so, the network device may throttle access to the disk drive for the entity.
METHODS AND APPARATUS RELATED TO ROUTE SELECTION WITHIN A NETWORK
Granted: July 26, 2012
Application Number:
20120189009
In some embodiments, an apparatus includes a first network device configured to receive, from a second network device, a first forwarding-state packet associated with a peripheral processing device and having a first generation identifier. The first network device is configured to receive, from a third network device, a second forwarding-state packet associated with the peripheral processing device and having a second generation identifier. The first network device is configured to…
PARTIAL FAILURE MESSAGING
Granted: July 5, 2012
Application Number:
20120170522
A system is configured to: receive a message from a gateway device; identify one or more sessions corresponding to an identifier included in the message; and clear the one or more corresponding sessions. The identifier may correspond to a part of the gateway device where a session is stored or maintained for a mobile device to connect to a server device.
METHODS AND APPARATUS FOR VALIDATION OF EQUAL COST MULTI PATH (ECMP) PATHS IN A SWITCH FABRIC SYSTEM
Granted: July 5, 2012
Application Number:
20120170575
An apparatus includes a replication engine of a switch module of a multi-stage switch. The replication engine is configured to receive a first validation packet from an input port of the switch module. The replication engine is configured to determine multiple output ports of the switch module to which a data packet can be sent to reach a destination device associated with the first validation packet. The replication engine is configured to define multiple second validation packets based…
METHODS AND APPARATUS FOR STANDARD PROTOCOL VALIDATION MECHANISMS DEPLOYED OVER A SWITCH FABRIC SYSTEM
Granted: July 5, 2012
Application Number:
20120170585
An apparatus includes a destination edge device configured to receive a first validation packet according to a switch fabric validation protocol. The destination edge device is configured to validate multiple data paths through a distributed switch fabric from a source edge device to the destination edge device based on the first validation packet. The destination edge device is configured to send, in response to receiving the first validation packet, a second validation packet to a…
METHODS AND APPARATUS FOR PROVIDING UNIQUE MAC ADDRESS TO INDIVIDUAL NODE FOR FIBRE CHANNEL OVER ETHERNET (FCOE) TRAFFIC
Granted: June 28, 2012
Application Number:
20120163374
In one embodiment, an apparatus can include a filter module operatively coupled to a switching module. The filter module can be configured to define a filter to be applied to a Fibre Channel over Ethernet (FCoE) frame received from any port from multiple ports instantiated at a network device. The filter can be defined based at least in part on a first logical address associated with a first port from the multiple ports. The first logical address can be based at least in part on (1) a…
SWITCHING DEVICE
Granted: June 28, 2012
Application Number:
20120163375
A switching device in a network system for transferring data includes one or more source line cards, one or more destination line cards and a switching fabric coupled to the source line cards and the destination line cards to enable data communication between any source line card and destination line card. Each source line card includes a request generator to generate a request signal to be transmitted in order to obtain an authorization to transmit data. Each destination line card…
METHODS AND APPARATUS TO ROUTE FIBRE CHANNEL FRAMES USING REDUCED FORWARDING STATE ON AN FCOE-TO-FC GATEWAY
Granted: June 28, 2012
Application Number:
20120163376
In one embodiment, an apparatus includes a switching policy module configured to define a switching policy associating a Fibre Channel port with a destination Media Access Control (MAC) address. The switching module can be configured to receive a Fibre Channel over Ethernet (FCoE) frame from a network device and send a Fibre Channel frame encapsulated in the FCoE frame to the Fibre Channel port based at least in part on the switching policy and a destination MAC address of the FCoE…
METHODS AND APPARATUS FOR REDUNDANCY ASSOCIATED WITH A FIBRE CHANNEL OVER ETHERNET NETWORK
Granted: June 28, 2012
Application Number:
20120163391
In some embodiments, an apparatus includes a gateway device configured to be operatively coupled to a Fibre Channel switch by a first data port and a second data port. The gateway device is configured to designate the first data port as a primary data port and the second data port as a secondary data port. The gateway device is configured to associate a set of virtual ports with the first data port and not the second data port when in the first configuration. The gateway device is…
APPARATUS AND METHODS TO AGGREGATE FCOE (FIBRE CHANNEL OVER ETHERNET) FILTER RULES OF A SINGLE INTERFACE IN A SINGLE OR FEW RULES ON A FIRST-HOP FCOE NETWORKING ELEMENT
Granted: June 28, 2012
Application Number:
20120163395
In one embodiment, an apparatus can include a filter module configured to receive multiple Media Access Control (MAC) addresses associated with multiple virtual ports instantiated at a first network device. Each virtual port from the multiple virtual ports can be associated with a MAC address from the multiple MAC addresses. The filter module can be configured to define a filter to be applied to a data frame sent between the first network device and a network switch, the filter being…
