FAST CONVERGENCE ON CHILD LINK FAILURES AND WEIGHTED LOAD BALANCING OF AGGREGATE ETHERNET/SONET BUNDLES
Granted: July 7, 2011
Application Number:
20110164872
A network device provides a selector list that includes indices of child nexthops associated with the network device, where each of the child nexthops is associated with a corresponding child link provided in an aggregated bundle of child links. The network device also receives an indication of a failure of a child link in the aggregated bundle of child links, and removes, from the selector list, an index of a child nexthop associated with the failed child link. The network device…
MEMORY ORGANIZATION IN A SWITCHING DEVICE
Granted: July 7, 2011
Application Number:
20110164618
A router for switching data packets from a source to a destination in a network in which the router includes a distributed memory. The distributed memory includes two or more memory banks. Each memory bank is used for storing uniform portions of a data packet received from a source and linking information for each data packet to allow for the extraction of the uniform portions of a data packet from distributed locations in memory in proper order after a routing determination has been…
PROVIDING DYNAMIC DATABASES FOR A TCAM
Granted: June 30, 2011
Application Number:
20110161580
A network device allocates a particular number of memory blocks in a ternary content-addressable memory (TCAM) of the network device to each database of multiple databases, and creates a list of additional memory blocks in an external TCAM of the network device. The network device also receives, by the external TCAM, a request for an additional memory block to provide one or more rules from one of the multiple databases, and allocates, by the external TCAM and to the requesting database,…
DYNAMIC TOOLBAR FOR MARKUP LANGUAGE DOCUMENT
Granted: June 30, 2011
Application Number:
20110161799
A toolbar that is provided or inserted in a markup language document so as to facilitate features or functionality provided by a server is disclosed. The toolbar is able to determine whether the toolbar should be displayed as part of the markup language page being displayed. In one embodiment the server is an intermediary server.
MODULAR DOCUMENTATION USING A PLAYLIST MODEL
Granted: June 30, 2011
Application Number:
20110161793
A server device receives modular topics, where each of the modular topics includes a machine-readable and machine-storable work product that includes information related to a single, stand-alone topic. The server device stores the modular topics in a content repository as a topic library. The server device receives selection of topics from the topic library to generate one or more customized pathway pages, where each of the customized pathway pages includes a plurality of links to ones…
LOW LATENCY SERIAL MEMORY INTERFACE
Granted: June 30, 2011
Application Number:
20110161544
A device applies synchronous clocking across a first component and a second component of the device, and designates a particular serial link, from a group of serial links, as a master serial link. The device also designates the remaining serial links as slave serial links, provides, via the master serial link, an encoded data stream, and provides, via the slave serial links, un-encoded and scrambled data streams.
AUTOMATIC AGGREGATION OF INTER-DEVICE PORTS/LINKS IN A VIRTUAL DEVICE
Granted: June 30, 2011
Application Number:
20110161489
A virtual device includes multiple devices connected to operate as a single device. A first one of the devices is configured to determine that the first device connects to a second one of the devices via a first link; identify a second link; determine that the second link connects the first device to the second device; and automatically aggregate the first link and the second link to form a link aggregation with the second device based on determining that the first device connects to the…
USING A WAVEGUIDE TO DISPLAY INFORMATION ON ELECTRONIC DEVICES
Granted: June 30, 2011
Application Number:
20110158601
An electronic device includes an instrument panel that includes a display opening, where the instrument panel is located in a first plane; a circuit board located inside the electronic device, where the circuit board includes a display device that includes a display area, and where the display area is located in a second plane that is different from the first plane; and a waveguide that couples the display area to the display opening and guides light, and/or an image displayed in the…
DYNAMIC PRIORITIZED FAIR SHARE SCHEDULING SCHEME IN OVER-SUBSCRIBED PORT SCENARIO
Granted: June 30, 2011
Application Number:
20110158248
A network device receives initial policer limits for a plurality of over-subscribing ingress ports, where the initial policer limits are based on existing bandwidth limits for an over-subscribed egress port associated with the over-subscribing ingress ports. The network device receives a high threshold watermark and a low threshold watermark for bandwidth usage of the over-subscribed egress port, and identifies a queue, associated with the over-subscribed egress port, with values outside…
METHOD OF COMMUNICATING PACKET MULTIMEDIA TO RESTRICTED ENDPOINTS
Granted: June 30, 2011
Application Number:
20110158239
A method, performed in a network element, for communicating packet multimedia data between a first endpoint and a second endpoint, the method comprising the machine-implemented steps of receiving an outbound multimedia data packet; determining if the outbound multimedia data packet originated from a first endpoint that is logically behind a security device; determining and storing information identifying a logical pinhole in the security device, wherein the logical pinhole is associated…
MAINTAINING DATA UNIT ORDER IN A NETWORK SWITCHING DEVICE
Granted: June 30, 2011
Application Number:
20110158124
Data units received by a network device may be classified into traffic flow classes in which the determined traffic flow class for a data unit may be dynamically refined as the data unit is processed by the network device. A dispatch component of the network device may receive data units associated with traffic flow classes. Parallel processing engines of the network device may receive the data units from the dispatch component and may generate, for a least one of the data units, a…
SYSTEMS AND METHODS FOR REDUCING REFLECTIONS AND FREQUENCY DEPENDENT DISPERSIONS IN REDUNDANT LINKS
Granted: June 30, 2011
Application Number:
20110158087
A network device includes a group of high speed redundant transmission lines and a switch. The switch is configured to select one of the high speed redundant transmission lines. The switch causes reflections and frequency dependent dispersions in the selected high speed redundant transmission line. The network device further includes a transmitting device that is configured to adjust signals transmitted over the selected high speed redundant transmission line so as to reduce the…
BGA FOOTPRINT PATTERN FOR INCREASING NUMBER OF ROUTING CHANNELS PER PCB LAYER
Granted: June 30, 2011
Application Number:
20110155434
A printed circuit board (PCB) includes a ball grid array (BGA). The PCB further includes a first BGA pad having a circular shape, and a first via having a circular shape, where the circular shape of the first via overlaps a portion of the circular shape of the first BGA pad and is rotated diagonally relative to a center of the first BGA pad. The PCB also includes a second BGA pad having a circular shape, and a second via having a circular shape, where the circular shape of the second via…
Network distribution prevention when virtual chassis system undergoes splits and merges
Granted: June 23, 2011
Application Number:
20110149743
A method performed by network devices that includes operating in a normal mode, where the network devices form a virtual chassis that corresponds to a single logical network device; detecting when a failure within the virtual chassis occurs; executing a splitting process to form one or more new virtual chassis in correspondence to the failure; determining whether one of the one or more new virtual chassis operates as a functioning virtual chassis based on whether at least one of a set of…
CALL ADMISSION CONTROL METHOD AND SYSTEM
Granted: June 23, 2011
Application Number:
20110149784
A call admission control technique allowing flexible and reliable call admissions at an ATM switch in the case of an ATM network including both QoS-specified and QoS-unspecified virtual connections is disclosed. In the case where a QoS (Quality of Service) specified connection request occurs, an estimated bandwidth is calculated which is to be assigned to an existing QoS-unspecified traffic on the link associated with the QoS-specified connection request. A call control processor of the…
AVOIDING UNFAIR ADVANTAGE IN WEIGHTED ROUND ROBIN (WRR) SCHEDULING
Granted: June 23, 2011
Application Number:
20110149977
A network device includes multiple queues to store packets to be scheduled, and a weighted round-robin (WRR) scheduler. The WRR scheduler performs a first WRR scheduling iteration including processing of at least one packet from a particular queue of the multiple queues, identifies the particular queue as an empty queue during the performing of the first WRR scheduling iteration, identifies the particular queue as a non-empty queue after the identifying the particular queue as the empty…
SESSION MIGRATION BETWEEN NETWORK POLICY SERVERS
Granted: June 23, 2011
Application Number:
20110153854
A policy device grants access to a client device, without authenticating the client device, when the client device provides a session identifier to the policy device that was previously granted to the client device by a second policy device upon authenticating the client device by the second policy device. In one example, a policy device includes a network interface that receives a session identifier from a client device, wherein the policy device comprises an individually administered…
DYNAMIC HOST CONFIGURATION PROTOCOL (DHCP) AUTHENTICATION USING CHALLENGE HANDSHAKE AUTHENTICATION PROTOCOL (CHAP) CHALLENGE
Granted: June 23, 2011
Application Number:
20110154440
A method performed by a Dynamic Host Configuration Protocol (DHCP) server comprising receiving a DHCP DISCOVER message from a DHCP client; generating a challenge in response to the DHCP DISCOVER message; sending the challenge to an authentication device; receiving a first challenge response from the authentication device; generating a DHCP OFFER message; sending the challenge to the DHCP client in the DHCP OFFER message; receiving a DHCP REQUEST message that includes a second challenge…
LIMITING CONTROL TRAFFIC IN A REDUNDANT GATEWAY ARCHITECTURE
Granted: June 16, 2011
Application Number:
20110141881
Control traffic in a virtual LAN (VLAN) may be reduced. In one implementation, a network device may implement one of a plurality of redundant gateway devices in a virtual router that includes one or more other network devices, where the network device and the one or more other network devices are associated with a first address that corresponds to the virtual router. The network device may filter egress traffic to drop egress traffic that includes a particular destination address and…
PROTOCOL FREE TESTING OF A FABRIC SWITCH
Granted: June 16, 2011
Application Number:
20110141917
A switch fabric for a modular router may be tested without connecting the switch fabric portion of the router to the other modular portions of the router. The switch fabric may generate test data units and insert the test data units into one or more elements of the switch fabric. The switch fabric may operate with the inserted test data units. A control component may receive data units from the switch fabric after operation of the switch fabric and analyze the received data units to…
