Patent application number | Description | Published |
20090083303 | NETWORK USAGE COLLECTION SYSTEM - A system includes a first database to associate a sub-interface identifier with customer information, a second database to store a history of customer usage records, and a first device. The first device may receive information from a routing device, where the information includes the sub-interface identifier for a sub-interface of the routing device and information identifying an amount of network traffic received at or transmitted from the sub-interface over a time period, use the sub-interface identifier to obtain the associated customer information from the first database, associate the customer information with the information identifying an amount of network traffic received at or transmitted from the sub-interface over a time period to create a new customer usage record, and store the new customer usage record in the second database. | 03-26-2009 |
20090086639 | TESTING DYNAMICALLY ADDRESSED NETWORK DEVICES - A method may include receiving, at a first network device, a message from a second network device. The method may include determining whether the message is a test setup message, where the test setup message includes a network address associated with the second network device. A test sequence may be initiated with the second network device based on the network address when it is determined that the message is a test setup message. | 04-02-2009 |
20100042365 | IDENTIFYING CAUSES OF SERVICE LEVEL AGREEMENT AND PERFORMANCE VIOLATIONS - A computer-implemented method may include measuring a performance of a virtual channel carrying packets through a transport network for a time period, measuring a performance of an ingress interface to the transport network carrying the virtual channel packets for the time period, and measuring a performance of an internal interface carrying the virtual channel packets internal to the transport network for the time period. The computer-implemented method may determine that the performance of the virtual channel during the time period does not meet a first performance standard, and, when the performance of the virtual channel does not meet the first performance standard, may automatically determine whether the performance of the ingress interface meets a second performance standard and whether the performance of the internal interface meets a third performance standard. | 02-18-2010 |
20100070166 | ROUTING IN MAPPING SYSTEMS - A method may include receiving a start location and an end location for determining a route, determining an areal feature for at least one of inclusion or exclusion in determining the route, determining the route based on the areal feature, and providing the determined route. | 03-18-2010 |
20100293408 | LINK AGGREGATION PROTECTION - A method includes detecting, by a first network device, a configuration problem at a second network device, where the first and second network devices are associated with a link aggregation group (LAG) coupling the first and second network devices. The method also includes de-activating, by the first network device, one or more links in the LAG in response to detecting the configuration problem. The method further comprises maintaining at least one of the links in the LAG as an active link and allowing traffic to be forwarded on the active link in the LAG. | 11-18-2010 |
20100296394 | AUTOMATIC PROTECTION SWITCHING OF VIRTUAL CONNECTIONS - A method and system provision a first virtual connection between a first device and a second device; and provision a second virtual connection between the first device and a third device. A first bridge function is configured to control switching associated with the first virtual connection. A second bridge function is configured to control switching associated with the second virtual connection. A parent bridge function is configured to control switching on the first bridge function and the second bridge function, wherein the first virtual connection comprises an active connection and the second virtual connection comprises a standby connection, and wherein the parent bridge function switches traffic to the second bridge device upon determining that the first virtual connection has failed. | 11-25-2010 |
20110066876 | TRAP-BASED CONFIGURATION AUDIT - A method includes generating a layer three trap packet that includes an indicator that indicates an audit request of a resident configuration file, transmitting the layer three trap packet to another device, receiving a reference configuration file in response to transmitting the layer three trap packet, comparing the resident configuration file with the reference configuration file, and replacing the resident configuration with the reference configuration file when a difference between the reference configuration file and the resident configuration file exists. | 03-17-2011 |
20110090909 | MULTIFUNCTIONAL CONTROL CHANNEL FOR PSEUDOWIRE EMULATION - A system advertises a multifunctional control channel (MFCC) in an interface parameter sub-type-length-value (TLV) of an advertisement label mapping message that is dispatched to a network device. The system also processes a reply label mapping message that is transmitted from the network device in response to the advertisement label mapping message and updates a label information base to establish a pseudowire and a MFCC associated with the pseudowire. | 04-21-2011 |
20110096676 | LOW LOSS LAYER TWO ETHERNET NETWORK - A method may include provisioning a first virtual connection between a first device and a second device, and provisioning a second virtual connection between the first device and the second device. A data flow is received and duplicated at the first device to generate duplicated data flows. The duplicated data flows are transmitted to the second device via the first virtual connection and the second virtual connection. The duplicated data flows are received at the second device via the first virtual connection and the second virtual connection. A performance characteristic of the data flow received via the first virtual connection is determined. The performance characteristic of the data flow received via the second virtual connection is determined. The data flow received via the first virtual connection or the data flow received via the second virtual connection is selected for forwarding based on the performance characteristics of the data flow received via the first virtual connection and the performance characteristic of the data flow received via the second virtual connection. The selected data flow is forwarded. | 04-28-2011 |
20120022986 | NETWORK USAGE COLLECTION SYSTEM - A system includes a first database to associate a sub-interface identifier with customer information, a second database to store a history of customer usage records, and a first device. The first device may receive information from a routing device, where the information includes the sub-interface identifier for a sub-interface of the routing device and information identifying an amount of network traffic received at or transmitted from the sub-interface over a time period, use the sub-interface identifier to obtain the associated customer information from the first database, associate the customer information with the information identifying an amount of network traffic received at or transmitted from the sub-interface over a time period to create a new customer usage record, and store the new customer usage record in the second database. | 01-26-2012 |
20120063345 | SYSTEMS AND METHODS FOR MEASURING NETWORK PERFORMANCE - In one of many possible embodiments, a system includes a session sender configured to define and transmit a sender test packet, and a session reflector communicatively coupled to the session sender. The session reflector is configured to receive the sender test packet from the session sender, determine whether the sender test packet is received by a predetermined time. Upon a determination that the sender test packet is received by the predetermined time, the session reflector is configured to define a response test packet and transmit the response test packet to the session sender. The response test packet is defined to include data for calculating at least one two-way performance metric. In some embodiments, the session reflector is configured to record information for calculating at least one one-way performance metric. In certain embodiments, a fetch client is configured to remotely retrieve the recorded information from the session reflector. | 03-15-2012 |
20120069744 | GENERATING AND ALLOCATING PERFORMANCE MONITORING TRAFFIC - A method includes monitoring, by a first network device, traffic from a customer device, wherein the traffic is to be forwarded via a provider's network. The method also includes identifying a traffic pattern associated with the traffic, identifying a link on which the identified traffic pattern was transmitted and generating performance monitoring traffic. The method further includes forwarding, by the first network device, the performance monitoring traffic to the provider's network via the link on which the identified traffic pattern was transmitted. | 03-22-2012 |
20120136615 | IDENTIFYING CAUSES OF SERVICE LEVEL AGREEMENT AND PERFORMANCE VIOLATIONS - A computer-implemented method may include measuring a performance of a virtual channel carrying packets through a transport network for a time period, measuring a performance of an ingress interface to the transport network carrying the virtual channel packets for the time period, and measuring a performance of an internal interface carrying the virtual channel packets internal to the transport network for the time period. The computer-implemented method may determine that the performance of the virtual channel during the time period does not meet a first performance standard, and, when the performance of the virtual channel does not meet the first performance standard, may automatically determine whether the performance of the ingress interface meets a second performance standard and whether the performance of the internal interface meets a third performance standard. | 05-31-2012 |
20120195326 | USING DYNAMIC BURST SIZE METRIC TO MARK DATA - A device may receive first data at a channel over a network, the device having an interface for the channel and other channels. In addition, the device may measure over a particular time interval, a burst size and an information arrival rate at the channel based on received data. The device may also determine whether the burst size is greater than a first burst size metric, the first burst size metric initialized to a committed burst size of the channel. When the burst size is determined to be greater than the first burst size metric, the device may set a second burst size metric to a sum of the first burst size metric and an increment value. Furthermore, the device may determine whether the burst size is greater than the second burst size metric after the second burst size metric is set to the sum of the first burst size metric and the increment value. The device may also increase a first amount, of a resource allocated to the channel of the network device, by an increment corresponding to the second burst size metric after determining that the burst size is not greater than the second burst size metric. The device may decrease a second amount, of the resource allocated to the other channels, by the increment, when the first amount of the resource is increased by the increment. | 08-02-2012 |
20120201249 | LEAKY ETHERNET TREES - A network device may receive an Ethernet frame from a first leaf user-to-network (UNI) interface in a tree. The tree includes the first leaf UNI, a second leaf UNI, and a root UNI. In addition, the network device may look up, in a table, source and destination media access control (MAC) addresses in the Ethernet frame and a field value in a virtual local area network (VLAN) tag in the Ethernet frame. The destination MAC address is associated with the second leaf UNI. In addition, the network device may identify, based on the lookup, an output port via which the Ethernet frame is to be sent from the network device. Furthermore, the network device may send, through the output port, the Ethernet frame toward the second leaf UNI in the tree via a network path that includes the first leaf UNI and the second leaf UNI. The network path does not include the root UNI of the tree. | 08-09-2012 |
20120266013 | LINK AGGREGATION PROTECTION - A method includes detecting, by a first network device, a configuration problem at a second network device, where the first and second network devices are associated with a link aggregation group (LAG) coupling the first and second network devices. The method also includes de-activating, by the first network device, one or more links in the LAG in response to detecting the configuration problem. The method further comprises maintaining at least one of the links in the LAG as an active link and allowing traffic to be forwarded on the active link in the LAG. | 10-18-2012 |
20130096826 | ROUTE SELECTION - A request is received to compute a route from a start point to an end point. The route is computed using map data that includes a plurality of map elements, and route data that includes rules associated with the map elements, each of the rules being triggered by a condition flag that specifies a condition according to which the rule should be applied. The route data is based inputs related to driver experience in a geographic area associated with the route, and the inputs are based on stored data and not real-time or near-real-time data. | 04-18-2013 |
20130128749 | SERVICE STATUS SIGNALING IN ETHERNET NETWORKS - A method may include receiving, by a first Ethernet interface, a message from a remote second Ethernet interface via an Ethernet operation, administration, or management (OAM) channel. The first Ethernet interface may determine whether the message includes a request for status information regarding an identified higher layer service. The first Ethernet interface may determine, in response to the message, a current status of the identified higher layer service. A response message may be generated to include the current status. The response message is transmitted from the first Ethernet interface to the remote second Ethernet interface via the Ethernet OAM channel. | 05-23-2013 |
20130128750 | FAULT SIGNALING FOR ETHERNET - A method may include receiving a message from a first Ethernet interface in a second Ethernet interface, wherein the message includes a first attribute indicative of an Ethernet service at the first interface according to a first operation, administration, or management (OAM) protocol. The method may further include mapping the first attribute to a second attribute, wherein the second attribute is in accordance with a second OAM protocol different than the first OAM protocol. The method may further include performing an operation at the second interface based on the second attribute. | 05-23-2013 |
20130308471 | DETECTING ERROR CONDITIONS IN STANDBY LINKS - A method includes generating, by a first network device, test traffic to be transmitted to a second network device. The first and second network devices are coupled via a number of communication links, where one of links is a backup link. The method also includes transmitting, by the first network device, the test traffic to the second network device at periodic intervals via the backup link, receiving, by the second network device, the test traffic and monitoring the received test traffic. The method further includes comparing the monitored test traffic to a threshold, determining whether the monitored test traffic meets the threshold, and generating an alarm or notification message, in response to determining that the monitored test traffic does not meet the threshold. | 11-21-2013 |
20130332574 | DISTRIBUTED CONTENT DELIVERY NETWORK ARCHITECTURE - A master video server may deliver video streams to multiple sub-master video servers pursuant to the request of each sub-master video server. Each sub-master video server, in turn, may deliver video steams to multiple slave video servers pursuant to the request of each slave video server. Each sub-master video server may also deliver video streams to one or more other sub-master video servers pursuant to the request of each of the other sub-master video servers. | 12-12-2013 |
20140303891 | ROUTE SELECTION - A request is received to compute a route from a start point to an end point. The route is computed using map data that includes a plurality of map elements, and route data that includes rules associated with the map elements, each of the rules being triggered by a condition flag that specifies a condition according to which the rule should be applied. The route data is based inputs related to driver experience in a geographic area associated with the route, and the inputs are based on stored data and not real-time or near-real-time data. | 10-09-2014 |