Abstract: A communication system comprises a mobile switching center configured to determine a first delay metric for first traffic on a first path from the mobile switching center to a first node, and determine a first delay differential based on the first delay metric and a second delay metric for second traffic on a second path from the mobile switching center to a second node. The communication system also comprises the second node having a delay buffer configured to delay the second traffic based on the first delay differential.
Abstract: A method includes receiving a communication in a protocol stack coupled to a tunneling interconnect, determining whether a communication type is subject to altered timing to accommodate a delay associated with the tunneling interconnect, adjusting a timing of at least one stack logic to accommodate the delay, and handling the communication using the adjusted timing. Other embodiments are described and claimed.
Abstract: 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 Switched Path (LSP) that is configured to load balance network traffic across different sub-paths of the RSVP-TE LSP over the network.
Abstract: A method and system are provided for monitoring network performance in order to reveal micro-behavior of network traffic. At least two distinct durations are set for monitoring link utilization. At least one link utilization threshold is set for each duration. Link utilization is monitored at a router using a counter. In addition, a number of durations is provided during which the at least one link utilization threshold has been exceeded.
Abstract: Certain exemplary embodiments provide a method comprising: in a network at a node located on a label switched path: selecting a backup path to respond to a failure; and for each link along the backup path, reserving a backup bandwidth, wherein the backup bandwidth is sufficient to reroute traffic around the failure.
Abstract: A method and system are provided for automatically rerouting logical circuit data in a data network. A failure is identified in a logical circuit in a data network. The logical circuit may include a communication path for communicating data. Once the failure in the logical circuit is determined, a logical failover circuit is then identified. The logical failover circuit includes an alternate communication path for communicating the data for the failed logical circuit. After the logical failover circuit has been identified, the data from the failed logical circuit is rerouted to the logical failover circuit without manual intervention. After the data has been rerouted the logical failover circuit, a determination is made as to whether the failure in the logical circuit has been corrected. If it is determined that the failure in the logical circuit has been corrected, then the data from the logical failover circuit is rerouted back to the logical circuit in the data network without manual intervention.
Type:
Grant
Filed:
December 23, 2003
Date of Patent:
June 12, 2012
Assignee:
AT&T Intellectual Property I, L.P.
Inventors:
William Taylor, David Massengill, John Hollingsworth