Patent application number | Description | Published |
20080205265 | TRAFFIC ROUTING - A method may include forming a primary label switching path (LSP) from a first node to a second node, where the primary LSP has a path metric that is less than a predetermined value. The method may also include detecting a failure in the primary LSP and identifying a second path from the first node to the second node that has a path metric that is less than the predetermined value. The method may further include routing data via the second path in response to the failure in the primary LSP. | 08-28-2008 |
20080281980 | PSEUDOWIRE CIRCUIT EMULATION - A method includes establishing a first pseudowire between a first switching device and a second switching device. The method also includes receiving customer traffic that includes time division multiplexed data and formatting the time division multiplexed data as packets. The method further includes identifying a destination for the customer traffic, identifying the first pseudowire for forwarding the customer traffic and forwarding the customer traffic via the first pseudowire to the second switching device. | 11-13-2008 |
20090086643 | PATH TESTING AND SWITCHING - A method may include forming a first path from a first node to a second node and transmitting data via the first path. The method also includes measuring a performance parameter associated with transmitting data via the first path and determining whether the measured performance parameter meet a required performance parameter. The method also includes sending a notification to a customer associated with the first path when the measured performance parameter does not meet the required performance parameter, where the notification indicates that the first path is unavailable. | 04-02-2009 |
20110090802 | PATH TESTING AND SWITCHING - A method may include forming a first path from a first node to a second node and transmitting data via the first path. The method also includes measuring a performance parameter associated with transmitting data via the first path and determining whether the measured performance parameter meet a required performance parameter. The method also includes sending a notification to a customer associated with the first path when the measured performance parameter does not meet the required performance parameter, where the notification indicates that the first path is unavailable. | 04-21-2011 |
20140328163 | MIDSPAN RE-OPTIMIZATION OF TRAFFIC ENGINEERED LABEL SWITCHED PATHS - A technique for mid-span re-optimization of traffic engineered label switched paths within a network that uses a label switching protocol (e.g., MPLS) enables a network operator to move traffic to quickly prepare for link or nodal maintenance. The technique establishes, at an intermediate router, a first label switch path (LSP) along a path between an ingress router and an egress router. The intermediate router forwards traffic via the first LSP and establishes a bypass tunnel to protect against link failure between the intermediate router and a next intermediate router on the first LSP. The intermediate router continues forwarding traffic on the first LSP, instead of the bypass tunnel, based on the receipt of a link failure simulation instruction at the intermediate router from a network administration node. The intermediate router discontinues forwarding the traffic via the first LSP based on the receipt of second signaling. | 11-06-2014 |