Abstract: Systems and methods provide design and testing for a control plane of a network region.

Abstract: Devices, computer-readable media and methods are disclosed for managing path utilizations for telecommunication network tunnels. For example, a processor deployed in a telecommunication network may receive a request from a router of the telecommunication network for a tunnel to a destination in the telecommunication network, send a response to the router that includes at least one path comprising the tunnel through the telecommunication network to the destination, receive a trap message from the router that includes a confirmation that the at least one path is utilized by the router, and update at least one record for the at least one path in response to the trap message, where the at least one record indicates a status of a utilization of the at least one path.

Abstract: Systems and methods provide design and testing for a control plane of a network region.

Abstract: Devices, computer-readable media and methods are disclosed for managing path utilizations for telecommunication network tunnels. For example, a processor deployed in a telecommunication network may receive a request from a router of the telecommunication network for a tunnel to a destination in the telecommunication network, send a response to the router that includes at least one path comprising the tunnel through the telecommunication network to the destination, receive a trap message from the router that includes a confirmation that the at least one path is utilized by the router, and update at least one record for the at least one path in response to the trap message, where the at least one record indicates a status of a utilization of the at least one path.

Abstract: A method and apparatus for diagnosing and isolating label-switched-path impairments in a network are disclosed. For example, the present method receives an impairment notification indicating a potential impairment for at least one label switched path between a source device and a destination device. The method then identifies all routers along each of the at least one label switched path. The method then determines automatically whether each of the routers along each of the at least one label switched path is enabled for exchanging label mapping information. Finally, the method identifies at least one of the at least one label switched path as being impaired if at least one of the routers on the switched path is deemed not enabled for exchanging label mapping information.

Abstract: The invention comprises a method and apparatus for deriving at least one router configuration of at least one datacenter edge router and at least one provider edge router to support at least one datacenter managing at least one customer virtual private network. Specifically, the method comprises assigning at least one datacenter profile to the at least one datacenter, and assigning a datacenter profile route-target to the at least one datacenter profile.

Abstract: In one embodiment, the invention comprises a method and apparatus for verifying connectivity in a network comprising a plurality of provider edge routers and a plurality of customer edge routers facilitating communication within at least one customer virtual private network. In another embodiment, the invention comprises a method for determining respective operational statuses of edge communication links between provider edge routers and customer edge routers. In another embodiment, the invention comprises a method for verifying site-to-site reachability within the context of customer virtual private networks.

Abstract: Techniques for monitoring and processing network reachability events across a service provider's network are disclosed. The techniques include monitoring provider-edge routers by identifying reachability events and partial packet loss events, and processing those events so as to reduce the number of alarms generated for investigation.

Abstract: A method and apparatus for identifying a Label Distribution Protocol (LDP) flapping event in a communication network are disclosed. For example, the method counts a total number of LDP session up events, a total number of LDP session down events, a total number of link up events, and a total number of link down events within a predetermined time interval. The method then determines an occurrence of a LDP flapping event using the plurality of total numbers.

Abstract: The invention comprises a method and apparatus for deriving at least one router configuration of at least one datacenter edge router and at least one provider edge router to support at least one datacenter managing at least one customer virtual private network. Specifically, the method comprises assigning at least one datacenter profile to the at least one datacenter, and assigning a datacenter profile route-target to the at least one datacenter profile.

Abstract: The invention comprises a method and apparatus for deriving at least one router configuration of at least one datacenter edge router and at least one provider edge router to support at least one datacenter managing at least one customer virtual private network. Specifically, the method comprises assigning at least one datacenter profile to the at least one datacenter, and assigning a datacenter profile route-target to the at least one datacenter profile.

Abstract: A technique for allocating protection-switching mechanisms operates on a per wavelength basis. This allows a designer of an optical network to select a particular protection switching mechanism for a given traffic type, which is usually specific to a particular wavelength in an optical network. For another traffic type, the designer can allocate a different protection switching mechanism, thereby providing optimal protection switching for each traffic type.

Abstract: In one embodiment, the invention comprises a method and apparatus for verifying connectivity in a network comprising a plurality of provider edge routers and a plurality of customer edge routers facilitating communication within at least one customer virtual private network. In another embodiment, the invention comprises a method for determining respective operational statuses of edge communication links between provider edge routers and customer edge routers. In another embodiment, the invention comprises a method for verifying site-to-site reachability within the context of customer virtual private networks.

Abstract: A method and apparatus for identifying a Label Distribution Protocol (LDP) flapping event in a communication network are disclosed. For example, the method counts a total number of LDP session up events, a total number of LDP session down events, a total number of link up events, and a total number of link down events within a predetermined time interval. The method then determines an occurrence of a LDP flapping event using the plurality of total numbers.

Abstract: In one embodiment, the invention comprises a method and apparatus for verifying connectivity in a network comprising a plurality of provider edge routers and a plurality of customer edge routers facilitating communication within at least one customer virtual private network. In another embodiment, the invention comprises a method for determining respective operational statuses of edge communication links between provider edge routers and customer edge routers. In another embodiment, the invention comprises a method for verifying site-to-site reachability within the context of customer virtual private networks.

Abstract: Traffic demands are routed across links of an information network so as to avoid congestion and allow for future traffic growth. Traffic demands from a source node to a destination node of the network are monitored, including bandwidths associated with each of the demands. For each demand, and for a given link of the network, that portion of the bandwidth associated with each traffic demand which is provided by the given link, is determined. A maximum value of link utilization among all links of the network is then determined, wherein link utilization is defined as the amount of bandwidth used by all traffic demands routed through a given link with respect to a total capacity of the link. Traffic demands are then routed across the links of the network in such a manner as to minimize the maximum value of link utilization.

Abstract: A method for merging protection switching messages in an optical network enables a control of the amount of message bandwidth used for sending protection switching messages. A method for performing protection switching in an optical network does so in an optimal manner by performing the protection switching actions in the various nodes of a protection path in parallel rather than in sequence. To do so, a channel failure message is transmitted from an end node A in the optical network upon detecting a failure in a link in the optical network that includes the end node A. If a failure can be detected at both end nodes, the channel failure messages are transmitted from both end nodes the moment they detect failure without any further waiting. Upon receiving the first channel failure message regardless its originating end node, switching actions in intermediate nodes are initiated.

Abstract: Route advertisement requests made by a customer are received at route provisioning center (20) to effect either advertisement of a newly provisioned route or withdrawal of an existing route. In the case of a request to advertise a newly provisioned route, the request is subjected to validation, and if unable to be validated, the request is rejected. Upon validation of a new route advertisement, or following receipt of a request to withdraw an existing route advertisement, the customer-entered request is entered into an official routing database (26) for subsequent propagation to network access providers (14, 16 and 18). Periodically, a check is made to verify that the customer-entered request remains active.

Abstract: A method for merging protection switching messages in an optical network enables a control of the amount of message bandwidth used for sending protection switching messages. A method for performing protection switching in an optical network does so in an optimal manner by performing the protection switching actions in the various nodes of a protection path in parallel rather than in sequence. To do so, a channel failure message is transmitted from an end node A in the optical network upon detecting a failure in a link in the optical network that includes the end node A. If a failure can be detected at both end nodes, the channel failure messages are transmitted from both end nodes the moment they detect failure without any further waiting. Upon receiving the first channel failure message regardless its originating end node, switching actions in intermediate nodes are initiated.

Abstract: A method for performing protection switching in an optical network does so in an optimal manner by performing the protection switching actions in the various nodes of a protection path in parallel rather than in sequence. To do so, a channel failure message is transmitted from an end node A in the optical network upon detecting a failure in a link in the optical network that includes the end node A. If a failure can be detected at both end nodes, the channel failure messages are transmitted from both end nodes the moment they detect failure without any further waiting. Upon receiving the first channel failure message regardless its originating end node, switching actions in intermediate nodes are initiated. The channel failure messages are forwarded from the intermediate nodes to their corresponding next nodes before completing switching actions in the intermediate nodes.