摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
Example methods, apparatus and articles of manufacture to monitor communication paths in communication systems are disclosed. An example method includes identifying links of a communication system, the links communicatively coupling routers, identifying communication paths in the communication system, each of the communication paths being routed via one or more of the links, testing the links during a first interval by testing at least a first portion of the communication paths, testing the links during the second interval by testing at least a second portion of the communication paths, changing the first portion of the communication paths to include at least one of the communication paths from the second portion of the communication paths such that testing the first portion of the communication paths and testing the second portion of the communication paths collectively test each of the links, and identifying a link failure based on the testing.
摘要:
Example methods, apparatus and articles of manufacture to monitor communication paths in communication systems are disclosed. A disclosed example method includes identifying first and second inter-network communication links of a communication system, identifying a first plurality of router pairs associated with the first inter-network communication link, identifying a second plurality of router pairs associated with the second inter-network communication link, partitioning the first plurality of router pairs into a first subset of router pairs and a second subset of router pairs, partitioning the second plurality of router pairs into a third subset of router pairs and a fourth subset of router pairs, during a first time interval, performing first reachability tests for respective ones of the first and third subsets of router pairs, and during a second time interval, performing second reachability tests for respective ones of the second and fourth subsets of router pairs.