| 摘要 |
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.
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