What characterizes UDLD Aggressive mode?

UDLD (Unidirectional Link Detection) Aggressive mode is characterized by the switch sending a rapid series of packets to detect unidirectional links more effectively than in normal mode. Specifically, in Aggressive mode, the switch sends eight packets at one-second intervals. This approach facilitates quicker detection of potential issues in the communication link, allowing for faster responses and potentially preventing network problems caused by unidirectional failure.

In this mode, the switch is more proactive in checking the status of the link. If the switch does not receive a response after sending these eight packets, it can take action based on the assumption that something is wrong, such as disabling the port. This makes it distinct from other modes where fewer packets may be sent or responsiveness may be slower.

Understanding this mechanism is crucial in network design and troubleshooting, ensuring that links operate reliably and that any issues can be quickly identified and addressed.