What is the timeout period for LACPDUs

You can configure a switch to send an LACPDU every 1 or 30 seconds. The two sending intervals are defined in IEEE 802.3ad.

You can run the lacp timeout { fast | slow } command to set the timeout period for receiving LACPDUs on an interface.

After this command is used, the local end informs the peer end of the timeout period through LACPDUs. If fast is configured, the peer end sends LACPDUs every one second. If slow is configured, the peer end sends LACPDUs every 30 seconds.

The timeout period of LACPDUs is three times the interval for sending LACPDUs. That is, if fast is configured, the timeout period for receiving LACPDUs is 3 seconds. If slow is configured, the timeout period for receiving LACPDUs is 90 seconds.

You can configure different timeout periods on the two ends. To facilitate maintenance, however, you are advised to configure the same timeout period on both ends.

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