Method and apparatus for switching length of bidirectional forwarding detection packet and storage medium

An apparatus for switching a length of a Bidirectional Forwarding Detection (BFD) packet, comprising:

• a first sending module, configured to send a pre-switching packet;
• a first receiving module, configured to receive an echo packet;
• and
• at least one processor, configured to:
• in a case where a length of a current BFD packet needs to be switched to a preset length, send the pre-switching packet independent of the current BFD packet to a second node, wherein a BFD session running in an asynchronous mode is established between a first node and the second node, and the pre-switching packet is used for notifying the second node that the length of the current BFD packet needs to be switched to the preset length;
• and
• perform an operation of switching the length of the current BFD packet in a case where the echo packet fed back by the second node in response to the pre-switching packet is received.