What happens if both ends of a LACP channel are set to Passive mode?

When both ends of a LACP (Link Aggregation Control Protocol) channel are set to Passive mode, the EtherChannel will not form. In LACP, there are two operational modes: Active and Passive. Active mode initiates the negotiation process by proactively sending LACP packets to the other end, while Passive mode waits for LACP packets from the opposite end.

If both ends are set to Passive, neither end will take the initiative to send LACP packets, so there will be no exchange of information necessary for establishing the EtherChannel. As a result, since neither device is actively trying to form the channel, the EtherChannel fails to establish, leading to no aggregation of links and no established logical connection. This is why the outcome is that the EtherChannel will not be formed.