In the example LAG configuration, which LACP mode is used on the LAG interface?

In the example LAG configuration, which LACP mode is used on the LAG interface?

• A. Active
• B. Passive
• C. On
• D. Disabled

Answer: (A)

LACP modes control how a port participates in link aggregation negotiation. On the LAG interface, using Active means that the port actively sends LACP control packets and initiates negotiation with the peer. This ensures the LAG forms dynamically as soon as it sees a compatible partner. If the peer is configured as Passive, it will respond to the LACP packets it receives, and the LAG still forms because one side is actively initiating. If both sides were Passive, no negotiation would start and the LAG wouldn’t form. Using On would make the link static, bypassing LACP negotiation altogether, which isn’t what’s shown in a typical example that relies on dynamic negotiation. Disabled turns off LACP entirely. So, Active is the best match for an example that demonstrates dynamic LACP negotiation on the LAG interface.

LACP modes control how a port participates in link aggregation negotiation. On the LAG interface, using Active means that the port actively sends LACP control packets and initiates negotiation with the peer. This ensures the LAG forms dynamically as soon as it sees a compatible partner.

If the peer is configured as Passive, it will respond to the LACP packets it receives, and the LAG still forms because one side is actively initiating. If both sides were Passive, no negotiation would start and the LAG wouldn’t form. Using On would make the link static, bypassing LACP negotiation altogether, which isn’t what’s shown in a typical example that relies on dynamic negotiation. Disabled turns off LACP entirely.

So, Active is the best match for an example that demonstrates dynamic LACP negotiation on the LAG interface.