What to Configure on Switch Interface

A.

FCoE (Fibre Channel over Ethernet) is a technology that enables the transmission of Fibre Channel storage traffic over Ethernet networks. When FCoE negotiation fails, it means that the switch and the FCoE-enabled device are not able to agree on the FCoE parameters, such as the Fibre Channel VLAN ID or the FCoE VLAN priority.

In such a scenario, the switch can be configured to perform certain actions on the interface where the FCoE negotiation failed. Let's take a closer look at the options mentioned in the question:

A. Force-enable FCoE: This option forces the switch to enable FCoE on the interface, even if the FCoE negotiation has failed. This can result in a non-functional FCoE connection, as the FCoE parameters may not be properly negotiated between the switch and the FCoE-enabled device.

B. Passive-enable FCoE: This option allows the switch to listen for FCoE frames on the interface, but does not actively advertise FCoE capabilities. This can be useful in scenarios where the FCoE-enabled device is not able to properly negotiate FCoE parameters, but can still send FCoE frames.

C. Active-enable FCoE: This option actively advertises FCoE capabilities on the interface, even if the FCoE negotiation has failed. This can help to force the FCoE-enabled device to properly negotiate FCoE parameters.

D. Reset-enable FCoE: This option resets the FCoE interface and attempts to negotiate FCoE parameters again. This can be useful if there was a temporary issue during the FCoE negotiation process.

In summary, the best option to configure the switch to do on the interface where the FCoE negotiation has failed would depend on the specific scenario and the root cause of the failure. However, the most commonly used option is to configure the switch to reset-enable FCoE, which will attempt to negotiate FCoE parameters again.