Question

A storage engineer is troubleshooting FCoE connectivity on a Nexus switch acting as an FCF. During FIP fabric login, an ENode successfully completes FLOGI. The engineer inspects the source MAC address used by the ENode for subsequent FCoE data frames and notices it is different from the CNA's burned-in MAC address. What determines the MAC address the ENode now uses for FCoE traffic?

Accepted Answer

The FCF assigns a Fabric-Provided MAC Address (FPMA) built from the FC-MAP prefix and the FCID assigned during FLOGI

Answer

The ENode retains its Server-Provided MAC Address (SPMA) and the FCF simply learns it via FIP discovery

Answer

The FCF assigns a MAC address derived from the CNA's WWPN concatenated with the VSAN ID

Answer

The ENode uses a randomly generated locally administered MAC address advertised in the FIP discovery advertisement