Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

On an Aggregator, FIP snooping requires the following conditions:

• A FIP snooping bridge requires DCBX and PFC to be enabled on the switch for lossless Ethernet connections (refer to Data Center Bridging (DCB) ). Dell recommends that you also enable ETS; ETS is recommended but not required. DCBX and PFC mode are auto-configured on Aggregator ports and FIP snooping is operational on the port. If the PFC parameters in a DCBX exchange with a peer are not synchronized, FIP and FCoE frames are dropped on the port.
• VLAN membership:
  • The Aggregator auto-configures the VLANs which handle FCoE traffic. You can reconfigure VLAN membership on a port ( vlan tagged command).
  • Each FIP snooping port is auto-configured to operate in Hybrid mode so that it accepts both tagged and untagged VLAN frames.
  • Tagged VLAN membership is auto-configured on each FIP snooping port that sends and receives FCoE traffic and has links with an FCF, ENode server or another FIP snooping bridge.
  • The default VLAN membership of the port should continue to operate with untagged frames. FIP snooping is not supported on a port that is configured for non-default untagged VLAN membership.