Dell PowerEdge FX2/FX2s - Manual (Page 252)

Term Description
an upstream FCoE switch operating as an FCF. FIP keepalive messages
maintain the connection between an FCoE initiator and an FCF.
NPIV N-port identifier virtualization: The capability to map multiple FCoE links
from downstream ports to a single upstream FC link.
principal switch The switch in a fabric with the lowest domain number. The principal
switch accesses the master name database and the zone/zone set
database.
DCB Maps
A Data Center Bridging (DCB) map is used to configure DCB functionality, such as PFC and ETS, on the
Aggregator with the Ethernet ports that support CEE traffic and are DCBx-enabled, by default.
By default, no PFC and ETS settings in a DCB map are applied to the Aggregator with the Ethernet ports
when they are enabled. On an Aggregator with the NPG, you must configure PFC and ETS parameters in
a DCB map and then apply the map to server-facing Ethernet ports.
FCoE Maps
An FCoE map is used to identify the SAN fabric to which FCoE storage traffic is sent. Using an FCoE map,
an Aggregator with the NPG operates as an FCoE-FC bridge between an FC SAN and FCoE network by
providing FCoE-enabled servers and switches with the necessary parameters to log in to a SAN fabric.
An FCoE map applies the following parameters on server-facing Ethernet and fabric-facing FC ports on
the Aggregator:
• The dedicated FCoE VLAN used to transport FCoE storage traffic.
• The FC-MAP value used to generate a fabric-provided MAC address.
• The association between the FCoE VLAN ID and FC fabric ID where the desired storage arrays are
installed. Each Fibre Channel fabric serves as an isolated SAN topology within the same physical
network.
• The priority used by a server to select an upstream FCoE forwarder (FCF priority).
• FIP keepalive (FKA) advertisement timeout.
NOTE:
In each FCoE map, the fabric ID, FC-MAP value, and FCoE VLAN must be unique. Use one FCoE
map to access one SAN fabric. You cannot use the same FCoE map to access different fabrics.
When you configure an Aggregator with the NPG, FCoE transit with FIP snooping is automatically enabled
and configured using the parameters in the FCoE map applied to server-facing Ethernet and fabric-facing
FC interfaces.
After you apply an FCoE map on an FC port, when you enable the port (no shutdown), the NPG starts
sending FIP multicast advertisements on behalf of the FC port to downstream servers in order to
advertise the availability of a new FCF port on the FCoE VLAN. The FIP advertisement also contains a
keepalive message to maintain connectivity between a SAN fabric and downstream servers.
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