Users Guide

• N_Port sends a Port Login (PLOGI) to inform the Fabric Name Server of its personality and capabilities, this includes WWNN,
WWPN.
• N_Port sends PLOGI to address 0xFFFFFC to register this address with the name server.
Command Description
show fc ns
switch
Display all the devices in name server database of the switch.
show fc ns
switch brief
Displays the local name server entries — brief version.
The following congurations are applicable only after conguring the switch mode to FCF Port mode using the feature fc
fport domain id 2 command. When you set Switch mode to FCF Port mode, any previously congured fcoe-map is removed.
FCoE Maps
To identify the SAN fabric to which FCoE storage trac is sent, use an FCoE map.
Using an FCoE map, an 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:
• The dedicated FCoE VLAN used to transport FCoE storage trac.
• 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.
• A server uses the priority 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. To access one SAN fabric, use
one FCoE map.
When you congure an M I/O Aggregator as an NPG, FCoE transit with FIP snooping is automatically enabled and congured 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 (using the no shutdown command), the NPG starts
sending FIP multicast advertisements on behalf of the FC port to downstream servers 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.
After removing and reapplying the fabric map or after modifying the FCoE map, the Fiber Channel (FC) devices do not re-login. To
mitigate this issue, you must rst run the shut command and then the no shutdown command on each member interface after you
alter the FCOE map.
Creating an FCoE Map
An FCoE map consists of the following elements.
• An association between the dedicated VLAN used to carry FCoE trac and SAN fabric where the storage arrays are installed.
Use a separate FCoE VLAN for each fabric to which FCoE trac is forwarded. Any non-FCoE trac sent on a dedicated FCoE
VLAN is dropped.
• The FC-MAP value used to generate the fabric-provided MAC address (FPMA). The server uses the FPMA to transmit FCoE
trac to the fabric. You can associate an FC-MAP with only one FCoE VLAN and vice versa.
• FCF priority: a CNA server uses the priority to select an upstream FCoE forwarder (FCF).
• FIP keepalive (FKA) advertisement timeout.
FC FLEXIO FPORT
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