Concept Guide

FCOE MAP mode
fabric-id fabric-num vlan vlan-id
4 Congure the FCoE mapped address prex (FC-MAP) value which is used to identify FCoE trac transmitted on the FCoE VLAN for
the specied fabric.
FCOE MAP mode
fc-map fc-map-value
5 Congure the SAN fabric to which the FC port connects by entering the name of the FCoE map applied to the interface.
INTERFACE mode
fcoe-map <fcoe-map-name> {tengigabitEthernet slot/port | fortygigabitEthernet slot/port}
The FCoE map contains FCoE and FC parameter settings (refer to FCoE Maps). Manually apply the fcoe-map to any Ethernet ports
used for FCoE.
Name Server
Each participant in the FC environment has a unique ID, which is called the World Wide Name (WWN). This WWN is a 64-bit address.
A Fibre Channel fabric uses another addressing scheme to address the ports in the switched fabric. Each port in the switched fabric is
assigned a 24-bit address by the FC switch. When the device logs into the switch fabric on a specic port with its WWN, the switch
assigns the port address to that port, and the switch also maintains the correlation between the port address and the WWN address of the
device on that port. This function of the switch is implemented by using a name server, a database of objects in which the fabric attached
device registers its values.
FC-ID: 24-bit port address. Consists of three parts:
• Domain: Address of the switch itself. There are only 239 addresses available for switches in your SAN environment.
• Area: Identies a group of F_Ports. Each group of ports has a dierent area number, even if there is only one port in the group.
• Port: Provides 256 addresses for identifying attached N_Ports and NL_Ports.
The following sequence explains the operation for the attached N_Port:
• N_Port sends a Fabric Login (FLOGI) as it requests a unique 24-bit address from the Fabric Login Server.
• N_Port sends FLOGI to address 0xFFFFFE. Upon success, it obtains a valid address (FCID).
• 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:
FC FLEXIO FPORT
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