An FCF and an Enode negotiate whether the FCF or the Enode will provide a VN_Port MAC address for each virtual link. The Enode (also called a server) can provide a Server Provided MAC Address (SPMA), or the FCF can provide a Fabric Provided MAC Address (FPMA). An individual FPMA is assigned by the FibreChannel fabric to the VN_Port during fabric login. An FPMA address begins with the 24-bit FC-MAP prefix. The default value of the FC-MAP prefix is 0E:FC:00 but can be changed. The low order three octets of the FPMA will contain the FibreChannel fabric-assigned FibreChannel ID (also called a VN_Port_ID) for the virtual link.
This command configures the expected MAC address prefix (used when in FPMA mode) of all FPMA used on the FIP Snooping VLAN (Virtual LAN). The FPMA for a VN_Port is assigned by the FCF using its configured FC-MAP prefix to construct the VN_Port FPMA. Therefore the FC-MAP prefix configured on the switch must be the same as that configured on the FCF for the VLAN. The default value of mac_prefix is 0E:FC:00:00:00:00.
The mac_prefix value must be between 0e:fc:00 and 0e:fc:ff and the lower three MAC octets must be specified as zero or the following message will be displayed:
Error: Invalid FC-MAP, use 0e:fc:xx:00:00:00 where xx is a two-digit hexadecimal value.
The user should not use the same FIP Snooping VLAN for connection to more than one FibreChannel fabric or storage area network. Duplicate FPMA could be assigned by the different fabrics causing connectivity issues.
| fip |
FCoE Initialization Protocol. |
| snooping |
Snooping FIP frames. |
| vlan_name |
Name of the VLAN for which the FC-MAP prefix is to be changed. |
| fcmap |
24 prefix for MAC address assigned to VN Port in an FPMA mode. |
| mac_prefix |
24bit prefix of MAC followed by 24 zeros formatted as 0e:fc:xx:00:00:00 where xx is a two-digit hexadecimal number. |
The default value of mac_prefix is 0E:FC:00:00:00:00.
This command configures the expected MAC address prefix (used when in FPMA mode) of all FPMA used on the FIP Snooping VLAN.
configure fip snooping vlan v3 fcmap 0e:fc:01:00:00:00
This command was first available in ExtremeXOS 15.1.
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