H3C Technologies H3C S10500 Series Switches - Manual (Page 28)

17
Enabling FCoE
To make the FCoE features operate, you must enable FCoE.
FCoE configuration task list
Tasks at a glance
(Required.) Enabling FCoE for a VLAN and mapping the VLAN to a VSAN
(Optional.) Setting the FC-MAP value
(Optional.) Setting the FKA advertisement interval value
(Optional.) Setting the FCF priority
Enabling FCoE for a VLAN and mapping the VLAN
to a VSAN
When you use a VFC interface to transmit packets, the Ethernet interface bound to the VFC interface
might allow multiple VLANs. You must enable FCoE for one of these VLANs and map a VSAN to the
VLAN. Then, the packets from the VSAN are tagged with the VLAN tag and transmitted within the VLAN.
After you enable FCoE for a VLAN, the following changes occur on the VLAN:
• An FCoE-capable VLAN allows only FCoE traffic.
• All member ports in an FCoE-capable VLAN are isolated and will not form loops. For this reason,
you do not need to enable STP or other loop detection protocols in an FCoE-capable VLAN.
Otherwise, FCoE links might be blocked.
• A Layer 2 protocol enabled in an FCoE-capable VLAN runs based on the topology where all
member ports in the VLAN are isolated at Layer 2.
Configuration restrictions and guidelines
When you configure this feature, follow these restrictions and guidelines:
• FCoE cannot be enabled for VLAN 1.
• VSANs are mapped to VLANs on a one-to-one basis.
• When you use a VFC interface to transmit packets, enable FCoE for the same VLAN and map this
VLAN to the same VSAN at both ends.
• Make sure the Ethernet interface bound to the VFC interface allows the FCoE-capable VLAN.
Configuration procedure
To enable FCoE for a VLAN and map the VLAN to a VSAN: