Nexus 5548UP FCoE

Question

Hi,
I'm trying to setup an connection from Netapp to n5k using CNA card on Netapp.
I've configured n5k as it should, but it seems that it always fails with:
2011 Jun 27 11:45:19 site1-n5k-sw1 %PORT-5-IF_TRUNK_DOWN: %$VSAN 50%$ Interface vfc31, vsan 50 is down (waiting for flogi)
Any ideas if it's configured wrongly on nexus side ... (?) Thanks.
feature fcoe
interface Ethernet1/23
  switchport mode trunk
  spanning-tree port type edge trunk
vlan 50
  fcoe vsan 50
vsan database
  vsan 50 interface vfc31
interface vfc31
  bind interface Ethernet1/23
  switchport trunk allowed vsan 50
  no shutdown
# sh vsan membership
vsan 50 interfaces:
    fc1/29            vfc31
n5k-sw1(config-if)# sh int vfc31
vfc31 is trunking
    Bound interface is Ethernet1/23
    Hardware is Virtual Fibre Channel
    Port WWN is 20:1e:00:05:73:f2:b0:bf
    Admin port mode is F, trunk mode is on
    snmp link state traps are enabled
    Port mode is TF
    Port vsan is 50
    Trunk vsans (admin allowed and active) (50)
    Trunk vsans (up)                       ()
    Trunk vsans (isolated)                 ()
    Trunk vsans (initializing)             (50)
    1 minute input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
    1 minute output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
      0 frames input, 0 bytes
        0 discards, 0 errors
      0 frames output, 0 bytes
        0 discards, 0 errors
    last clearing of "show interface" counters never
    Interface last changed at Mon Jun 27 11:43:17 2011
-n5k-sw1(config-if)# sh flogi database
INTERFACE        VSAN    FCID           PORT NAME               NODE NAME
fc1/29           50    0xb80000  20:41:00:05:73:e3:59:80 20:32:00:05:73:e3:59:81
Total number of flogi = 1.

Answer 1

Documentation says so
The Ethernet interface that you bind the virtual Fibre Channel interface to must be configured as follows:
•It must be a trunk port (use the switchport mode trunk command).
•The FCoE VLAN that corresponds to virtual Fibre Channel's VSAN must be in the allowed VLAN list.