IOM connecting FI error - Fabric unsupported connection

Question

Hi Guys,
Not sure if anyone face the same scenario with me.
I have a B series Chassis with two IOM card ( model : 2208XP) which is 8 external port / 10Gb.
while the bundle come with 8 10Gbase-CU cables, I connect the first 4 port on IOM-1 to Fi-A and first 4 port on IOM-2 to FI-B
IOM1      FI-A
1               Port 1
2               Port 2
3               Port 3
4               Port 4
IOM2      FI-B
1               Port 1
2               Port 2
3               Port 3
4               Port 4
However base on my observation the server port role works fine on IOM1 - FI-A
on IOM 2 we can only see fabric 2/1 to 2/3 ( 3 link) while the Led light on 2/4 is up but not shown in UCS manager.
There is also a major error message :
iom1/2 current connectivity does not match discovery policy or connectivity is unsupported
I also tried to access NXOS in the FI and notice that the port is up, show port-channel summary tell me 4 port channel are up.
Please refer to the attachment for screenshot.

Answer 1

Hi Manuel,
sorry for the late response. I tried to re-ack the chassis multiple time but not help.
Not sure why the fourth port is not able to configured into fex mode, although it is serverport in UCSM
UCS-FABRIC-A-B(nxos)# show fex
  FEX         FEX           FEX                       FEX              
Number    Description      State            Model            Serial    
  1        FEX0001                Online           N20-C6508   FCH17327EPD
UCS-FABRIC-A-B(nxos)#
UCS-FABRIC-A-B(nxos)# show int fex
     Fabric      Fabric       Fex                FEX          
Fex  Port      Port State    Uplink    Model         Serial   
  1   Eth1/23        Active     1         N20-C6508  FCH17327EPD
  1   Eth1/24        Active     2         N20-C6508  FCH17327EPD
  1   Eth1/25        Active     3         N20-C6508  FCH17327EPD
UCS-FABRIC-A-B(nxos)#
UCS-FABRIC-A-B(nxos)# show run int eth 1/23 - 26
!Command: show running-config interface Ethernet1/23-26
!Time: Wed Jan  8 03:27:19 2014
version 5.0(3)N2(2.11.3a)
interface Ethernet1/23
  description S: Server
  no pinning server sticky
  switchport mode fex-fabric
  fex associate 1 chassis-serial FOX1734GBBQ module-serial FCH17327EPD module-slot right
  no shutdown
interface Ethernet1/24
  description S: Server
  no pinning server sticky
  switchport mode fex-fabric
  fex associate 1 chassis-serial FOX1734GBBQ module-serial FCH17327EPD module-slot right
  no shutdown
interface Ethernet1/25
  description S: Server
  no pinning server sticky
  switchport mode fex-fabric
  fex associate 1 chassis-serial FOX1734GBBQ module-serial FCH17327EPD module-slot right
  no shutdown
interface Ethernet1/26
  description S: Server
  no pinning server sticky
  switchport mode trunk
  no shutdown
UCS-FABRIC-A-B(nxos)#