Failed:Error disabled - SFP vendor not supported on Fabric Interconnect 6248UP

Question

We are connecting a FC-uplink on a Fabric Interconnect 6248UP to a MDS9124. On the Fabric Interconnect side we use a 8Gbps SFP (DSpSFP-FC8G-SW) on the MDS9124 side there is a 4 Gbps SFP.This should work when speed is at fixed speed 4 Gbps on both sides (I was told). When the SFP's and cabling is connected I get an error in the UCS manager on the FC-uplink port we are using:
Failed:Error disabled - SFP vendor not supported.
I cannot change the speed on the FC-Uplink ( I can only set user-label). The Fabric Interconnect is configured for FC on the last 8 ports and that is where the SFP for the storage is located (port 31).

Answer 1

I have a similar problem.  I'm using port 1/41 and gets this output
show system firmware expand | head lines 10
UCSM:
   Running-Vers: 2.1(3a)
   Package-Vers: 2.1(3a)A
   Activate-Status: Ready
Catalog:
   Running-Vers: 2.1(3a)T
   Package-Vers: 2.1(3a)A
   Activate-Status: Ready
sh interface fc 1/41
fc1/41 is down (Error disabled - SFP vendor not supported)
   Hardware is Fibre Channel, SFP is Unknown(0)
   Port WWN is 20:29:00:2a:6a:7e:7b:00
   Admin port mode is F, trunk mode is off
   snmp link state traps are enabled
   Port vsan is 1
   Receive data field Size is 2112
   Beacon is turned off
   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 CRC, 0 unknown class
       0 too long, 0 too short
     0 frames output, 0 bytes
       0 discards, 0 errors
     0 input OLS, 0 LRR, 0 NOS, 0 loop inits
     0 output OLS, 0 LRR, 0 NOS, 0 loop inits
   last clearing of "show interface" counters never
show int fc 1/41 transceiver details
fc1/41 sfp is present but not supported
   name is CISCO-FINISAR  
   part number is FTLX8571D3BCL-C2
   revision is A  
   serial number is FNS17401NYG    
   FC Transmitter type is Unknown(0)
   FC Transmitter supports Unknown(0) link length
   Transmission medium is Unknown(0)
   Supported speeds are - Min speed: -1 Mb/s, Max speed: -1 Mb/s
   Nominal bit rate is 10300 MBits/sec
   Link length supported for 50/125mm fiber is 80 m(s)
   Link length supported for 62.5/125mm fiber is 20 m(s)
   No tx fault, no rx loss, no sync exists, diagnostic monitoring type is 0x68
   SFP Diagnostics Information:
                                     Alarms                 Warnings
Is this a firmware problem?