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Is it possible to configure one port in UTA2 port pair to FC and other port to CNA mode?

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fas-systems
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network
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Applies to

  • Product Model: AFF8020-R6
  • OS: Clustered Data ONTAP 8.3.1
  • Category 2: FAS

Answer

UTA2 ports can be configured as FC target/initiator or CNA (FCoE target/Ethernet) mode.
FC target mode is the default configuration for X1143A-R6 adapter ports. However, ports on this adapter can be configured as either 10-Gb Ethernet and FCoE ports or as 16-Gb FC ports.

Current configuration [Both the ports are configured as FC target mode by default]:
aff::*> ucadmin show -node aff-01 -adapter 0c
 
                 Node: aff-01
              Adapter: 0c
         Current Mode: fc
         Current Type: target
         Pending Mode: -
         Pending Type: -
Administrative Status: online
      Supported Modes: fc, cna
   Supported FC Types: initiator, target
  Supported CNA Types: target
 
aff::*> ucadmin show -node aff-01 -adapter 0d
 
                 Node: aff-01
              Adapter: 0d
         Current Mode: fc
         Current Type: target
         Pending Mode: -
         Pending Type: -
Administrative Status: online
      Supported Modes: fc, cna
   Supported FC Types: initiator, target
  Supported CNA Types: target

aff::> system node hardware unified-connect show
                       Current  Current    Pending  Pending    Admin
Node          Adapter  Mode     Type       Mode     Type       Status
------------  -------  -------  ---------  -------  ---------  -----------
aff-01        0c       fc       target     -        -          online
aff-01        0d       fc       target     -        -          online
2 entries were displayed.

Restriction on UTA2 Port pairs since they are connected to the same ASIC.

Port pairs connected to the same ASIC must be configured in the same mode. So both ports must be configured for the same mode and use the same SFP+ type.
Note: After changing the mode type of one port, the other port also gets changed.

Ensure the adapter must be offline to modify the mode:

aff::> network adapter modify -node aff-01 -adapter 0c -state down

aff::> system node hardware unified-connect modify -node aff-01 -adapter 0c -mode cna -type target -force true.Any changes will take effect after rebooting the system. Use the "system node reboot" command to reboot.

aff::> system node hardware unified-connect show
                       Current  Current    Pending  Pending    Admin
Node          Adapter  Mode     Type       Mode     Type       Status
------------  -------  -------  ---------  -------  ---------  -----------
aff-01        0c       fc       target     cna      -          offline
aff-01        0d       fc       target     cna      -          offline
2 entries were displayed.


Therefore, it is not possible to configure one port in a UTA2 port pair as FC target/initiator and the other port in the CNA (FCoE target/Ethernet) mode.

Additional Information

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