Cisco Nexus 7000 Series NX-OS SAN Switching Configuration Guide
Virtual Domains
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Virtual Domains

Virtual Domains

Information About Virtual Domains

In a remote VSAN, the IVR application does not automatically add the virtual domain to the assigned domains list. Some switches (for example, the Cisco SN5428 switch) do not query the remote name server until the remote domain appears in the assigned domains list in the fabric. In such cases, add the IVR virtual domains in a specific VSAN to the assigned domains list in that VSAN. When adding IVR domains, all IVR virtual domains that are currently present in the fabric (and any virtual domain that is created in the future) will appear in the assigned domains list for that VSAN.


Be sure to add IVR virtual domains if Cisco SN5428 or MDS 9020 switches exist in the VSAN.VSAN. Be

When you enable the IVR virtual domains, links may fail to come up due to overlapping virtual domain identifiers. If this occurs, temporarily withdraw the overlapping virtual domain from that VSAN.


Withdrawing an overlapping virtual domain from an IVR VSAN disrupts IVR traffic to and from that domain.

Use the ivr withdraw domain command in EXEC mode to temporarily withdraw the overlapping virtual domain interfaces from the affected VSAN.


Only add IVR domains in the edge VSANs and not in transit VSANs.

Licensing Requirements

Product License
Cisco Nexus 7000 Series. IVR requires the FCoE license for each F-series module. FCoE enabled in a storage VDC does not require the Advanced Services License.

IVR also requires the Storage Enterprise License.

For a complete explanation of the Cisco NX-OS licensing scheme and how to obtain and apply licenses, see the Cisco NX-OS Licensing Guide.

Guidelines and Limitations

IVR has the following guidelines and limitations:

  • All border switches in the fabric must be Cisco SAN switches. Other switches in the fabric can be non-Cisco switches.
  • IVR must be enabled in the storage VDC.

Default Settings

Parameters Default
IVR feature Disabled
IVR NAT Disabled
IVR distribution Disabled
IVR Autotopology Disabled
IVR VSANs Not added to virtual domains
QoS for IVR Zones Low

Configuring IVR Virtual Domains


    1.    ivr virtual-fcdomain-add vsan-ranges vsan-range

    2.    (Optional) ivr commit

      Command or Action Purpose
    Step 1 ivr virtual-fcdomain-add vsan-ranges vsan-range

    switch(config)# ivr virtual-fcdomain-add vsan-ranges 1-4093

    Adds the IVR virtual domains to the configured VSANs.

    Step 2 ivr commit

    switch(config)# ivr commit

    Commit the IVR changes to distribute to all IVR-enabled switches in the fabric.


    Verifying IVR Configuration

    To display the IVR configuration, perform one of the following tasks:



    show ivr

    Displays the status for the IVR configuration.

    show ivr diagnostics

    Displays information about IVR diagnostics.

    show ivr merge status

    Displays information the last IVR merge event.

    show ivr pending

    Displays information about the IVR pending database.

    show ivr pending-diff

    Displays the differences between the pending database and the config database.

    show ivr vsan-topology [active | configured]

    Displays the IVR VSAN topology.

    show ivr session status

    Displays information about IVR CFS session.

    show ivr virtual-domains

    Displays information about IVR virtual domains for all local VSANs.

    show ivr zone

    Displays information about IVR zones.

    show ivr zoneset

    Displays information about IVR zone sets.

    show ivr service-group active

    Displays information about the active service group.
    show ivr service-group configured Displays information about the configured service group.
    show autonomous-fabric-id database Displays information about the AFIDs.
    show ivr virtual-fcdomain-add-status Displays the status of the IVR virtual domain configuration.

    Feature History

    Table 1  Feature History IVR

    Feature Name


    Feature Information



    This feature was introduced.