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This chapter describes how to configure an admin virtual device context (VDC) on Cisco NX-OS devices.
Beginning with Cisco NX-OS Release 6.1 you can enable an admin VDC at the initial system bootup through a setup script. It is an optional step and the creation of an admin VDC is not required. An admin VDC is used for administrative functions only.
Beginning with Cisco NX-OS Release 6.2(2), the Supervisor 1 module supports an admin VDC with the same functionalities as Supervisor 2/2e modules. You can enable a default VDC or an admin VDC on the Supervisor 1 module. For the supported number of VDCs on Supervisor 1 and 2/2e modules, see the Cisco Nexus 7000 Verified Scalability Guide.
Beginning with Cisco NX-OS Release 6.2(2), all functionalities regarding the Supervisor 2e module on the Cisco Nexus 7000 Series switch is applicable to the Supervisor 2e module on the Cisco Nexus 7700 switch.
For more information on Supervisor modules and the Cisco Nexus 7700 switches, see the Cisco Nexus 7000 Series Hardware Installation and Reference Guide.
Admin VDCs are supported on Supervisor 1 and Supervisor 2/2e modules. When an admin VDC is enabled, only the mgmt0 port is allocated to the admin VDC.
Note The Advanced Services Package License and/or the VDC License are not required to enable the admin VDC.
You can create an admin VDC in one of the following ways:
1. After a fresh switch bootup, a prompt is displayed to select the admin VDC. Choose Yes at the prompt to create an admin VDC. This option is recommended for brand new deployments. It is not recommended to use this option when migrating from Supervisor 1 to Supervisor 2/2e. For more information on the Supervisor 1 to Supervisor 2/2e migration procedure, see the following document: http://www.cisco.com/en/US/docs/switches/datacenter/hw/nexus7000/installation/guide/n7k_replacing.html#wp1051017
2. Enter the system admin-vdc command after bootup. The default VDC becomes the admin VDC. All the nonglobal configuration in the default VDC is lost after you enter this command. This option is recommended for existing deployments where the default VDC is used only for administration and does not pass any traffic.
3. You can change the default VDC to the admin VDC with the system admin-vdc migrate new vdc name command. After entering this command, the nonglobal configuration on a default VDC is migrated to the new migrated VDC. This option is recommended for existing deployments where the default VDC is used for production traffic whose downtime must be minimized.
Note If the default VDC has Fabric Extenders that are enabled and configured, the migration of the default VDC configuration can take several minutes.
Admin VDCs have the following configuration guidelines and limitations:
The guidelines and limitations for migrating to an admin VDC with system admin-vdc and system admin-VDC migrate commands are as follows:
The guidelines and limitations for migrating to an admin VDC with the system admin-vdc migrate command only are as follows:
This example shows the prompts at a clean bootup to enable the admin VDC:
This example shows the show vdc output before the admin VDC is created:
This example shows the output of the system admin-vdc command after a bootup:
This example shows the show vdc output after executing the system admin-vdc command:
This example shows the output of the system admin-vdc migrate new vdc name command to migrate the default VDC to the admin VDC:
This example shows the show vdc output after the admin VDC is created:
For additional information related to implementing admin VDCs, see the following sections:
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Cisco Nexus 7000 Series NX-OS Virtual Device Context Command Reference |
Table 1-1 lists the release history for this feature.
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This feature was introduced on Supervisor 2 and Supervisor 2e modules. |