VDC - [Part 3] - TYPES OF VDC

Default VDC

• When you will be first login into Nexus 7K Switch, then you will be in Default VDC .
• When Nexus 7K Series switch is booted first, then, in the modular switch platform all interfaces of all line cards are placed in the default VDC.
• VDC-1 is the default VDC
• Default VDC always exists and can not be removed.
• It is used to manage other VDCs
• It can be used for normal data plane but recommended for management of chassis only
• You can assign any interface to default VDC and it can forward the traffic like non-default VDC.
• You can perform following tasks in default VDC.

1. Creation, updation and deletion of VDC
2. Allocation of Resources like Interfaces, memory
3. Control Plane Policing
4. NX-OS Up-gradation over all VDC

Admin VDC

• You can create Admin VDC from the initial configuration wizard.
• Basically Admin VDC is used to manage other VDCs.
• Only Management interface will be assigned to Admin VDC.
• We can create Admin VDC via below two methods.

1. You can create Admin VDC via command 'system admin-vdc'  after booting of Nexus OS. Via this command  Default VDC will become Admin VDC.
2. You can create Admin VDC via command 'system admin-vdc migrate new-vdc name' . All the configurations will migrate to New VDC from Default VDC.

• If you will enable ADMIN VDC, then it will replaces the default VDC.
• At the same time both Default and admin VDC cannot be present in Nexus Switch.
• ADMIN VDC is not able to handle user traffic like Default VDC.

Non Default VDC

• You can create Non Default VDC from Default VDC or Admin VDC.
• If you will make any changes in Non Default VDC, then it will not affect other VDCs.
• Each VDC has its own stored configuration file.
• Non Default VDC is responsible to handle the user traffic,  interfaces can be allocated to it.

Storage VDC

• Required Storage VDC, when you will need to implement SAN functions on Nexus Switch.
• You can allocate two different types interfaces to storage VDC - FCOE Interface and Shared Interface

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Anubhav Upadhyay

Hello and welcome to networktopic Blog. My name is Anubhav. I am a Senior Network Egineer. I have created this blog specially to serve interview questions and answer on Network Routing and Switching, I will try my best to serve correct and updated networking knowledge for you as per my corporate experience.

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