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34 lines
1.6 KiB
Markdown
34 lines
1.6 KiB
Markdown
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# Virtual Device Context
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A virtual device context (VDC) represents a logical partition within a physical device, to which interfaces from the parent device can be allocated. Each VDC effectively provides an isolated control plane, but relies on shared resources of the parent device. A VDC is somewhat similar to a virtual machine in that it effects isolation between various components, but stops short of delivering a fully virtualized environment.
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Each VDC must be assigned to a device upon creation, after which interfaces belonging to that device can be assigned to one or more of its VDCs. A VDC can have any number of interfaces assigned to it, and an interface can belong to any number of VDCs.
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!!! info "A VDC by Any Other Name"
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Network vendors use differing names for this concept. Cisco uses the term VDC, whereas Juniper refers to it as a _Virtual Routing Instance_, and Fortinet uses _Virtual Domain_, for instance. While there may be some nuance among the vendors' unique implementations, the general concept remains the same for each.
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## Fields
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### Device
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The device to which this VDC belongs.
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### Name
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The VDC's configured name. Must be unique to the assigned device.
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### Status
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The operational status of the VDC.
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### Identifier
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A vendor-prescribed unique identifier for the VDC (optional). Must be unique to the assigned device if defined.
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### Primary IPv4 & IPv6 Addresses
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Each VDC may designate one primary IPv4 address and/or one primary IPv6 address for management purposes.
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!!! tip
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NetBox will prefer IPv6 addresses over IPv4 addresses by default. This can be changed by setting the `PREFER_IPV4` configuration parameter.
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