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# Update the allocated IDs in a range for virtual MAC addresses

If you want to reserve or allocate IDs in a virtual MAC address range, you can update the allocated IDs.

To update a virtual MAC address range, perform a `PUT` operation to reapply all of the virtual MAC address attributes. View the virtual MAC address range attributes by using a `GET` operation, edit the attributes, and then perform a `PUT` operation using all of the attributes.

### Prerequisites

- Minimum required session ID privileges: Infrastructure administrator, Network administrator, or Server administrator

Updating the allocated IDs in a range for virtual MAC addresses using REST APIs
Select a virtual MAC address range URI. `GET /rest/id-pools/vmac` Get the virtual MAC address range and note the `allocatorUri`. `GET /rest/id-pools/vmac/ranges/`{id}`` Update the allocated IDs using the `allocatorUri` from step 2. `PUT /rest/id-pools/vmac/ranges/`{id}`/allocator`

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