# Range Vector Hardware Classifiers and Interface Attachment Resources

Range vector classifiers, which include all software classifiers and FPGA-based hardware classifiers, consume one interface attachment resource for every 32 classifier entries in a policy.

The following examples illustrate how JunosE Software allocates interface attachment resources. These examples apply to software and FPGA-based hardware policies:

- A policy with 0 classifier entries consumes 1 interface attachment resource.
- A policy with 1–32 classifier entries consumes 1 interface attachment resource.
- A policy with 33–64 classifier entries consumes 2 interface attachment resources.
- A policy with 65–96 classifier entries consumes 3 interface attachment resources.
- A policy with 487–512 classifier entries consumes 16 interface attachment resources.