Maximum Number of VLAN Subinterfaces by Device Model
The device model limits the maximum number of VLAN subinterfaces that you can configure. Note that you can configure subinterfaces on data interfaces only, you cannot configure them on the management interface. The following table explains the limits for each device model.
| Model | Maximum VLAN Subinterfaces |
| ASA 5508-X | 50 |
| ASA 5515-X | 100 |
|
ASA 5516-X |
100 |
|
ASA 5525-X |
200 |
|
ASA 5545-X |
300 |
| ASA 5555-X | 500 |
| Firepower 2100 | 1024 |
| Firepower Threat Defense Virtual | 50 |
| ISA 3000 | 25 |