# ACI-based VLAN Subinterfaces per S-VLAN Overview

JunosE Software supports Agent Circuit Identifier-based (ACI) bulk configuration to build VLAN subinterfaces per S-VLAN on a VLAN or an S-VLAN subinterface. You can configure the number of ACI-based VLAN subinterfaces per S-VLAN at the interface level. The configuration settings are saved on the VLAN major interface. However, configuring the number of subinterfaces when the system is already operational or changing its value does not impact the existing VLAN subinterfaces, even if that number exceeds the newly configured limit value. Limiting the number of VLAN subinterfaces helps meet increased per subscriber bandwidth usage.

#### Related Documentation

- S-VLAN Overview
- Configuring an S-VLAN Subinterface
- Configuring the Number of ACI-based VLAN Subinterfaces per S-VLAN