# Configuring VLAN and S-VLAN Subinterfaces

This chapter describes how to configure VLAN and S-VLAN subinterfaces on E Series routers.

This chapter contains the following sections:

- VLAN Overview
- S-VLAN Overview
- VLAN and S-VLAN Platform Considerations
- VLAN and S-VLAN References
- Creating a VLAN Subinterface
- Configuring an S-VLAN Subinterface
- Configuring S-VLAN Tunnels for Layer 2 Services over MPLS
- S-VLAN Oversubscription
- ACI-based VLAN Subinterfaces per S-VLAN Overview
- Configuring the Number of ACI-based VLAN Subinterfaces per S-VLAN
- Monitoring VLAN and S-VLAN Subinterfaces