# interface fastEthernet

#### Syntax

[ no ] interface fastEthernet interfaceSpecifier

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Specifies a Fast Ethernet interface or subinterface or creates a subinterface over a Fast Ethernet interface. The no version removes the interface or subinterface.

#### Options

- interfaceSpecifier—Particular interface; format varies according to interface type; see Interface Types and Specifiers

#### Mode

Global Configuration

#### Related Documentation

- Configuring Customer-Facing Interfaces in the L2VPN Instance, Configuring Ethernet/VLAN Layer 2 Services, Configuring Local Cross-Connects Between Ethernet/VLAN Interfaces, and Configuring S-VLAN Tunnels for Layer 2 Services in the JunosE BGP and MPLS Configuration Guide