# interface serial

#### Syntax

[ no ] interface serial interfaceSpecifier

#### Release Information

Command introduced before JunosE Release 7.1.0.

#### Description

Specifies the location of the serial interface on CT3 and COCX-F3 modules. The no version disables the interface.

#### Options

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

#### Mode

Global Configuration

#### Related Documentation

- Configuring Frame Relay Layer 2 Services and Configuring HDLC Layer 2 Services in the JunosE BGP and MPLS Configuration Guide