Interface Naming

Each interface has the following components:

• An interface name that specifies the media type
• The slot where the FPC is located
• The location of the PIC on the FPC
• The PIC port

The interface name uniquely identifies an individual network connector in the system. You use the interface name when configuring interfaces and when enabling various functions and properties, such as routing protocols, on individual interfaces. The system uses the interface name when displaying information about the interface, for example, in the show interfaces command.

The interface name is represented by a physical part, a logical part, and a channel part in the following format:

physical<:channel>.logical 

The channel part of the name is optional for all interfaces except Channelized DS-3, E1, OC-12, and STM-1. For more information about channelized interfaces, see the JUNOS Network Interfaces and Class of Service Configuration Guide.