Juniper JUNOSE 11.2.X PHYSICAL LAYER Configuration Manual page 214

For e series broadband services routers - physical layer configuration

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JunosE 11.2.x Physical Layer Configuration Guide

ethernet description

interface fastEthernet

192

Use to specify the duplex mode.

This command also works on the Fast Ethernet port on the SRP module on all E Series

routers. For more information, see JunosE System Basics Configuration Guide.

NOTE: If you set either the line speed or duplex mode to automatically negotiate by

using the automatically negotiate keyword, the router negotiates both parameters.

You can specify different values to prevent the router from negotiating these parameters.

Automatic negotiation is not supported for the FE-8 SFP I/O module. For this I/O module,

full duplex mode is the default.

Example

host1(config-if)#duplex full

Use the no version to revert to the default, either automatically negotiate or full duplex

(FE-8 SFP I/O module only)

See duplex.

Use to associate a text description of up to 64 characters with an Ethernet interface.

This command does not work for the Fast Ethernet port on the SRP module.

The description is displayed in the output for show configuration, show interfaces

fastEthernet, show interfaces gigabitEthernet, and show interfaces

tenGigabitEthernet commands.

Example

host1(config-if)#ethernet description abcd1234

Use the no version to remove the description from the interface.

See ethernet description.

Use to select a Fast Ethernet interface on a line module.

You can also use it to select a Fast Ethernet management port on an SRP I/O module

(ERX7xx models, ERX14xx models, and the ERX310 router) or an SRP IOA (E120 and

E320 routers). For information about managing the Fast Ethernet port on the SRP

module, see JunosE System Basics Configuration Guide.

Use the slot/port [.subinterface] format for Fast Ethernet interfaces on ERX7xx models,

ERX14xx models, and the ERX310 router . Use the slot/adapter/port format for the SRP

IOA on the E120 or E320 routers; the port on the SRP IOA is always identified by 0.

Example 1—Selects a Fast Ethernet interface on ERX7xx models, ERX14xx models, or

the ERX310 router

host1(config)#interface fastEthernet 1/0

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Junose 11.2.x