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Command Reference

PA-E3 and PA-2E3 Serial Port Adapter 11

loopback

To loop the serial interface on a PA-E3 port adapter, use the loopback interface configuration

command. To remove the loopback, use the no form of this command.

loopback {dte | local | network {line | payload}}

no loopback

Syntax Description

Default

Disabled

Command Mode

Interface configuration

Usage Guidelines

This command first appeared in Cisco IOS Release 11.1 CA.

Use this command for troubleshooting purposes.

To verify that a loopback is configured on the interface, use the show interface serial or show

interfaces loopback EXEC command.

Example

The following example configures the serial interface located in slot 3/0/0 for a local loopback:

interface serial 3/0/0

loopback local

Related Command

show interfaces serial

dte Sets the loopback after the LIU toward the terminal.

local Sets the loopback after going through the framer toward the

terminal.

network {line | payload} Sets the loopback toward the network before going through the

framer (line) or after going through the framer (payload).

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Cisco RSP7000 Manual de usuario Pagina 11