для Cisco Cisco Packet Data Gateway (PDG)

loopback

Enables/disables loopback and configures the type of loopback mode used for diagnostic testing.

Product

SGSN

Privilege

Security Administrator, Administrator

Command Modes

Exec > Global Configuration > ATM Port Configuration

configure > port atm slot_number/port_number

Entering the above command sequence results in the following prompt:

[local]

host_name

(config-port-

slot_number/port_number

Syntax Description

loopback { ds1-e1-diag | ds1-e1-line | none | sonet-sdh-diag | sonet-sdh-line }

ds1-e1-diag

Enables a system generated diagnostic lookback signal at the DS1/E1 layer.

ds1-e1-line

Loops back a network diagnostic signal at the DS1/E1 layer.

none

Stops diagnostic loopback signalling.

sonet-sdh-diag

Enables a system generated diagnostic lookback signal at the SONET/SDH layer.

sonet-sdh-line

Loops back a network diagnostic signal at the SONET/SDH layer.

Usage Guidelines

Setup diagnostic loopback signals for troubleshooting purposes.

Examples

Use the following command to setup loopback diagnosis:
loopback ds1-e1-diag

Command Line Interface Reference, Modes A - B, StarOS Release 19

1792

ATM Port Configuration Mode Commands

loopback