Cisco Cisco Packet Data Gateway (PDG)
loopback
Configures the type of loopback mode used for diagnostic testing.
The loopback command under the Channelized Port Configuration Mode is now deprecated, The command
will not be visible under the listing of available commands for Channelized Port Configuration Mode. If
the command is executed accidentally, the following error message is displayed:
will not be visible under the listing of available commands for Channelized Port Configuration Mode. If
the command is executed accidentally, the following error message is displayed:
Warning: loopback cli not supported for optical ports
Note
Product
SGSN
Privilege
Security Administrator, Administrator
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 signaling.
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
loopback ds1-e1-diag
Command Line Interface Reference, Modes C - D, StarOS Release 19
368
Channelized Port Configuration Mode Commands
loopback