loopback
Specifies the loopback mode for a module controller or interface. The no version clears all loopback on the module or interface (the default), or deletes the mapping to the user domain name.
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NOTE: In Domain Map Configuration mode, this command has been replaced by the local-interface command and may be removed completely from Domain Map Configuration mode in a future release. |
For module controllers, the options available vary depending on the module being configured.
loopback { local | network | payload }
cOCx/STMx SONET controller (SONET/SDH section layer), OCx/STMx line modules:
loopback { local | network | payload }
- local—Loops the data back toward the router; on supported line modules also sends an alarm indication signal (AIS) out toward the network.
- network payload—Loops the data toward the network after the framer has processed the data.
- network line—Loops the data toward the network before the data reaches the framer.
- remote—Sends a signal notifying the device at the remote end to activate or deactivate the line loopback.
- network—Loops the data toward the network before the data reaches the framer.
- payload—Loops the data toward the network after the framer has processed the data.
For interfaces; the options available vary depending on the interface being configured.
ATM interface (cannot be used on a subinterface):
loopback { diagnostic | line }
[ no ] loopback { internal | line }
- diagnostic—Places the interface into internal loopback
- line—ATM interface: places the interface into external loopback; POS interface: connects the received network signal directly to the transmit network signal. When configured in line loopback mode, the router never receives data from the network.
- internal—Connects the local transmitted signal to the local received signal
Controller Configuration, Interface Configuration
Release Information Command introduced before JUNOSe Release 7.1.0.