7705 SAR Interfaces
430
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
loopback
Syntax loopback {line | internal}
no loopback
Context config>port>sonet-sdh
Description This command activates a loopback on the SONET/SDH port. The SONET port must be in a
shutdown state to activate any type of loopback. The loopback setting is never saved to the
generated/saved configuration file.
Default no loopback
Parameters line — sets the port into a line loopback state. A line loopback loops frames received on
the corresponding port back towards the transmit (egress) direction. Line loopbacks
are supported on ports configured in network mode.
internal — sets the port into an internal loopback state. An internal loopback loops the
frames that are coming in an egress direction from the fabric towards the framer,
back to the fabric. This type of loopback is usually referred to as an equipment
loopback. Internal loopbacks are supported on ports configured in access mode.
report-alarm
Syntax [no] report-alarm [loc] [lais] [lrdi] [lb2er-sd] [lb2er-sf] [slof] [slos] [lrei]
Context config>port>sonet-sdh
Description This command enables logging of SONET/SDH line and section alarms for a SONET/SDH
port. When configured, logging is enabled for the raising and clearing of the specified alarms.
The no form of this command disables logging of the specified alarms.
Parameters loc — reports a loss of clock that causes the operational state of the port to be shut down
Default loss of clock alarms are issued
lais — reports line alarm indication signal errors
Default line alarm indication signal alarms are not issued
lrdi — reports line remote defect indication errors. Line remote defect indication errors
are caused by remote loss of frame (LOF), loss of clock (LOC), and loss of signal
(LOS) conditions.
Default line remote defect indication alarms are issued
Note: Loopback mode changes on a SONET/SDH port can affect traffic on the remaining
ports.
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