Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 378

Configuration Commands
speed
Syntax speed {oc3 | oc12}
no speed
Context config>port>sonet-sdh
Description This command configures the speed of a SONET/SDH port as either OC3 or OC12. The framer for
this MDA operates in groups of four. Changing the port speed for a port requires resetting the framer
and causes a slight disruption on all four ports. The first framer controls ports 1,2,3,4, the second
framer controls ports 5,6,7,8 etc.
To change the port speed on a SONET/SDH port, the port must be administratively shut down and all
channels must be removed. When the port speed is changed, the default channel configuration is
recreated.
The no form of this command reverts back to default.
Default oc12
Parameters
oc3 — set the speed of the port to OC-3.
oc12 — Set the speed of the port to OC-12.
suppress-lo-alarm
Syntax [no] suppress-lo-alarm
Context config>port>sonet-sdh
Description
This command enables the suppression of lower order alarms on SONET/SDH port such as MLPPP
bundle alarms, DS1/E1 links alarms and 336 APS channel groups alarms.
The no form of the command disables the suppression of lower order alarms on SONET/SDH port.
tx-dus
Syntax [no] tx-dus
Context config>port>ethernet>ssm
config>port>sonet-sdh
Description
This command forces the QL value transmitted from the SSM channel of the SONET/SDH port or
the Synchronous Ethernet port to be set to QL-DUS/QL-DNU. This capability is provided to block
the use of the interface from the SR/ESS for timing purposes.
Default no tx-dus
Page 378 7750 SR OS Interface Configuration Guide