Interface Configuration
7750 SR OS Interface Configuration Guide Page 343
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
xgig
Syntax xgig {lan |wan}
Context config>port>ethernet
Description This command configures a 10 Gbps interface to be in Local or Wide Area Network (LAN or WAN) 
mode. When configuring the port to be in WAN mode certain SONET/SDH parameters can be 
changed to reflect the SONET/SDH requirements for this port.
When the port is configured for LAN mode, all SONET/SDH parameters are pre-determined and not 
configurable.
Default lan 
Parameters lan  — Sets the port to operate in LAN mode
wan — Sets the port to operate in WAN mode.