Cisco ASR 9000 Series Command Reference Manual page 893

SONET Controller Commands on the Cisco ASR 9000 Series Router
loopback (SONET)
Related Commands
Command Description
show controllers sonet, on page 906 Displays information about the operational status of SONET
layers.
Cisco ASR 9000 Series Aggregation Services Router Interface and Hardware Component Command Reference,
Release 5.3.x
873