This chapter describes the Cisco QDD optical line system (OLS), including pluggable amplifier operation, DWDM deployment use cases, OTS controller configuration, safety controls, and OLS alarm troubleshooting.
It covers the Cisco QDD optical line system, a QSFP-DD pluggable optical amplifier for point-to-point DWDM links, including supported platforms, wavelength/frequency ranges, COM/Line subport behavior, and 8/16-channel deployment use cases.
It also provides configuration and verification procedures for OTS controllers, including amplifier gain or power mode, low power thresholds, OSRI, safety control mode, Force APR, and troubleshooting common OLS alarms.
QDD optical line systems
This topic explains how the QDD optical line system integrates amplification into a QSFP-DD pluggable module to interconnect routers or switches over a single-span point-to-point link, removing the need for an external optical line system chassis.
Multi-channel optical line system
This topic explains the 8-channel and 16-channel optical line system configurations that the QDD OLS pluggable supports, including the cables, modules, port assignments, and node interconnections used to extend fiber bandwidth and span reach.
Supported wavelength or frequency configuration
Adhere to these wavelength and frequency ranges when you configure channels that use the ONS-BRK-CS-8LC or ONS-BRK-CS-16LC passive mux cables on the QDD OLS pluggable to keep each channel within the supported operating bands.
Port mapping for QDD OLS pluggable
This topic explains how the COM and Line optical ports on the QDD OLS pluggable map to the optical transmission section (OTS) subport controllers, and identifies the booster and preamplifier associations used for configuration and troubleshooting.
QDD OLS configurations
This topic explains the configurations available on the QDD OLS pluggable, including operational mode, low-threshold power, optical safety remote interlock (OSRI), safety control, and force automatic power reduction (APR), and links to the procedure for each.
Types of OLS alarms and their troubleshooting procedures
This topic explains the main optical line system (OLS) alarm types that the QDD OLS pluggable reports and links to the troubleshooting procedure for each alarm.