Optics and Hardware Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases
Optics and Hardware Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases
This cumulative guide provides a single, continuously updated version that includes all the latest IOS XR features and release updates. It simplifies your experience by letting you bookmark one link and access the complete guide, instead of navigating through multiple release-specific versions.
Specific changes or updates tied to individual releases are clearly called out within the relevant sections. For a list of features introduced in a specific release, refer to the Release Notes or the IOS XR Feature Finder.
The table lists the release numbers for which this document has been updated since its initial publication.
| Date | Summary |
|---|---|
|
June 2026 |
First published for Release 26.2.1 |
This chapter describes Cisco 400G Digital Coherent QSFP-DD optics support, including platform compatibility, restrictions, traffic capabilities, and key configuration, monitoring, and troubleshooting procedures.
This chapter describes Cisco 800G QSFP-DD optics support, including breakout configuration, platform and port-pairing guidelines, and DP08QSDD-ZRB-19B 800G-ZR+ support for high-capacity DWDM/DCI connectivity.
This chapter describes Cisco IOS XR Optics Controller configuration, including optical module control, diagnostics, alarms, PRBS testing, and loopback procedures for monitoring and troubleshooting transceivers.
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.