5500 Configuration Optical Module

Cisco NCS 5500 routers support a variety of optical modules including CFP2-DCO, QSFP28, SFP+, and DWDM transceivers, which can be configured via IOS XR CLI for coherent and bidirectional operation.

Supported Optical Modules

The NC

S 5500 series supports multiple optical module types depending on the chassis and line card: CFP2 and CFP-DCO: Coherent modules for 100G/200G DWDM networks, including bidirectional CFP2-DCO for single-fiber operation. QSFP+, QSFP28, QSFP-DD: High-speed Ethernet transceivers supporting 10G, 25G, 40G, and 100G connections. SFP/SFP+: Standard 1G/10G Ethernet modules.

DWD

M SFP+: For dense wavelength division multiplexing applications.

Installation Guidelines

Always disconnect fiber-optic cables before inserting or removing transceivers to prevent damage. Use ESD-preventative wrist straps and ensure the router is grounded. Keep transceivers and fiber connectors clean and dust-free to maintain signal integrity; contamination can increase attenuation above 0.

35 dB. Avoid repeated insertion/removal to extend module lifespan.

Configuration Steps

Identify the module and slot: Controllers are represented in rack/slot/instance/port format (e.g., 0/3/0/1) and are created on startup. Clear previous configurations if replacing an optical module with a different type. Configure coherent DSP controllers for CFP-DCO modules using commands like controller coherentDSP secondary-admin-state maintenance to place controllers in maintenance mode.

Verify optics parameters with show controllers optics r/s/i/p to check laser state, admin state, and alarms. Configure bidirectional CFP2-DCO modules for Tx-Rx channel mapping, supporting 100G/200G speeds over single fiber using NC55-MPA-2TH-S or NC55-MPA-1TH2H-S MPAs. Operational ConsiderationsCFP2-DCO modules have hardware versions A0 and B0; version B0 supports 100G/Staircase FEC traffic.

Dual-rate optics may experience initial link flaps when configured at lower speeds, which stabilize automatically. Compatibility between Coherent Line Cards depends on IOS XR release versions; ensure matching versions to avoid incompatibility.

Verification

Use show controllers optics to monitor link status, laser power, and error thresholds. For bidirectional modules, verify communication between Tx and Rx channels to ensure proper operation. By following these guidelines, Cisco NCS 5500 optical modules can be safely installed, configured, and monitored for high-speed, coherent, and bidirectional network operations.