Cisco DP04QSDD-ULH-A1 | 400G QSFP-DD Coherent Transceiver, Ultra Long-Haul, 3000km

Q: What is the maximum transmission distance for the DP04QSDD-ULH-A1?
A: This module supports ultra-long-haul transmission exceeding 3000 km over amplified DWDM optical networks, making it ideal for regional and long-haul backbone applications where traditional transponders were previously required.

Q: Is this transceiver compatible with existing Cisco router platforms?
A: Yes, the DP04QSDD-ULH-A1 is compatible with all Cisco 400G-capable routers including NCS 5500 series and other platforms supporting QSFP-DD form factor. It operates within the standard 24W power envelope supported by existing infrastructure.

Q: What network architectures does this coherent module support?
A: The module is designed for IP-over-DWDM routed optical networking, data center interconnect, ultra-long-haul regional networks, and disaggregated transport architectures. It supports OpenZR+ and OpenROADM standards for multi-vendor interoperability.

Q: Can the wavelength be tuned for DWDM applications?
A: Yes, the DP04QSDD-ULH-A1 features C-band tunability across 1528-1568 nm with support for flexible grid spacing, allowing dynamic wavelength provisioning in DWDM systems for optimal spectrum utilization.

Q: What client interfaces are supported on this module?
A: The transceiver supports multiple Ethernet configurations including 400GE, OTU4, 4x100GE, 2x100GE, and 1x100GE, providing flexibility for various network deployments and migration scenarios.