Description
Product Introduction
The Alcatel-Lucent Enterprise OS10K-XNI-U16E (Part Number 903139-90) is a high-performance 16-port 10 Gigabit Ethernet (10GbE SFP+) network interface module designed for the flagship OmniSwitch 10K (OS10K) Modular Chassis platform. Built to serve as the core backbone in high-density enterprise networks, data centers, and campus aggregation hubs, this line card provides wire-speed throughput with low-latency hardware packet processing.
The “U” designation in OS10K-XNI-U16E signifies an unencumbered port architecture, delivering full line-rate performance across all 16 SFP+ ports simultaneously without internal oversubscription or throughput throttling. Housed in a hot-swappable modular form factor, it integrates into the OS10K crossbar switch fabric, supporting dynamic Virtual Network Switching (VNS), Quality of Service (QoS), and hardware-based IPv4/IPv6 routing.
Key Technical Specifications
| Parameter | Specification / Value |
| Manufacturer | Alcatel-Lucent Enterprise (ALE) / Nokia |
| Model / Part Number | OS10K-XNI-U16E |
| Order / Part Code | 903139-90 |
| Compatible Platform | OmniSwitch 10K (OS10K) Modular Chassis Chassis |
| Port Density & Media | 16x 10 Gigabit Ethernet (10GbE) SFP+ Optical Cages |
| Performance Architecture | Unencumbered / Non-blocking wire-speed switching |
| Transceiver Support | 10GBASE-SR, 10GBASE-LR, 10GBASE-ER, 10GBASE-ZR, and SFP+ Direct Attach Copper (DAC) |
| Forwarding Capabilities | Hardware-based Layer 2 switching and Layer 3 (IPv4/IPv6) routing |
| Hot-Swap Support | Supported (Hot-Swappable In-Service Insertion and Removal) |
| Operating System | Managed via Alcatel-Lucent Operating System (AOS) |
| Operating Temperature | Standard Enterprise Data Center Conditions (0°C to 45°C) |
Application Scenarios & The “Trench” Experience
Picture this: It’s 2:00 AM on a scheduled network maintenance window at a major regional hospital data center. The core network operates on an OmniSwitch 10K chassis aggregating dozens of building access switches and high-speed storage arrays. An existing 10GbE aggregation line card suffers a port controller failure, dropping high-bandwidth connections to critical PACS medical imaging servers. Unboxing a verified OS10K-XNI-U16E (903139-90) replacement, inserting the module into the chassis slot, and re-attaching the 10G SFP+ LC fiber jumpers allows the AOS operating system to automatically provision the line card—restoring 160 Gbps of core bandwidth in minutes without rebooting the main chassis.
- Enterprise Campus Core Aggregation – Aggregates high-volume 10G uplink feeds from distribution and access switches across multi-building university or corporate campus networks.
- Data Center Storage & Virtualization – Connects high-density SAN/NAS storage arrays and VMware ESXi server clusters requiring low-latency 10GbE interconnectivity.
- High-Density Uplink Backbone – Delivers unencumbered 10G wire-speed routing between core distribution layers and perimeter firewalls or edge routers.
Transparency SOP: Quality Assurance & Testing
Every module undergoes a comprehensive bench audit before dispatch:
- Physical & Port Cage Inspection: Visual examination of gold-finger backplane connectors, slot guide rails, front faceplate levers, and all 16 SFP+ optical port cages to verify zero pin deformation or physical wear.
- Chassis Boot & AOS Diagnostics: Inserted into an OmniSwitch 10K test chassis to verify clean initialization, hardware EEPROM recognition, and part number validation (
903139-90) via AOS CLI commands (show module,show hardware-info). - Full Wire-Speed Traffic Stress Test: All 16 SFP+ ports are fitted with 10G transceivers/loopback plugs and subjected to continuous packet forwarding tests to confirm zero frame drops or CRC errors at maximum 160 Gbps line rate.
- Thermal & Power Rail Verification: System diagnostic logs checked to confirm stable internal DC-DC power converters and normal operating temperatures under full load.
- Anti-Static Cleaning & ESD Packaging: Neutralized against static discharge, fitted with protective rubber dust plugs on all 16 SFP+ cages, vacuum-sealed in anti-static ESD shielding bags, and packed in reinforced custom foam containers.

OS10K-XNI-U16E (903139-90)

OS10K-XNI-U16E (903139-90)
The Veteran’s Tech Trap Guide (Crucial Value-Add)
- ⚠️ Verify “U” (Unencumbered) vs. Oversubscribed Module Variant!
The
OS10K-XNI-U16Eis an unencumbered (U) module, meaning every port receives dedicated ASIC switching bandwidth for 1:1 non-blocking throughput. Do not confuse this with oversubscribed line cards, which share ASIC bandwidth across port groups. Ensure your chassis backplane fabric and power supply budget account for unencumbered line card power density. - ❗ Verify Alcatel-Lucent Operating System (AOS) Release Code
Before installing the 903139-90 card into an active OS10K chassis, check that your running AOS software version supports this specific line card hardware build. Inserting new line card revisions into outdated AOS code releases can result in
Module UnrecognizedorAOS Image Mismatchstatus flags. - ⚠️ Use Approved Alcatel-Lucent / MSA Compliant SFP+ Optics
While the SFP+ cages accept standard Multi-Source Agreement (MSA) transceivers, using non-coded third-party optical transceivers can trigger software warnings (
Unapproved Transceiver Detected) or cause intermittent link flapping in AOS. - ❗ Observe Proper Chassis Slot Alignment & ESD Safety
The -XNI-U16E is a heavy, full-depth chassis card. Guide the module along the slot tracks carefully and engage both top and bottom latching handles simultaneously to seat the card into the backplane. Always wear a grounded ESD wrist strap to protect sensitive high-speed ASICs from static damage.
Frequently Asked Questions (FAQ)
Q: What is the difference betweet number and ordering number 903139-90?
A: is the functional model designation detailing the 16-port 10GbE unencumbered specification. 903139-90 is Alcatel-Lucent Enterprise’s exact 6-digit manufacturing/part ordering code.
Q: Can this module be hot-swapped into an active OmniSwitch 10K chassis?
A: Yes. The OmniSwitch 10K platform fully supports In-Service Insertion and Removal (HOT-SWAP). Unlatching the card ejector handles alerts the AOS operating system to gracefully shut down port interfaces prior to physical extraction.
Q: Does this line card support 1G SFP transceivers as well as 10G SFP+ transceivers?
A: Yes. The SFP+s on the are dual-speed compliant, supporting standard 1G SFP transceivers (e.g., 1000BASE-SX, 1000BASE-LX) as well as 10G SFP+ transceivers (10GBASE-SR, 10GBASE-LR) and SFP+ Direct Attach Copper (DAC) cables.




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