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3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Ports | 12 x 40GBASE-X QSFP+ |
| Chassis Compatibility | BlackDiamond X8 Series |
| Maximum Ports per Chassis | Up to 96 x 40GbE (with 8 modules) |
| Switching Capacity | Supports full line-rate with appropriate fabric modules |
| Transceiver Support | QSFP+ optics, DAC, AOC |
| Fabric Support | Works with 2.56 Tbps or 5.12 Tbps fabric modules |
| Hot-Swappable | Yes |
| Layer Support | Full L2/L3 via chassis ExtremeXOS |
| Optics | Not included |
4. Product Introduction
The Extreme Networks BDXA-40G12X is a 12-port 40GBASE-X QSFP+ I/O module for the BlackDiamond X8 chassis. It delivers high-density, low-latency 40 Gigabit Ethernet connectivity for core and aggregation deployments in large enterprise and data center networks.
This module scales to massive port counts while maintaining wirespeed performance. It pairs with the X8 chassis fabric for demanding environments that require 40GbE aggregation of switches, servers, or storage systems.
- BDXA-40G12X
- BDXA-40G12X
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No link on QSFP ports | Transceiver or cable fault | High | Use show ports and show port transceiver in ExtremeXOS | Test with known-good QSFP+ and cable |
| Module not powering up | Slot or fabric issue | High | Check show slot and fabric status | Reseat module; verify compatible fabric module |
| High packet loss or errors | Overheating or dirty optics | Medium | Monitor temperature and interface counters | Clean connectors and ensure chassis cooling |
| Partial port failure | Individual transceiver failure | High | Isolate per-port statistics | Replace specific QSFP+ transceiver |
| Chassis fabric alarms | Oversubscription or configuration | Low | Review overall chassis utilization | Adjust load balancing or add fabric capacity |
Contact technical support with chassis logs, show tech-support, and module status if issues persist after basic checks.
6. Frequently Asked Questions (FAQ)
Is the BDXA-40G12X hot-swappable? Yes. These I/O modules support hot-swap in the BlackDiamond X8 chassis. Schedule the change during a maintenance window and follow ExtremeXOS procedures to minimize impact.
What QSFP+ options does this module support? It accepts standard 40G QSFP+ transceivers, direct-attach copper cables, and active optical cables. Refer to the ExtremeXOS hardware compatibility list for your specific software release.
Can ports be broken out to 4x10G? Yes, many QSFP+ transceivers and software versions support 4x10G breakout mode on this module. Confirm exact support in your VOSS/ExtremeXOS documentation.
Is this module still supported? The BlackDiamond X8 series has reached end-of-sale, but functional units remain in service. New surplus stock is available with full testing and a 1-year warranty.
How many of these modules fit in one X8 chassis? Up to 8 modules per chassis, delivering up to 96 x 40GbE ports when paired with sufficient fabric modules.
What fabric modules are required? It works with both 2.56 Tbps and 5.12 Tbps fabric options. Higher-capacity fabrics provide better non-blocking performance at scale.
How do I verify compatibility with my existing X8 chassis? Share your current fabric module types and software version. We can confirm support and provide test report details from our validation rack.
