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3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Ports | 48 x 1000BASE-X SFP |
| Chassis Compatibility | BlackDiamond 8800 / 8900 Series |
| Switching Fabric | XL-series high-performance |
| Layer Support | Layer 2, 3, and 4 features |
| IPv4/IPv6 | Full support |
| Port Speed | 1 Gbps per port (fiber) |
| Module Type | Hot-swappable I/O module |
| Dimensions (H x W) | Approx. 1.6″ x 15.3″ |
| Operating Temperature | 0°C to 40°C (typical for series) |
| Management | Via ExtremeXOS on chassis MSM |
| Redundancy | Supports redundant chassis configurations |
4. Product Introduction
The Extreme Networks 8900-G48X-XL is a 48-port 1000BASE-X SFP I/O module designed for the BlackDiamond 8800 and 8900 series chassis. It provides high-density Gigabit Ethernet fiber connectivity for enterprise and data center aggregation layers where fiber runs are required.
This XL-series module delivers line-rate performance and integrates with the chassis fabric for full Layer 2-4 switching, including advanced IPv4 and IPv6 capabilities. Engineers choose it for reliable aggregation of edge switches and servers in environments that need dense SFP-based fiber links without compromising throughput.
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No link lights on multiple SFP ports | Transceiver or fiber issue | High | Verify SFP insertion, check link status in ExtremeXOS CLI (show ports), test with known-good transceiver | Replace transceiver or fiber cable first |
| Module not recognized by chassis | Slot seating or MSM issue | Medium | Check show slot output; reseat module | Power cycle chassis slot or verify compatibility with installed MSM |
| High error counters on ports | Dirty fiber or bad SFP | High | Run show port statistics and show port transceiver | Clean connectors or swap SFP |
| Module fails to boot or LED errors | Firmware mismatch or hardware fault | Medium | Check chassis logs for module errors | Verify ExtremeXOS version compatibility; test in another slot |
| Intermittent connectivity | Speed/duplex mismatch or cable length | Medium | Confirm auto-negotiation settings match connected device | Set matching parameters and test cable length |
If diagnostics point to the module after checking transceivers, cables, and chassis power, contact technical support with chassis logs, show tech-support output, and photos of LED status.
- 8900-G48X-XL
- 8900-G48X-XL
6. Frequently Asked Questions (FAQ)
Is the 8900-G48X-XL hot-swappable? Yes, these I/O modules support hot-swap in the BlackDiamond chassis. However, always follow the proper insertion/removal procedure in the ExtremeXOS documentation to avoid backplane issues. Kill traffic to the affected ports first when possible.
What transceivers does this module accept? It works with standard 1000BASE-SX, 1000BASE-LX, and other compatible Extreme Networks or third-party SFPs. Always verify the specific transceiver part number against the current ExtremeXOS compatibility list for your firmware version.
Is this module still supported? The BlackDiamond 8000 series reached end-of-sale years ago, but many units remain in production networks. We provide a 1-year warranty on new surplus stock. Firmware updates depend on your existing chassis MSM capabilities.
Can I use this as a direct replacement for an older 8900-G48X module? Yes, in most cases. The XL version offers enhanced performance. Confirm your chassis fabric modules (MSM) support the XL series before installation to avoid compatibility problems.
What is the difference between New Original and refurbished? New Original / New Surplus units come in original packaging, have never been deployed in the field, and pass full functional testing on our BlackDiamond test chassis. They are typically available at a lower cost than current-generation equivalents while delivering identical performance.
Does this module support PoE? No. The 8900-G48X-XL is a fiber SFP-only module. Use the 8900-G48T-XL variant if you need copper ports with optional PoE.
How do I verify firmware compatibility before purchase? Share your current chassis MSM model and ExtremeXOS version. We can confirm compatibility and note any required firmware on the module or chassis. Test reports from our bench are available upon request.
