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Key Technical Specifications
- Part Number: 3HE00707AA
- Description: 7750 SR 2-port 10GBASE Ethernet MDA
- Interface: 10GBASE Ethernet
- Ports: 2
- PHY Mode: LAN PHY
- Optics: Requires XFP optics
- Optics Support: Accepts up to 2 XFP modules
- Platform: Alcatel-Lucent / Nokia 7750 SR
- Application: Carrier Ethernet / uplink expansion
- Compatibility: Verify exact chassis, shelf, and software support before ordering
- Condition: New Original / New Surplus
Product Introduction
Alcatel Lucent 3HE00707AA is a 7750 SR two-port 10GBASE Ethernet MDA used for high-speed network uplink and carrier Ethernet expansion. It is an interface module that requires XFP optics and is listed as a LAN PHY design for the 7750 SR platform.
Buyers usually source this by exact part number because the chassis slot, optics type, and platform support all have to line up. The advantage is straightforward: you get a known 10G Ethernet expansion path for the 7750 SR without guessing on interface compatibility.
- 3HE00707AA
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Port stays down after install | Missing or wrong XFP optics | ✅ High | Confirm XFP type, reseat optics, check link LEDs | Install approved XFP modules first |
| Chassis does not detect module | Bad seating, slot issue, or unsupported shelf | ✅ High | Reseat card, inspect slot contacts, verify chassis model | Confirm shelf and software support |
| Link flaps under load | Fiber issue, optics mismatch, or signal loss | ✅ High | Swap fiber patch, check DOM readings, test known-good optics | Replace fiber/optics before replacing card |
| One port works, the other does not | Failed port, optics issue, or configuration mismatch | ✅ High | Swap optics between ports and recheck status | Isolate whether the fault follows the optics |
| Alarm after boot | Firmware or provisioning mismatch | ✅ Medium | Review shelf alarms and module inventory | Match platform software and configuration |
| No traffic despite link up | VLAN, routing, or service provisioning issue | ❌ Low | Check service configuration and forwarding tables | Verify network config before condemning hardware |
If you are stuck, contact technical support with photos and diagnostic logs.
Frequently Asked Questions
Q: What is the Alcatel Lucent 3HE00707AA?
A: It is a 7750 SR 2-port 10GBASE Ethernet MDA. In plain terms, it adds two 10G Ethernet interfaces to the 7750 SR platform.
Q: Does it need optics?
A: Yes. The card accepts up to two XFP optics modules, so the transceivers are part of the real bill of materials.
Q: Is this a direct replacement for any 7750 card?
A: No. It only works where the chassis, shelf, and software support this exact MDA and optics format.
Q: Why do sellers list it as used or refurbished?
A: This part is often traded through surplus channels because the platform is long-lived and many buyers want spares. The lower price usually reflects market source, not a different spec.
Q: Can I install it without checking the optics?
A: You can physically install it, but the ports will not come up correctly if the XFPs are wrong or missing. That is one of the most common mistakes on these cards.
Q: What should I verify before ordering?
A: Confirm the exact part number, compatible chassis, software support, and the XFP optic type you plan to use. Those four checks prevent most bad purchases.
Q: Is this new or refurbished?
A: In the surplus market, it may be New Original, New Surplus, or Refurbished. The listing should state which one clearly, along with test status and warranty terms.
