Juniper to NVIDIA/Mellanox Dual-Coded 100G QSFP28 Passive DAC Cable — 3m, JNP-MLNX-100G-DAC-3M-C
Warranty: Lifetime
One cable, two vendors — Juniper coding on the switch end, NVIDIA/Mellanox coding on the NIC end
JNP-MLNX-100G-DAC-3M-C — 100G QSFP28 to QSFP28 passive DAC, Juniper / NVIDIA-Mellanox dual-coded, 3m
→ Built for Juniper switch to ConnectX NIC. Our customers use it from a Juniper QFX5200-32C to NVIDIA ConnectX-5 and ConnectX-7 adapters. Tell us both device models and we will confirm before it ships.
SKU: JNP-MLNX-100G-DAC-3M-C
Description: 100G QSFP28 passive direct-attach copper cable, 4x 25G NRZ lanes, Juniper coding on end A and NVIDIA/Mellanox coding on end B, 3 m
A 100G QSFP28 DAC carries four 25G NRZ lanes over passive twinax. This one is dual-coded so a Juniper switch and an NVIDIA/Mellanox ConnectX adapter each see a cable coded for them.
Dual-coded means each end identifies as its own vendor. The Juniper end presents Juniper coding to the switch; the other end presents coding for the device it plugs into. That avoids unsupported-transceiver errors on both sides.
Which One Do I Need?
| Connecting | Part |
|---|---|
| Juniper QFX to NVIDIA ConnectX, 100G, up to 3 m | JNP-MLNX-100G-DAC-3M-C — this listing |
| Juniper to Juniper, 100G, 3 m | JNP-100G-DAC-3M Juniper compatible 100G DAC, 3 m |
| Juniper to Juniper, 100G, 1 m | QFX-QSFP28-DAC-1M Juniper compatible 100G DAC, 1 m |
| Longer runs over fiber | JNP-QSFP-100G-SR4 Juniper compatible 100G SR4 or JNP-QSFP-100G-LR4 Juniper compatible 100G LR4 |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | JNP-MLNX-100G-DAC-3M-C |
| Ends | QSFP28 to QSFP28 |
| Data rate | 100 Gb/s (4 x 25G NRZ) |
| Cable type | Passive twinax copper |
| Length | 3 m (9.8 ft) |
| Coding | End A: Juniper · End B: NVIDIA/Mellanox |
| Typical use | Juniper QFX5200-32C to ConnectX-5 / ConnectX-7 at 100G |
| Condition | New |
| Warranty | Lifetime, backed by Resilient Tec |
Source: Juniper Pathfinder hardware specifications for Juniper passive DACs (JNP-100G-DAC-3M, QFX-SFP-DAC-3M). Coding and end-to-end testing by Resilient Tec.
Good to Know
- Orientation matters. The Juniper-coded end goes in the Juniper switch. Ends are labeled.
- QSFP112 ports. Some ConnectX-7 adapters have QSFP112 cages, which accept QSFP28 cables at 100G. Confirm the port speed setting on the adapter.
- FEC must match. At 100G, both ends need the same FEC mode (usually RS-FEC). A mismatch is the most common cause of no link.
Quick Checklist — Is This the Right Cable?
You are linking a Juniper switch to an NVIDIA/Mellanox ConnectX adapter at 100G. The two ports are within 3 m. You want one cable that both ends accept without unsupported-optic warnings.
Availability
New, coded and tested · Ships from Resilient Tec in Knoxville, TN · Free standard shipping on US orders.
We confirm stock and lead time with you before an order ships. Need a different length, or different coding on each end? We build dual-coded cables to order. Request a quote →
Warranty: lifetime, backed by Resilient Tec — not a manufacturer term. When something fails you reach a named seller in the US, not a ticket queue.
You Might Also Need
- JNP-100G-DAC-3M Juniper compatible 100G DAC, 3 m — Juniper to Juniper
- JNP-QSFP-100G-SR4 Juniper compatible 100G SR4 — over multimode fiber
- NVIDIA/Mellanox compatible cables
Related Guides
Custom Dual-Coded DAC and AOC Builds from Resilient Tec
One cable, two vendors — Juniper coding on the switch end, NVIDIA/Mellanox coding on the NIC end
JNP-MLNX-100G-DAC-3M-C — 100G QSFP28 to QSFP28 passive DAC, Juniper / NVIDIA-Mellanox dual-coded, 3m
→ Built for Juniper switch to ConnectX NIC. Our customers use it from a Juniper QFX5200-32C to NVIDIA ConnectX-5 and ConnectX-7 adapters. Tell us both device models and we will confirm before it ships.
SKU: JNP-MLNX-100G-DAC-3M-C
Description: 100G QSFP28 passive direct-attach copper cable, 4x 25G NRZ lanes, Juniper coding on end A and NVIDIA/Mellanox coding on end B, 3 m
A 100G QSFP28 DAC carries four 25G NRZ lanes over passive twinax. This one is dual-coded so a Juniper switch and an NVIDIA/Mellanox ConnectX adapter each see a cable coded for them.
Dual-coded means each end identifies as its own vendor. The Juniper end presents Juniper coding to the switch; the other end presents coding for the device it plugs into. That avoids unsupported-transceiver errors on both sides.
Which One Do I Need?
| Connecting | Part |
|---|---|
| Juniper QFX to NVIDIA ConnectX, 100G, up to 3 m | JNP-MLNX-100G-DAC-3M-C — this listing |
| Juniper to Juniper, 100G, 3 m | JNP-100G-DAC-3M Juniper compatible 100G DAC, 3 m |
| Juniper to Juniper, 100G, 1 m | QFX-QSFP28-DAC-1M Juniper compatible 100G DAC, 1 m |
| Longer runs over fiber | JNP-QSFP-100G-SR4 Juniper compatible 100G SR4 or JNP-QSFP-100G-LR4 Juniper compatible 100G LR4 |
Technical Specifications
| Specification | Value |
|---|---|
| SKU | JNP-MLNX-100G-DAC-3M-C |
| Ends | QSFP28 to QSFP28 |
| Data rate | 100 Gb/s (4 x 25G NRZ) |
| Cable type | Passive twinax copper |
| Length | 3 m (9.8 ft) |
| Coding | End A: Juniper · End B: NVIDIA/Mellanox |
| Typical use | Juniper QFX5200-32C to ConnectX-5 / ConnectX-7 at 100G |
| Condition | New |
| Warranty | Lifetime, backed by Resilient Tec |
Source: Juniper Pathfinder hardware specifications for Juniper passive DACs (JNP-100G-DAC-3M, QFX-SFP-DAC-3M). Coding and end-to-end testing by Resilient Tec.
Good to Know
- Orientation matters. The Juniper-coded end goes in the Juniper switch. Ends are labeled.
- QSFP112 ports. Some ConnectX-7 adapters have QSFP112 cages, which accept QSFP28 cables at 100G. Confirm the port speed setting on the adapter.
- FEC must match. At 100G, both ends need the same FEC mode (usually RS-FEC). A mismatch is the most common cause of no link.
Quick Checklist — Is This the Right Cable?
You are linking a Juniper switch to an NVIDIA/Mellanox ConnectX adapter at 100G. The two ports are within 3 m. You want one cable that both ends accept without unsupported-optic warnings.
Availability
New, coded and tested · Ships from Resilient Tec in Knoxville, TN · Free standard shipping on US orders.
We confirm stock and lead time with you before an order ships. Need a different length, or different coding on each end? We build dual-coded cables to order. Request a quote →
Warranty: lifetime, backed by Resilient Tec — not a manufacturer term. When something fails you reach a named seller in the US, not a ticket queue.
You Might Also Need
- JNP-100G-DAC-3M Juniper compatible 100G DAC, 3 m — Juniper to Juniper
- JNP-QSFP-100G-SR4 Juniper compatible 100G SR4 — over multimode fiber
- NVIDIA/Mellanox compatible cables
Related Guides
Custom Dual-Coded DAC and AOC Builds from Resilient Tec